test: M3 E2E 烟囱脚本（T3-21 收官）

对 compose 六容器真实后端跑通社区全链路 14 场景，逐条取证 M3 四条验收标准：
① 发布后另一客户端 Feed 可见（FeedCard 字段/裁剪/AuthorSummary 逐项断言）
② 重复点赞不重复计数（3 次 PUT → likeCount 恰为 1，权威终态非 409）
③ 游标分页不丢不重（25 帖 + 双粒度全量翻页逐位比对）
④ 软删内容不再出现在公共 Feed（全量翻页 + 直读/互动面 404/40403）

另覆盖两步上传直传 MinIO 与预签名 GET 字节往返、无签名直访 403、收藏列表、
评论「仅作者可删」拍板语义、关注计数与 42204/自取关 no-op、草稿防枚举逐字节
一致、v3 社区埋点落库与字典边界、幂等键同/异 hash 与按作者隔离。

脚本与 M1/M2 版并列放仓库根目录（不进 test/，不被 flutter test 收集）；
token 与预签名 URL 全程脱敏。

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -0,0 +1,58 @@
+# Gitea Actions 门禁：与 docs/development/git-workflow.md 的本地门禁同一套命令。
+# 零外部 action / 零 GitHub 依赖（原因见 patbond-api 的 ci.yml 头注释）。
+# Flutter SDK 从中国镜像（flutter-io.cn）下载并缓存在 runner 的 toolcache 卷中，
+# 首跑约需下载 ~900MB，之后复用缓存秒级就绪。
+# 前提：runner config.yaml 的 container.options 挂载了 toolcache 卷：
+#   options: "-v /var/run/docker.sock:/var/run/docker.sock -v gitea_toolcache:/opt/hostedtoolcache"
+name: CI
+
+on:
+  push:
+    branches: [dev]
+  pull_request:
+
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  flutter-gates:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout (manual)
+        run: |
+          git init -q .
+          AUTH_URL=$(echo "${{ github.server_url }}" | sed "s#https://#https://oauth2:${{ github.token }}@#")
+          git remote add origin "$AUTH_URL/${{ github.repository }}.git"
+          git fetch -q --depth 1 origin "+${{ github.ref }}:refs/ci-head"
+          git checkout -q refs/ci-head
+      # 凭证防泄漏兜底（ADR-021）：与本地 pre-commit 同一脚本、同一规则表，
+      # 扫全部已跟踪文件（覆盖本次 push 变更的超集），纯 shell 零外部依赖。
+      - name: Secret scan
+        run: sh scripts/check-secrets.sh --all
+      - name: Install Flutter (flutter-io.cn mirror, toolcache reuse)
+        run: |
+          FLUTTER_VERSION=3.44.6
+          FLUTTER_HOME=/opt/hostedtoolcache/flutter-$FLUTTER_VERSION
+          if [ ! -x "$FLUTTER_HOME/bin/flutter" ]; then
+            echo "Downloading Flutter $FLUTTER_VERSION from flutter-io.cn ..."
+            curl -fsSL -o /tmp/flutter.tar.xz \
+              "https://storage.flutter-io.cn/flutter_infra_release/releases/stable/linux/flutter_linux_${FLUTTER_VERSION}-stable.tar.xz"
+            mkdir -p /opt/hostedtoolcache
+            tar -xf /tmp/flutter.tar.xz -C /tmp
+            mv /tmp/flutter "$FLUTTER_HOME"
+          else
+            echo "Reusing cached Flutter at $FLUTTER_HOME"
+          fi
+          git config --global --add safe.directory "$FLUTTER_HOME"
+          echo "$FLUTTER_HOME/bin" >> "$GITHUB_PATH"
+          echo "PUB_HOSTED_URL=https://pub.flutter-io.cn" >> "$GITHUB_ENV"
+          echo "FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn" >> "$GITHUB_ENV"
+      # 与本地门禁同一套命令（git-workflow.md）
+      - name: Gates
+        run: |
+          flutter --version
+          flutter pub get
+          dart format --output=none --set-exit-if-changed lib test
+          flutter analyze
+          flutter test

.gitignore

@@ -12,6 +12,10 @@
 .swiftpm/
 migrate_working_dir/
 
+# Keep Flutter application sources visible even if a global gitignore ignores lib/.
+!/lib/
+!/lib/**
+
 # IntelliJ related
 *.iml
 *.ipr

README.md

@@ -1,60 +1,38 @@
 # Patbond Flutter
 
-Patbond is a Flutter learning project. The current goal is to build the basic app frame for a social content app with a layout similar to Xiaohongshu.
+Patbond
 
-## Current Progress
+可运行在 Android、iOS、Web 和桌面平台。
 
-- Flutter project initialized.
-- App entry extracted into `lib/app/app.dart`.
-- Main shell page created with a bottom navigation bar.
-- Home page connected as the first tab.
-- Basic project notes added under `doc/`.
+## 功能
 
-## Project Structure
+- 社区动态搜索、点赞、收藏与评论
+- 模拟 AI 图片/视频创作和社区发布
+- 宠物资料、疫苗记录及健康档案管理
+- 医院、美容和个人服务搜索、筛选与模拟预约
+- 使用 `shared_preferences` 持久化宠物、疫苗和帖子数据
 
-```text
-lib/
-  main.dart
-  app/
-    app.dart
-  features/
-    home/
-      home_page.dart
-    main/
-      main_shell_page.dart
-doc/
-  android_development.md
-  common_app_structure.md
-  main_app_const.md
-  project_structure.md
-```
+AI 创作、预约、账号和部分菜单目前仍为本地演示交互。
 
-## Run The App
-
-Install dependencies:
+## 运行
 
 ```bash
+flutter clean
 flutter pub get
-```
-
-Run in debug mode:
-
-```bash
 flutter run
 ```
 
-Or open the project in VS Code, select a device, and press `F5`.
+Web 调试：
 
-## Development Plan
+```bash
+flutter run -d chrome
+```
 
-Near-term steps:
+## 验证
 
-1. Replace placeholder tabs with real feature pages.
-2. Build a basic home feed page.
-3. Add note card models and mock data.
-4. Add theme configuration.
-5. Add detail pages and navigation when the main frame is stable.
-
-## Git Notes
-
-Generated files such as `.dart_tool/`, `build/`, IDE workspace files, and local platform configuration should not be committed.
+```bash
+dart format --output=none --set-exit-if-changed lib test
+flutter analyze
+flutter test
+flutter build apk --debug
+```

android/app/src/main/AndroidManifest.xml

@@ -1,6 +1,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <uses-permission android:name="android.permission.INTERNET" />
     <application
-        android:label="patbond_flutter"
+        android:label="Patbond"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity

android/build.gradle.kts

@@ -1,5 +1,8 @@
 allprojects {
     repositories {
+        // Flutter Android engine artifacts. The mirror avoids very slow or
+        // interrupted downloads from storage.googleapis.com in China.
+        maven { url = uri("https://storage.flutter-io.cn/download.flutter.io") }
         maven { url = uri("https://maven.aliyun.com/repository/google") }
         maven { url = uri("https://maven.aliyun.com/repository/public") }
         google()

android/gradle.properties

@@ -1,7 +1,8 @@
-org.gradle.jvmargs=-Xmx8G -XX:MaxMetaspaceSize=4G -XX:ReservedCodeCacheSize=512m -XX:+HeapDumpOnOutOfMemoryError
+org.gradle.jvmargs=-Xmx2G -XX:MaxMetaspaceSize=1G -XX:ReservedCodeCacheSize=256m
+org.gradle.workers.max=2
 org.gradle.java.home=/usr/lib/jvm/java-17-openjdk
 org.gradle.caching=true
-org.gradle.parallel=true
+org.gradle.parallel=false
 android.useAndroidX=true
 # This newDsl flag was added by the Flutter template
 android.newDsl=false

integration_test/feed_live_test.dart

@@ -0,0 +1,112 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:patbond_flutter/app/app.dart';
+import 'package:patbond_flutter/core/widgets/post_card.dart';
+import 'package:patbond_flutter/features/auth/session_manager.dart';
+
+/// 内存 token 存储（桌面实测环境无 keyring；不落任何持久化）。
+class _InMemoryTokenStore implements TokenStore {
+  final Map<String, String> _values = {};
+
+  @override
+  Future<String?> read(String key) async => _values[key];
+
+  @override
+  Future<void> write(String key, String value) async => _values[key] = value;
+
+  @override
+  Future<void> delete(String key) async => _values.remove(key);
+}
+
+/// T3-14 compose 真链路桌面实测（默认跳过，不计入常规测试套件）：
+///
+/// ```bash
+/// # 先起后端六容器（patbond-api 仓库根）并用 scratch 种子脚本发帖，再：
+/// PATBOND_FEED_LIVE=1 flutter test integration_test/feed_live_test.dart -d linux
+/// ```
+///
+/// 驱动**真实 App**（Linux 桌面渲染管线 + 真实 HTTP + MinIO 预签名图片）：
+/// 注册账号 → UI 登录 → Feed 首屏真数据 → 滚动触底游标翻页到底 →
+/// 下拉刷新。会话存储注入内存实现（桌面环境无 keyring，不动生产配置）。
+void main() {
+  final binding = IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+  binding.framePolicy = LiveTestWidgetsFlutterBindingFramePolicy.fullyLive;
+
+  final enabled = Platform.environment['PATBOND_FEED_LIVE'] == '1';
+  const authBase = 'http://127.0.0.1:8081';
+
+  Future<void> pumpUntil(
+    WidgetTester tester,
+    Finder finder, {
+    Duration timeout = const Duration(seconds: 20),
+  }) async {
+    final deadline = DateTime.now().add(timeout);
+    while (DateTime.now().isBefore(deadline)) {
+      await tester.pump(const Duration(milliseconds: 250));
+      if (finder.evaluate().isNotEmpty) return;
+    }
+    fail('等待超时：$finder');
+  }
+
+  testWidgets('Feed 桌面真链路：登录 → 首屏 → 游标翻页到底 → 下拉刷新', (tester) async {
+    // ---- 注册一次性账号（随机凭据，不落持久化）----
+    final seed = DateTime.now().millisecondsSinceEpoch;
+    final username = 'feedlive$seed';
+    final password = 'Live1234!$seed';
+    final client = HttpClient();
+    final request = await client.postUrl(
+      Uri.parse('$authBase/api/v1/auth/register'),
+    );
+    request.headers.contentType = ContentType.json;
+    request.add(
+      utf8.encode(
+        jsonEncode({
+          'username': username,
+          'phone': '+86137${(seed % 100000000).toString().padLeft(8, '0')}',
+          'password': password,
+        }),
+      ),
+    );
+    final response = await request.close();
+    expect(response.statusCode, 200, reason: '注册测试账号失败');
+    client.close();
+
+    // ---- 启动真实 App（仅注入内存会话存储，其余全为生产实现）----
+    await tester.pumpWidget(
+      App(sessionManager: SessionManager(store: _InMemoryTokenStore())),
+    );
+    await pumpUntil(tester, find.text('登录'));
+
+    await tester.enterText(find.byType(TextField).at(0), username);
+    await tester.enterText(find.byType(TextField).at(1), password);
+    await tester.tap(find.text('登录'));
+
+    // ---- Feed 首屏：真实 getFeed + 卡片渲染 ----
+    await pumpUntil(tester, find.byType(PostCard));
+    expect(find.textContaining('compose 实测'), findsWidgets);
+
+    // ---- 触底翻页到「没有更多了」（26 帖 / 服务端页长 20 → 两页取齐）----
+    final list = find.byType(ListView).first;
+    for (var i = 0; i < 12; i++) {
+      await tester.fling(list, const Offset(0, -700), 1500);
+      await tester.pump(const Duration(milliseconds: 400));
+      if (find.text('没有更多了').evaluate().isNotEmpty) break;
+    }
+    await pumpUntil(tester, find.text('没有更多了'));
+    // 最早一帖（#1）在第二页尾部——游标翻页取齐的直接证据。
+    expect(find.textContaining('#1：'), findsOneWidget);
+
+    // ---- 回顶下拉刷新：整体替换后首屏仍在 ----
+    for (var i = 0; i < 12; i++) {
+      await tester.fling(list, const Offset(0, 700), 1500);
+      await tester.pump(const Duration(milliseconds: 200));
+    }
+    await tester.fling(list, const Offset(0, 400), 1000);
+    await pumpUntil(tester, find.byType(PostCard));
+    expect(find.textContaining('compose 实测'), findsWidgets);
+  }, skip: !enabled);
+}

integration_test/publish_live_test.dart

@@ -0,0 +1,193 @@
+import 'dart:convert';
+import 'dart:io';
+import 'dart:typed_data';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:patbond_flutter/app/app.dart';
+import 'package:patbond_flutter/core/widgets/post_card.dart';
+import 'package:patbond_flutter/features/auth/session_manager.dart';
+import 'package:patbond_flutter/features/community/media_compression.dart';
+import 'package:patbond_flutter/features/community/media_picking.dart';
+import 'package:patbond_flutter/features/community/media_uploader.dart';
+
+/// 内存 token 存储（桌面实测环境无 keyring；不落任何持久化）。
+class _InMemoryTokenStore implements TokenStore {
+  final Map<String, String> _values = {};
+
+  @override
+  Future<String?> read(String key) async => _values[key];
+
+  @override
+  Future<void> write(String key, String value) async => _values[key] = value;
+
+  @override
+  Future<void> delete(String key) async => _values.remove(key);
+}
+
+/// 1x1 真 PNG（70B）：桌面实测的「选中的照片」。
+final Uint8List _pngBytes = base64Decode(
+  'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAF'
+  'AAH/q842iQAAAABJRU5ErkJggg==',
+);
+
+/// 桌面选图替身：Linux 桌面无 image_picker 平台实现，实测注入字节。
+class _DesktopPicker implements MediaImagePicker {
+  @override
+  Future<List<PickedMediaImage>> pickImages({required int limit}) async => [
+    PickedMediaImage(bytes: _pngBytes, name: 'live.png'),
+  ];
+}
+
+/// 桌面压缩替身：Linux 桌面无 flutter_image_compress 原生实现，原样透传
+/// （mime 落 image/png，在服务端白名单内）。其余环节全为生产实现。
+class _PassthroughCompressor implements MediaImageCompressor {
+  @override
+  Future<CompressedMediaImage> compress(
+    PickedMediaImage source, {
+    required int quality,
+  }) async => CompressedMediaImage(bytes: source.bytes, mimeType: 'image/png');
+}
+
+/// T3-17 发布链路桌面真链路实测（默认跳过，不计入常规测试套件）：
+///
+/// ```bash
+/// # 先起后端六容器（patbond-api 仓库根：docker compose up -d --build），再：
+/// PATBOND_PUBLISH_LIVE=1 flutter test integration_test/publish_live_test.dart -d linux
+/// ```
+///
+/// 驱动**真实 App**（Linux 桌面渲染 + 真实 HTTP + MinIO 预签名直传）：
+/// 注册两个一次性账号 → A 登录 → 创作 Tab「发布动态」→ 输入正文 → 选图
+/// 上传（真 createUpload / 真预签名 PUT / 真 confirm）→ 发布（建草稿 →
+/// PATCH 迁移）→ 回首页 Feed 新帖置顶可见 → **另起一个全新 App 实例
+/// （新会话/新控制器/新 HTTP 客户端）以 B 账号登录，B 的 Feed 同样看到
+/// 该帖**（M3 验收「发布后可在另一客户端看到」取证）。
+///
+/// 桌面替身仅两处：选图与压缩（Linux 无这两个插件的平台实现）。
+/// 注意：桌面 `platform` 值为 `linux`，不在契约枚举内 → 埋点批次被服务端
+/// 400 整批拒绝（既有预期行为，见 analytics_service.dart 注释）；埋点落库
+/// 取证走 curl（26 号报告 §5c）。
+void main() {
+  final binding = IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+  binding.framePolicy = LiveTestWidgetsFlutterBindingFramePolicy.fullyLive;
+
+  final enabled = Platform.environment['PATBOND_PUBLISH_LIVE'] == '1';
+  const authBase = 'http://127.0.0.1:8081';
+
+  Future<void> pumpUntil(
+    WidgetTester tester,
+    Finder finder, {
+    Duration timeout = const Duration(seconds: 30),
+  }) async {
+    final deadline = DateTime.now().add(timeout);
+    while (DateTime.now().isBefore(deadline)) {
+      await tester.pump(const Duration(milliseconds: 250));
+      if (finder.evaluate().isNotEmpty) return;
+    }
+    fail('等待超时：$finder');
+  }
+
+  Future<void> register(String username, String password, int seed) async {
+    final client = HttpClient();
+    final request = await client.postUrl(
+      Uri.parse('$authBase/api/v1/auth/register'),
+    );
+    request.headers.contentType = ContentType.json;
+    request.add(
+      utf8.encode(
+        jsonEncode({
+          'username': username,
+          'phone': '+86137${(seed % 100000000).toString().padLeft(8, '0')}',
+          'password': password,
+        }),
+      ),
+    );
+    final response = await request.close();
+    expect(response.statusCode, 200, reason: '注册测试账号失败：$username');
+    client.close();
+  }
+
+  Future<void> login(
+    WidgetTester tester,
+    String username,
+    String password,
+  ) async {
+    await pumpUntil(tester, find.text('登录'));
+    await tester.enterText(find.byType(TextField).at(0), username);
+    await tester.enterText(find.byType(TextField).at(1), password);
+    await tester.tap(find.text('登录'));
+  }
+
+  testWidgets('发布桌面真链路：选图上传 → 发布 → Feed 置顶 → 第二账号可见', (tester) async {
+    final seed = DateTime.now().millisecondsSinceEpoch;
+    final authorName = 'publive$seed';
+    final readerName = 'pubread$seed';
+    const password = 'Live1234!publish';
+    final marker = '真链路发布 $seed';
+
+    await register(authorName, password, seed);
+    await register(readerName, password, seed + 1);
+
+    await tester.pumpWidget(
+      App(
+        sessionManager: SessionManager(store: _InMemoryTokenStore()),
+        mediaUploaderFactory: (repository, analytics) => MediaUploader(
+          repository: repository,
+          picker: _DesktopPicker(),
+          compressor: _PassthroughCompressor(),
+          analytics: analytics,
+        ),
+      ),
+    );
+
+    // ---- A 登录并发布（正文 + 一张真上传的图）----
+    await login(tester, authorName, password);
+    await pumpUntil(tester, find.text('创作'));
+    await tester.tap(find.text('创作'));
+    await pumpUntil(tester, find.text('发布动态'));
+    await tester.tap(find.text('发布动态'));
+    await pumpUntil(tester, find.widgetWithText(TextButton, '存草稿'));
+
+    await tester.enterText(find.byType(TextField).first, marker);
+    await tester.pump(const Duration(milliseconds: 300));
+    await tester.tap(find.byIcon(Icons.add_photo_alternate_outlined));
+    // 上传全程（createUpload → 预签名 PUT → confirm）走真实链路。
+    await pumpUntil(tester, find.byType(Image));
+    final publish = find.widgetWithText(FilledButton, '发布');
+    for (var i = 0; i < 120; i++) {
+      await tester.pump(const Duration(milliseconds: 250));
+      if (tester.widget<FilledButton>(publish).onPressed != null) break;
+    }
+    expect(
+      tester.widget<FilledButton>(publish).onPressed,
+      isNotNull,
+      reason: '图片未在 30s 内 ready，发布钮仍禁用',
+    );
+    await tester.tap(publish);
+
+    // ---- 回首页 Feed：新帖置顶可见 ----
+    await pumpUntil(tester, find.byType(PostCard));
+    await pumpUntil(tester, find.textContaining(marker));
+    final cards = tester.widgetList<PostCard>(find.byType(PostCard)).toList();
+    expect(cards.first.card.contentPreview, contains(marker));
+    expect(cards.first.card.mediaCount, 1);
+
+    // ---- 第二客户端（全新 App 实例 + 全新会话）：B 登录后同样看到该帖 ----
+    // 换 key 强制重建整棵树：新的 SessionManager / Controller / HTTP 客户端，
+    // 等价于另一台客户端首次登录（不是同一实例内的账号切换）。
+    await tester.pumpWidget(
+      App(
+        key: const ValueKey('client-b'),
+        sessionManager: SessionManager(store: _InMemoryTokenStore()),
+      ),
+    );
+    await login(tester, readerName, password);
+    await pumpUntil(tester, find.byType(PostCard));
+    await pumpUntil(tester, find.textContaining(marker));
+    final readerCards = tester
+        .widgetList<PostCard>(find.byType(PostCard))
+        .toList();
+    expect(readerCards.first.card.contentPreview, contains(marker));
+  }, skip: !enabled);
+}

lib/analytics/analytics_event_store.dart

@@ -0,0 +1,229 @@
+import 'dart:convert';
+
+import 'package:flutter/foundation.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+/// 13 号规范 §3.3 分段持久化事件队列（shared_preferences 版）。
+///
+/// 事件按段（每段最多 [segmentCapacity] 条）存储，避免单 key 整队列
+/// 重写的 O(n) 放大；总量超过 [maxEvents] 时丢最旧的整段。内存中的
+/// 段列表是唯一事实来源，shared_preferences 是尽力而为的镜像——
+/// 持久化不可用（如未初始化插件的测试环境）时降级为纯内存队列，
+/// 任何存取失败都不向调用方抛出。
+///
+/// at-least-once 语义：段只在上传拿到终态（202 受理 / 4xx 永久拒绝）
+/// 后由调用方删除；应用在响应前被杀，事件仍在本地，冷启动 [restore]
+/// 恢复后重发，服务端靠 eventId 幂等去重。
+class AnalyticsEventStore {
+  AnalyticsEventStore({this.maxEvents = 500, this.segmentCapacity = 20});
+
+  /// 段 ID 有序列表（旧 → 新），JSON 数组。
+  static const segIndexKey = 'pb.analytics.segIndex';
+
+  /// 单段序列化事件 JSON 数组，key 为前缀 + 段 ID。
+  static const segKeyPrefix = 'pb.analytics.seg.';
+
+  /// 本地累计丢弃计数（溢出淘汰 + 4xx 丢批 + 损坏段），诊断用。
+  static const droppedCountKey = 'pb.analytics.droppedCount';
+
+  final int maxEvents;
+  final int segmentCapacity;
+
+  SharedPreferences? _prefs;
+  final List<_Segment> _segments = [];
+  int _seq = 0;
+  int _droppedCount = 0;
+
+  int get length => _segments.fold(0, (sum, seg) => sum + seg.events.length);
+
+  int get droppedCount => _droppedCount;
+
+  /// 全部待上传事件快照（旧 → 新）。
+  List<Map<String, dynamic>> get events =>
+      List.unmodifiable([for (final seg in _segments) ...seg.events]);
+
+  /// 冷启动恢复：读回未上传段。损坏段（JSON 解析失败）删 key 丢弃、
+  /// 计入丢弃数，不崩溃；索引本身损坏则按 key 前缀清扫孤儿段后重建。
+  /// 恢复的事件排在本实例已入队事件之前（更旧优先上传/淘汰）。
+  Future<void> restore() async {
+    try {
+      _prefs = await SharedPreferences.getInstance();
+    } catch (error) {
+      debugPrint('Analytics store: prefs unavailable, memory-only: $error');
+      return;
+    }
+    final prefs = _prefs!;
+    _droppedCount = prefs.getInt(droppedCountKey) ?? 0;
+
+    final restored = <_Segment>[];
+    final rawIndex = prefs.getString(segIndexKey);
+    if (rawIndex != null) {
+      var ids = const <String>[];
+      try {
+        ids = [for (final id in jsonDecode(rawIndex) as List) id.toString()];
+      } catch (error) {
+        debugPrint('Analytics store: corrupted index, sweeping: $error');
+        final orphanKeys = prefs
+            .getKeys()
+            .where((key) => key.startsWith(segKeyPrefix))
+            .toList();
+        for (final key in orphanKeys) {
+          await _guard(() => prefs.remove(key));
+        }
+        _droppedCount += 1;
+      }
+      for (final id in ids) {
+        final raw = prefs.getString('$segKeyPrefix$id');
+        if (raw == null) continue;
+        try {
+          final events = [
+            for (final event in jsonDecode(raw) as List)
+              Map<String, dynamic>.from(event as Map),
+          ];
+          if (events.isNotEmpty) {
+            restored.add(_Segment(id, events, sealed: true));
+          }
+        } catch (error) {
+          debugPrint('Analytics store: dropping corrupted seg $id: $error');
+          await _guard(() => prefs.remove('$segKeyPrefix$id'));
+          _droppedCount += 1;
+        }
+      }
+    }
+
+    // restore 前入队的事件此前无处可写，恢复后连同清理过的索引一并落盘。
+    final preExisting = List<_Segment>.of(_segments);
+    _segments
+      ..clear()
+      ..addAll(restored)
+      ..addAll(preExisting);
+    await _evictOverflow();
+    for (final seg in preExisting.where(_segments.contains)) {
+      await _persistSegment(seg);
+    }
+    await _persistIndex();
+    await _persistDroppedCount();
+  }
+
+  /// 追加事件到当前开放段并持久化该段（重写 ≤ [segmentCapacity] 条）；
+  /// 段满即封段，下次写入开新段；超总量上限丢最旧整段。
+  Future<void> add(Map<String, dynamic> event) async {
+    var open = _segments.isEmpty ? null : _segments.last;
+    if (open == null || open.sealed || open.events.length >= segmentCapacity) {
+      open = _Segment(_newSegId(), []);
+      _segments.add(open);
+      await _persistIndex();
+    }
+    open.events.add(event);
+    if (open.events.length >= segmentCapacity) open.sealed = true;
+    await _persistSegment(open);
+    await _evictOverflow();
+  }
+
+  /// 从最旧段起取整段组一批（≤ [maxBatchEvents] 条）。入选段即封段，
+  /// 上传在途期间新事件只会写入新的开放段，批内容与对应段不再变化，
+  /// 上传成功后可安全整段删除（冲刷中新事件不丢）。
+  UploadBatch takeBatch(int maxBatchEvents) {
+    final selected = <_Segment>[];
+    var count = 0;
+    for (final seg in _segments) {
+      if (count + seg.events.length > maxBatchEvents) break;
+      selected.add(seg);
+      count += seg.events.length;
+    }
+    for (final seg in selected) {
+      seg.sealed = true;
+    }
+    return UploadBatch(
+      segmentIds: [for (final seg in selected) seg.id],
+      events: [
+        for (final seg in selected)
+          ...seg.events.map(Map<String, dynamic>.from),
+      ],
+    );
+  }
+
+  /// 上传终态后删段：202 受理或 4xx 永久拒绝（后者 [countAsDropped]
+  /// 计入丢弃诊断数）。段可能已被溢出淘汰，缺失即忽略。
+  Future<void> removeSegments(
+    List<String> ids, {
+    bool countAsDropped = false,
+  }) async {
+    final idSet = ids.toSet();
+    var removed = 0;
+    _segments.removeWhere((seg) {
+      if (!idSet.contains(seg.id)) return false;
+      removed += seg.events.length;
+      return true;
+    });
+    if (countAsDropped) _droppedCount += removed;
+    for (final id in ids) {
+      await _removeSegmentKey(id);
+    }
+    await _persistIndex();
+    if (countAsDropped) await _persistDroppedCount();
+  }
+
+  Future<void> _evictOverflow() async {
+    var indexDirty = false;
+    while (length > maxEvents && _segments.length > 1) {
+      final victim = _segments.removeAt(0);
+      _droppedCount += victim.events.length;
+      await _removeSegmentKey(victim.id);
+      indexDirty = true;
+    }
+    if (indexDirty) {
+      await _persistIndex();
+      await _persistDroppedCount();
+    }
+  }
+
+  Future<void> _persistIndex() => _guard(
+    () => _prefs?.setString(
+      segIndexKey,
+      jsonEncode([for (final seg in _segments) seg.id]),
+    ),
+  );
+
+  Future<void> _persistSegment(_Segment seg) => _guard(
+    () => _prefs?.setString('$segKeyPrefix${seg.id}', jsonEncode(seg.events)),
+  );
+
+  Future<void> _removeSegmentKey(String id) =>
+      _guard(() => _prefs?.remove('$segKeyPrefix$id'));
+
+  Future<void> _persistDroppedCount() =>
+      _guard(() => _prefs?.setInt(droppedCountKey, _droppedCount));
+
+  /// 持久化是尽力而为的镜像，失败只打日志，绝不影响内存队列。
+  Future<void> _guard(Future<void>? Function() write) async {
+    try {
+      await write();
+    } catch (error) {
+      debugPrint('Analytics store: persistence write failed: $error');
+    }
+  }
+
+  String _newSegId() =>
+      '${DateTime.now().microsecondsSinceEpoch.toRadixString(36)}-${_seq++}';
+}
+
+/// 一次上传的段快照：事件按旧 → 新排列，段 ID 用于成功后删段。
+class UploadBatch {
+  const UploadBatch({required this.segmentIds, required this.events});
+
+  final List<String> segmentIds;
+  final List<Map<String, dynamic>> events;
+
+  bool get isEmpty => events.isEmpty;
+}
+
+class _Segment {
+  _Segment(this.id, this.events, {this.sealed = false});
+
+  final String id;
+  final List<Map<String, dynamic>> events;
+
+  /// 封段后不再接受追加（满 20 条或已被取入上传批次）。
+  bool sealed;
+}

lib/analytics/analytics_page_name.dart

@@ -0,0 +1,39 @@
+/// page_viewed 的 pageName 编译期枚举（06 号报告 §5.2 字典 v2 + 03 号评估
+/// §3.2 Tab 映射）。禁止自由路由字符串；带参数路由必须归一化，任何
+/// UUID/ID 不得出现在 pageName 或 referrer 中（隐私红线第 5 条）。
+///
+/// 尚不存在的 M2 页面（petList/petDetail/petForm/recordForm/recordDetail）
+/// 先留枚举定义、不接线，待健康档案页面族落地时启用。
+enum AnalyticsPageName {
+  // —— 字典 v2 初始集合（06 §5.2 验收 2）——
+  login('login'),
+  register('register'),
+  home('home'),
+  profile('profile'),
+  petList('pet_list'),
+  petDetail('pet_detail'),
+  petForm('pet_form'),
+  recordForm('record_form'),
+  recordDetail('record_detail'),
+  // —— 客户端现存页面/Tab 补充（03 §3.2 Tab 映射，需数据侧同步进字典）——
+  create('create'),
+  petArchive('pet_archive'),
+  services('services'),
+  postDetail('post_detail'),
+  // —— 字典 v3 页面族（22 号报告 §2；本枚举登记 M3 已落地页）——
+  /// 发布页（P3，T3-17 push 全屏页）。
+  postForm('post_form');
+
+  const AnalyticsPageName(this.pageName);
+
+  /// 上报值，snake_case，与 RouteSettings.name 一致。
+  final String pageName;
+
+  static final Map<String, AnalyticsPageName> _byName = {
+    for (final page in values) page.pageName: page,
+  };
+
+  /// 路由名 → 枚举；不在枚举内返回 null（调用方不上报，06 §5.2 验收 4）。
+  static AnalyticsPageName? fromRouteName(String? name) =>
+      name == null ? null : _byName[name];
+}

lib/analytics/analytics_route_observer.dart

@@ -0,0 +1,49 @@
+import 'package:flutter/widgets.dart';
+import 'package:patbond_flutter/analytics/analytics_page_name.dart';
+import 'package:patbond_flutter/analytics/page_view_tracker.dart';
+
+/// 集中式 page_viewed 路由埋点（03 号评估 §3.2：NavigatorObserver 派生，
+/// 页面零侵入；06 号报告 §5.2 验收 1/4）。
+///
+/// 只统计 [PageRoute]（bottom sheet / dialog 是 PopupRoute，不计曝光）；
+/// 路由名不在 [AnalyticsPageName] 枚举内不上报（后端会整条 rejected，
+/// 不白白消耗队列）。didPop 补报「回退后重新曝光的前一页」；弹回到
+/// 无名根路由（认证状态机的 AnimatedSwitcher 宿主）时经 [resolveRootPage]
+/// 解析当前根部页面。
+class AnalyticsRouteObserver extends NavigatorObserver {
+  AnalyticsRouteObserver({required this.tracker, this.resolveRootPage});
+
+  final PageViewTracker tracker;
+
+  /// 根路由（无 RouteSettings.name）当前展示页的解析器，由 app.dart
+  /// 按认证状态与主壳当前 Tab 提供；返回 null 则不补报。
+  final AnalyticsPageName? Function()? resolveRootPage;
+
+  void _reportRoute(Route<dynamic>? route) {
+    if (route is! PageRoute) return;
+    final page = AnalyticsPageName.fromRouteName(route.settings.name);
+    if (page != null) tracker.report(page);
+  }
+
+  @override
+  void didPush(Route<dynamic> route, Route<dynamic>? previousRoute) {
+    _reportRoute(route);
+  }
+
+  @override
+  void didReplace({Route<dynamic>? newRoute, Route<dynamic>? oldRoute}) {
+    _reportRoute(newRoute);
+  }
+
+  @override
+  void didPop(Route<dynamic> route, Route<dynamic>? previousRoute) {
+    if (previousRoute is! PageRoute) return;
+    final page = AnalyticsPageName.fromRouteName(previousRoute.settings.name);
+    if (page != null) {
+      tracker.report(page);
+    } else if (previousRoute.isFirst) {
+      final rootPage = resolveRootPage?.call();
+      if (rootPage != null) tracker.report(rootPage);
+    }
+  }
+}

lib/analytics/analytics_service.dart

@@ -0,0 +1,296 @@
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+import 'package:flutter/foundation.dart';
+import 'package:patbond_flutter/analytics/analytics_event_store.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:uuid/uuid.dart';
+
+/// Analytics client for report 13: track events to backend POST
+/// /api/v1/events. Events land in a segmented persistent queue
+/// ([AnalyticsEventStore], shared_preferences, cap 500 oldest-dropped),
+/// flushed every 20 events, every [flushInterval] while foregrounded
+/// ([startPeriodicFlush]) and on leaving foreground; cold start [restore]
+/// re-uploads offline backlog. Upload failures back off exponentially
+/// (periodic flush only; explicit triggers unaffected). Privacy red-line
+/// enforced locally.
+class AnalyticsService {
+  AnalyticsService({
+    required this.apiBaseUrl,
+    required this.getAccessToken,
+    required this.getSessionId,
+    String? anonymousId,
+    AnalyticsEventStore? store,
+    this.flushInterval = const Duration(seconds: 30),
+    DateTime Function()? now,
+  }) : _anonymousId = anonymousId ?? const Uuid().v4(),
+       _anonymousIdInjected = anonymousId != null,
+       _appVersion = 'unknown',
+       _osVersion = _defaultOsVersion(),
+       _store = store ?? AnalyticsEventStore(),
+       _now = now ?? DateTime.now;
+
+  /// 异步设置 appVersion（app.dart 启动时从 package_info_plus 读取后注入）。
+  void setAppVersion(String version) {
+    _appVersion = version;
+  }
+
+  // 满 _flushThreshold 条触发一次冲刷（13 号规范 §3.4）。
+  static const _flushThreshold = 20;
+
+  // 契约单批上限（13 号规范 §1.1：单批 1–50 条），冲刷时按段拼批循环上传。
+  static const _maxBatchEvents = 50;
+
+  // 失败退避：首次 30 秒，×2 递增封顶 5 分钟（13 号 §3.4 / iteration-3
+  // 06 号 §2.3）；只挡定时冲刷，显式触发（flushNow / 满 20 / 冷启动）不受限。
+  static const _backoffInitial = Duration(seconds: 30);
+  static const _backoffCap = Duration(minutes: 5);
+
+  /// anonymousId 持久化 key（13 号规范 §3.3）：首次生成后跨冷启动稳定，
+  /// 登录前事件才能跨启动归并（A/B 前置 #4 硬依赖）。
+  static const anonymousIdKey = 'pb.analytics.anonymousId';
+
+  final String apiBaseUrl;
+  final String? Function()? getAccessToken;
+
+  /// 会话标识来源（SessionTracker 注入），冷启动/长后台换新由其管理。
+  final String Function() getSessionId;
+
+  /// 前台定时冲刷周期（13 号 §3.4 第 4 触发点），构造参数化便于测试注入。
+  final Duration flushInterval;
+
+  String _anonymousId;
+
+  /// 构造显式注入 anonymousId 的测试通道不参与持久化采用/落盘。
+  final bool _anonymousIdInjected;
+  String _appVersion;
+  final String _osVersion;
+  String? _userId;
+  bool _flushing = false;
+  final AnalyticsEventStore _store;
+
+  /// 时钟注入口（照 SessionTracker 先例），退避判定测试免真实等待。
+  final DateTime Function() _now;
+
+  Timer? _flushTimer;
+  Duration? _backoffDelay;
+  DateTime? _retryNotBefore;
+
+  /// 待上报事件（测试断言用，生产代码不得直接操作）。
+  @visibleForTesting
+  List<Map<String, dynamic>> get pendingEvents => _store.events;
+
+  /// 当前匿名标识（测试断言用）。
+  @visibleForTesting
+  String get anonymousId => _anonymousId;
+
+  /// 粗粒度 osVersion（13 号规范 §4.0：主版本级，如 android-14）。
+  /// Web 平台不支持 Platform.operatingSystemVersion，降级为 'web-unknown'。
+  static String _defaultOsVersion() {
+    if (kIsWeb) {
+      return 'web-unknown';
+    }
+    final major = RegExp(
+      r'\d+',
+    ).firstMatch(Platform.operatingSystemVersion)?.group(0);
+    return '${Platform.operatingSystem}-${major ?? 'unknown'}';
+  }
+
+  /// 平台标识。契约枚举为 android/ios；Web/桌面为开发调试形态，
+  /// 上报值不在枚举内会被服务端逐条 rejected（不影响客户端），属预期。
+  static String _platformName() {
+    if (kIsWeb) {
+      return 'web';
+    }
+    if (Platform.isAndroid) {
+      return 'android';
+    }
+    if (Platform.isIOS) {
+      return 'ios';
+    }
+    return Platform.operatingSystem;
+  }
+
+  /// Sets userId after login/restore.
+  void identify(String userId) {
+    _userId = userId;
+  }
+
+  /// Clears userId on logout (anonymousId remains).
+  void reset() {
+    _userId = null;
+  }
+
+  /// Tracks event (never throws, never awaits network). Props are validated
+  /// for privacy red-line patterns locally before queuing.
+  Future<void> trackEvent(
+    String eventName, [
+    Map<String, dynamic>? props,
+  ]) async {
+    try {
+      if (props != null && _containsForbiddenField(props)) {
+        debugPrint('Analytics: event $eventName rejected (forbidden field)');
+        return;
+      }
+
+      final event = {
+        'eventId': const Uuid().v7(),
+        'eventName': eventName,
+        'eventVersion': 1,
+        'anonymousId': _anonymousId,
+        if (_userId != null) 'userId': _userId,
+        'sessionId': getSessionId(),
+        'clientTs': DateTime.now().toUtc().toIso8601String(),
+        'appVersion': _appVersion,
+        'platform': _platformName(),
+        'osVersion': _osVersion,
+        if (props != null && props.isNotEmpty) 'props': props,
+      };
+
+      await _store.add(event);
+      if (_store.length >= _flushThreshold) {
+        await _flush();
+      }
+    } catch (error) {
+      debugPrint('Analytics track failed: $error');
+    }
+  }
+
+  /// 冷启动恢复：先采用持久化 anonymousId，再恢复持久化队列（离线积压
+  /// 约两周容量），有积压即冲刷一次（13 号规范 §3.4 冷启动触发）。
+  /// app 启动时调用，不阻塞渲染。
+  Future<void> restore() async {
+    try {
+      await _restoreAnonymousId();
+      await _store.restore();
+      if (_store.length > 0) {
+        await _flush();
+      }
+    } catch (error) {
+      debugPrint('Analytics restore failed: $error');
+    }
+  }
+
+  /// 采用/落盘持久化 anonymousId：已有存储值则采用（跨启动稳定），
+  /// 无则把本次生成的落盘。持久化不可用时降级为进程内临时 id，
+  /// 绝不抛出（埋点旁路原则）。
+  Future<void> _restoreAnonymousId() async {
+    if (_anonymousIdInjected) return;
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      final stored = prefs.getString(anonymousIdKey);
+      if (stored != null && stored.isNotEmpty) {
+        _anonymousId = stored;
+      } else {
+        await prefs.setString(anonymousIdKey, _anonymousId);
+      }
+    } catch (error) {
+      debugPrint('Analytics: anonymousId falls back to ephemeral: $error');
+    }
+  }
+
+  /// 启动前台定时冲刷（13 号 §3.4 第 4 触发点）：长前台会话（刷 Feed
+  /// 半小时不切页）不再积压不上传。app 启动与回前台时调用，幂等。
+  void startPeriodicFlush() {
+    _flushTimer ??= Timer.periodic(flushInterval, (_) => _onFlushTimerTick());
+  }
+
+  /// 停止定时冲刷（退后台与 App dispose 时调用），退避状态保留。
+  void stopPeriodicFlush() {
+    _flushTimer?.cancel();
+    _flushTimer = null;
+  }
+
+  void _onFlushTimerTick() {
+    // 退避窗口内跳过定时冲刷；显式触发（flushNow / 满 20 / 冷启动）不受限。
+    final notBefore = _retryNotBefore;
+    if (notBefore != null && _now().isBefore(notBefore)) return;
+    _flush();
+  }
+
+  /// 立即冲刷队列（退后台/会话切换时调用，避免低活跃用户凑不满
+  /// [_flushThreshold] 条导致事件永不上传）。
+  Future<void> flushNow() => _flush();
+
+  Future<void> _flush() async {
+    if (_flushing) return;
+    _flushing = true;
+
+    try {
+      while (true) {
+        // 取段拼批（入选段即封段，冲刷中的新事件写入新开放段不会丢）。
+        final batch = _store.takeBatch(_maxBatchEvents);
+        if (batch.isEmpty) break;
+        final rejected = await uploadBatch(batch.events);
+        // 拿到服务端应答即连通性恢复，重置退避。
+        _resetBackoff();
+        // at-least-once：拿到终态（202 受理 / 4xx 永久拒绝）才删段；
+        // 4xx 批次计入本地丢弃诊断数。
+        await _store.removeSegments(batch.segmentIds, countAsDropped: rejected);
+      }
+    } catch (error) {
+      // 网络错误 / 5xx：段保留在持久化队列，指数退避后由定时冲刷重试，
+      // 或等显式触发/冷启动重传。
+      _scheduleBackoff();
+      debugPrint('Analytics upload failed, events kept queued: $error');
+    } finally {
+      _flushing = false;
+    }
+  }
+
+  void _scheduleBackoff() {
+    final next = _backoffDelay == null ? _backoffInitial : _backoffDelay! * 2;
+    _backoffDelay = next > _backoffCap ? _backoffCap : next;
+    _retryNotBefore = _now().add(_backoffDelay!);
+  }
+
+  void _resetBackoff() {
+    _backoffDelay = null;
+    _retryNotBefore = null;
+  }
+
+  /// 上传一批事件。返回 true 表示 4xx 永久拒绝（调用方删段并计丢弃）；
+  /// 网络错误 / 5xx / 429 抛异常（调用方保留段并退避）。
+  /// protected：测试子类以假上传替换，免起真实 HttpServer。
+  @protected
+  @visibleForTesting
+  Future<bool> uploadBatch(List<Map<String, dynamic>> events) async {
+    final token = getAccessToken?.call();
+    final request =
+        await HttpClient().postUrl(Uri.parse('$apiBaseUrl/api/v1/events'))
+          ..headers.contentType = ContentType.json;
+    if (token != null) {
+      request.headers.add('Authorization', 'Bearer $token');
+    }
+    request.add(utf8.encode(jsonEncode({'events': events})));
+
+    final response = await request.close();
+    if (response.statusCode == 429) {
+      // 429 按网络错误同路径处理（保段 + 指数退避）：后端限流尚未实现
+      // （iteration-2/09 出入项），Retry-After 分支待其落地后一并做。
+      throw Exception('Upload rate limited (429), events kept queued');
+    }
+    if (response.statusCode >= 400 && response.statusCode < 500) {
+      // 4xx 为永久性拒绝（校验失败/批量超限等），重试不可能成功；
+      // 丢弃并打日志，避免毒丸批次无限重回队列阻塞后续事件。
+      debugPrint(
+        'Analytics batch permanently rejected '
+        '(${response.statusCode}), dropping ${events.length} events',
+      );
+      return true;
+    }
+    if (response.statusCode != 202) {
+      throw Exception('Upload failed with ${response.statusCode}');
+    }
+    return false;
+  }
+
+  bool _containsForbiddenField(Map<String, dynamic> props) {
+    // Dart RegExp 不支持 (?i) 内联标志（原写法构造即抛异常，事件被静默丢弃）。
+    final pattern = RegExp(
+      r'password|token|secret|phone|mobile|email|credential|idfa|gaid',
+      caseSensitive: false,
+    );
+    return props.keys.any((key) => pattern.hasMatch(key));
+  }
+}

lib/analytics/page_view_tracker.dart

@@ -0,0 +1,38 @@
+import 'package:patbond_flutter/analytics/analytics_page_name.dart';
+
+/// trackEvent 形状的回调（生产传 `AnalyticsService.trackEvent`，测试传录制桩）。
+typedef TrackEventFn =
+    Future<void> Function(String eventName, [Map<String, dynamic>? props]);
+
+/// page_viewed 上报的单一出口：维护 referrer 链与去重。
+///
+/// 路由事件（AnalyticsRouteObserver）、主壳 Tab 切换、认证状态机切页
+/// 三类曝光都经此上报，referrer（前一页 pageName）才能跨机制连贯；
+/// 栈底/冷启动首页 referrer 为 null（06 §5.2 验收 3）。
+class PageViewTracker {
+  PageViewTracker(this._track);
+
+  final TrackEventFn _track;
+
+  String? _lastPageName;
+  AnalyticsPageName? _currentTab;
+
+  /// 主壳当前 Tab（供回栈补报解析根路由曝光页）。
+  AnalyticsPageName? get currentTab => _currentTab;
+
+  /// 上报一次页面曝光；与上一条相同的页面去重（Tab 重复点选等）。
+  void report(AnalyticsPageName page) {
+    if (page.pageName == _lastPageName) return;
+    final referrer = _lastPageName;
+    _lastPageName = page.pageName;
+    final props = <String, dynamic>{'pageName': page.pageName};
+    if (referrer != null) props['referrer'] = referrer;
+    _track('page_viewed', props);
+  }
+
+  /// 主壳 Tab 曝光：记录当前 Tab 后上报（IndexedStack 无路由事件，手动补点）。
+  void reportTab(AnalyticsPageName page) {
+    _currentTab = page;
+    report(page);
+  }
+}

lib/analytics/session_tracker.dart

@@ -0,0 +1,61 @@
+import 'package:flutter/widgets.dart';
+import 'package:uuid/uuid.dart';
+
+/// sessionId 生命周期管理（13 号规范 §3.1、06 号报告 §5.1）。
+///
+/// 语义三条：冷启动生成新 sessionId；`paused → resumed` 间隔超过
+/// [timeout]（默认 30 分钟）生成新 sessionId；未超过则沿用原值。
+/// sessionId 不落任何持久化存储——会话本该跨冷启动失效（03 号评估 §3.1，
+/// 纯内存方案，lastActiveAt 不持久化）。
+///
+/// 注意生命周期级联：前台恢复时状态机会依次经过
+/// `paused → hidden → inactive → resumed`，因此只在**离开 resumed 的第一次
+/// 变更**记录退后台时刻，后续级联状态不得覆盖，否则间隔永远趋近于零。
+class SessionTracker with WidgetsBindingObserver {
+  SessionTracker({
+    this.timeout = const Duration(minutes: 30),
+    this.onLeaveForeground,
+    this.onEnterForeground,
+    DateTime Function()? now,
+  }) : _now = now ?? DateTime.now,
+       _sessionId = const Uuid().v7();
+
+  /// 后台超时阈值；构造参数化便于测试注入。
+  final Duration timeout;
+
+  /// 首次离开前台时回调（app 装配层用于触发埋点队列冲刷）。
+  final VoidCallback? onLeaveForeground;
+
+  /// 回到前台时回调（app 装配层用于恢复 30 秒定时冲刷）；
+  /// 冷启动首个 resumed 不触发（此前未离开过前台）。
+  final VoidCallback? onEnterForeground;
+
+  /// 时钟注入口，测试免真实等待。
+  final DateTime Function() _now;
+
+  String _sessionId;
+  DateTime? _leftForegroundAt;
+  AppLifecycleState _lastState = AppLifecycleState.resumed;
+
+  /// 当前会话标识（UUIDv7）。
+  String get sessionId => _sessionId;
+
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    if (state == AppLifecycleState.resumed) {
+      final leftAt = _leftForegroundAt;
+      if (leftAt != null) {
+        if (_now().difference(leftAt) > timeout) {
+          _sessionId = const Uuid().v7();
+        }
+        onEnterForeground?.call();
+      }
+      _leftForegroundAt = null;
+    } else if (_lastState == AppLifecycleState.resumed) {
+      // 首次离开前台才记时；inactive/hidden/paused 级联不覆盖。
+      _leftForegroundAt = _now();
+      onLeaveForeground?.call();
+    }
+    _lastState = state;
+  }
+}

lib/app/app.dart

@@ -1,16 +1,285 @@
-// import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+import 'package:patbond_flutter/analytics/analytics_page_name.dart';
+import 'package:patbond_flutter/analytics/analytics_route_observer.dart';
+import 'package:patbond_flutter/analytics/analytics_service.dart';
+import 'package:patbond_flutter/analytics/page_view_tracker.dart';
+import 'package:patbond_flutter/analytics/session_tracker.dart';
+import 'package:patbond_flutter/core/network/api_client.dart';
+import 'package:patbond_flutter/core/network/token_refresher.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/features/auth/auth_repository.dart';
+import 'package:patbond_flutter/features/auth/login_page.dart';
+import 'package:patbond_flutter/features/auth/session_manager.dart';
+import 'package:patbond_flutter/features/auth/splash_page.dart';
+import 'package:patbond_flutter/features/community/community_controller.dart';
+import 'package:patbond_flutter/features/community/community_interaction_analytics.dart';
+import 'package:patbond_flutter/features/community/community_repository.dart';
+import 'package:patbond_flutter/features/community/feed_analytics.dart';
+import 'package:patbond_flutter/features/community/media_uploader.dart';
+import 'package:patbond_flutter/features/community/post_analytics.dart';
 import 'package:patbond_flutter/features/main/main_shell_page.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/pet_analytics.dart';
+import 'package:patbond_flutter/features/pets/pets_controller.dart';
+import 'package:patbond_flutter/features/pets/pets_repository.dart';
+import 'package:patbond_flutter/state/app_state.dart';
 
-class App extends StatelessWidget{
-  const App({super.key});
+class App extends StatefulWidget {
+  const App({
+    super.key,
+    this.sessionManager,
+    this.authRepository,
+    this.petsRepository,
+    this.communityRepository,
+    this.mediaUploaderFactory,
+  });
+
+  /// 测试注入口；生产默认走安全存储 + 真实 API。
+  final SessionManager? sessionManager;
+  final AuthRepository? authRepository;
+  final PetsRepository? petsRepository;
+  final CommunityRepository? communityRepository;
+
+  /// 发布页媒体上传器构造口（桌面实测替换选图/压缩层；生产为 null）。
+  final MediaUploaderFactory? mediaUploaderFactory;
+
+  @override
+  State<App> createState() => _AppState();
+}
+
+class _AppState extends State<App> {
+  late final AppState appState;
+  late final SessionManager sessionManager;
+  late final AuthRepository authRepository;
+  late final PetsController petsController;
+  late final CommunityController communityController;
+  late final PetAnalytics petAnalytics;
+  late final HealthRecordAnalytics healthRecordAnalytics;
+  late final FeedAnalytics feedAnalytics;
+  late final CommunityInteractionAnalytics interactionAnalytics;
+  late final PostAnalytics postAnalytics;
+  late final SessionTracker _sessionTracker;
+  late final AnalyticsService _analytics;
+  late final PageViewTracker _pageViewTracker;
+  late final AnalyticsRouteObserver _routeObserver;
+  TokenRefresher? _sharedRefresher;
+
+  @override
+  void initState() {
+    super.initState();
+    appState = AppState()..load();
+    sessionManager =
+        widget.sessionManager ??
+        SessionManager(store: const SecureTokenStore());
+
+    _sessionTracker = SessionTracker(
+      onLeaveForeground: () {
+        // 退后台：停定时冲刷并立即冲刷一次（既有触发点保留）。
+        _analytics.stopPeriodicFlush();
+        _analytics.flushNow();
+      },
+      onEnterForeground: () => _analytics.startPeriodicFlush(),
+    );
+    WidgetsBinding.instance.addObserver(_sessionTracker);
+
+    _analytics = AnalyticsService(
+      apiBaseUrl: patbondUserApiBaseUrl,
+      getAccessToken: () => sessionManager.accessToken,
+      getSessionId: () => _sessionTracker.sessionId,
+    );
+    _initAppVersion();
+    // 冷启动恢复持久化埋点队列并冲刷离线积压（后台任务，不阻塞渲染）。
+    _analytics.restore();
+    // 前台期间 30 秒定时冲刷（13 号 §3.4 第 4 触发点）。
+    _analytics.startPeriodicFlush();
+
+    _pageViewTracker = PageViewTracker(_analytics.trackEvent);
+    _routeObserver = AnalyticsRouteObserver(
+      tracker: _pageViewTracker,
+      resolveRootPage: _resolveRootPage,
+    );
+
+    authRepository = widget.authRepository ?? _buildRepository();
+    petsController = PetsController(
+      repository: widget.petsRepository ?? _buildPetsRepository(),
+    );
+    // T3-14：Feed segment 接线主壳（数据层 T3-12 就位）；T3-16 起
+    // 点赞/收藏成功埋点经 interactionAnalytics 在 controller 内上报。
+    interactionAnalytics = CommunityInteractionAnalytics(_analytics.trackEvent);
+    communityController = CommunityController(
+      repository: widget.communityRepository ?? _buildCommunityRepository(),
+      interactionAnalytics: interactionAnalytics,
+    );
+    petAnalytics = PetAnalytics(_analytics.trackEvent);
+    healthRecordAnalytics = HealthRecordAnalytics(_analytics.trackEvent);
+    feedAnalytics = FeedAnalytics(_analytics.trackEvent);
+    // T3-17：发布漏斗五事件 + 媒体上传三段（发布页与 MediaUploader 消费）。
+    postAnalytics = PostAnalytics(_analytics.trackEvent);
+
+    // 认证状态切换补点（根路由 AnimatedSwitcher 无路由事件）
+    sessionManager.addListener(_reportAuthStateChange);
+  }
+
+  /// 异步读取 appVersion 并注入 analytics（启动后台任务，不阻塞渲染）。
+  Future<void> _initAppVersion() async {
+    try {
+      final info = await PackageInfo.fromPlatform();
+      _analytics.setAppVersion('${info.version}+${info.buildNumber}');
+    } catch (error) {
+      // 读取失败回退 'unknown'（AnalyticsService 构造默认值已兜底）。
+    }
+  }
+
+  /// 三服务分端口直连（ADR-002 无网关），token 刷新单飞经共享
+  /// [TokenRefresher]（22 号报告 §7 交接约定）。
+  TokenRefresher _ensureRefresher() {
+    return _sharedRefresher ??= TokenRefresher(
+      dio: buildPatbondDio(session: sessionManager),
+      session: sessionManager,
+    );
+  }
+
+  AuthRepository _buildRepository() {
+    final dio = buildPatbondDio(session: sessionManager);
+    final refresher = _ensureRefresher();
+    final api = ApiClient(
+      dio: dio,
+      session: sessionManager,
+      refresher: refresher,
+    );
+    return ApiAuthRepository(
+      api: api,
+      session: sessionManager,
+      refresher: refresher,
+      analytics: _analytics,
+    );
+  }
+
+  PetsRepository _buildPetsRepository() {
+    final dio = buildPatbondDio(
+      session: sessionManager,
+      baseUrl: patbondPetApiBaseUrl,
+    );
+    final api = ApiClient(
+      dio: dio,
+      session: sessionManager,
+      refresher: _ensureRefresher(),
+    );
+    return ApiPetsRepository(api: api);
+  }
+
+  /// community 服务分端口直连（:8084）；media 两步上传端点由 user 服务
+  /// （:8082 MediaController）提供，单独建 mediaApi 直连。token 刷新
+  /// 单飞经共享 [TokenRefresher]。
+  CommunityRepository _buildCommunityRepository() {
+    final dio = buildPatbondDio(
+      session: sessionManager,
+      baseUrl: patbondCommunityApiBaseUrl,
+    );
+    final api = ApiClient(
+      dio: dio,
+      session: sessionManager,
+      refresher: _ensureRefresher(),
+    );
+    final mediaDio = buildPatbondDio(
+      session: sessionManager,
+      baseUrl: patbondUserApiBaseUrl,
+    );
+    final mediaApi = ApiClient(
+      dio: mediaDio,
+      session: sessionManager,
+      refresher: _ensureRefresher(),
+    );
+    return ApiCommunityRepository(api: api, mediaApi: mediaApi);
+  }
+
+  AnalyticsPageName? _resolveRootPage() {
+    // 回栈到无名根路由时解析当前认证状态页/主壳 Tab
+    return switch (sessionManager.status) {
+      AuthStatus.unknown => null,
+      AuthStatus.unauthenticated => AnalyticsPageName.login,
+      AuthStatus.authenticated => _pageViewTracker.currentTab,
+    };
+  }
+
+  void _reportAuthStateChange() {
+    // 登出即清宠物档案与社区 Feed 内存副本（跨账号不泄漏；重登后重新拉取）。
+    if (sessionManager.status == AuthStatus.unauthenticated) {
+      petsController.reset();
+      communityController.reset();
+    }
+    // 认证状态机切页补点（03 §3.2 非路由曝光 1/2）
+    final page = switch (sessionManager.status) {
+      AuthStatus.unauthenticated => AnalyticsPageName.login,
+      AuthStatus.authenticated => _pageViewTracker.currentTab,
+      AuthStatus.unknown => null,
+    };
+    if (page != null) _pageViewTracker.report(page);
+  }
+
+  @override
+  void dispose() {
+    _analytics.stopPeriodicFlush();
+    sessionManager.removeListener(_reportAuthStateChange);
+    WidgetsBinding.instance.removeObserver(_sessionTracker);
+    appState.dispose();
+    petsController.dispose();
+    communityController.dispose();
+    if (widget.sessionManager == null) sessionManager.dispose();
+    super.dispose();
+  }
+
+  Widget _homeForStatus() {
+    switch (sessionManager.status) {
+      case AuthStatus.unknown:
+        return SplashPage(
+          key: const ValueKey('splash'),
+          authRepository: authRepository,
+          sessionManager: sessionManager,
+        );
+      case AuthStatus.unauthenticated:
+        return LoginPage(
+          key: const ValueKey('login'),
+          authRepository: authRepository,
+        );
+      case AuthStatus.authenticated:
+        return MainShellPage(
+          key: const ValueKey('shell'),
+          appState: appState,
+          petsController: petsController,
+          communityController: communityController,
+          currentUserId: sessionManager.userId,
+          petAnalytics: petAnalytics,
+          healthRecordAnalytics: healthRecordAnalytics,
+          feedAnalytics: feedAnalytics,
+          interactionAnalytics: interactionAnalytics,
+          postAnalytics: postAnalytics,
+          mediaUploaderFactory: widget.mediaUploaderFactory,
+          pageViewTracker: _pageViewTracker,
+          onLogout: authRepository.logout,
+        );
+    }
+  }
 
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
       title: 'Patbond',
       debugShowCheckedModeBanner: false,
-      home: const MainShellPage(),
+      theme: buildAppTheme(),
+      navigatorObservers: [_routeObserver],
+      home: ListenableBuilder(
+        listenable: sessionManager,
+        builder: (context, _) {
+          // 认证状态切换统一 300ms 淡入淡出（Splash ↔ 登录 ↔ 主壳，
+          // BrandMark 同构保证品牌区过渡对位，组装稿 §7）。
+          return AnimatedSwitcher(
+            duration: const Duration(milliseconds: 300),
+            child: _homeForStatus(),
+          );
+        },
+      ),
     );
   }
 }

lib/core/models/cursor_page.dart

@@ -0,0 +1,27 @@
+/// cursor 分页正典信封 `{items, nextCursor, hasMore}`（pets 域体重 / 健康事件，
+/// community 域 Feed / 我的帖子 / 评论 / 收藏共用；自 pet_models.dart 上移至 core）。
+class CursorPage<T> {
+  const CursorPage({
+    required this.items,
+    required this.nextCursor,
+    required this.hasMore,
+  });
+
+  factory CursorPage.fromJson(
+    Map<String, dynamic> json,
+    T Function(Map<String, dynamic>) itemFromJson,
+  ) {
+    return CursorPage(
+      items: (json['items'] as List)
+          .map((item) => itemFromJson(item as Map<String, dynamic>))
+          .toList(),
+      // 不透明 base64url 游标，客户端不得解析；hasMore=false 时恒为 null。
+      nextCursor: json['nextCursor'] as String?,
+      hasMore: json['hasMore'] as bool,
+    );
+  }
+
+  final List<T> items;
+  final String? nextCursor;
+  final bool hasMore;
+}

lib/core/navigation/fade_route.dart

@@ -0,0 +1,17 @@
+import 'package:flutter/material.dart';
+
+/// 统一页面切换：300ms 淡入淡出（12 号组装稿 §7 流程约束）。
+///
+/// [settings] 从 M2 起必传路由名（page_viewed 取数来源，03 号评估 §2.1），
+/// 名字用 `AnalyticsPageName` 枚举的 pageName 值。
+Route<T> fadePageRoute<T>(Widget page, {RouteSettings? settings}) {
+  return PageRouteBuilder<T>(
+    settings: settings,
+    transitionDuration: const Duration(milliseconds: 300),
+    reverseTransitionDuration: const Duration(milliseconds: 300),
+    pageBuilder: (context, animation, secondaryAnimation) => page,
+    transitionsBuilder: (context, animation, secondaryAnimation, child) {
+      return FadeTransition(opacity: animation, child: child);
+    },
+  );
+}

lib/core/network/api_client.dart

@@ -0,0 +1,177 @@
+import 'package:dio/dio.dart';
+import 'package:patbond_flutter/core/network/api_envelope.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/network/token_refresher.dart';
+import 'package:patbond_flutter/features/auth/session_manager.dart';
+
+/// API 基地址：`--dart-define=PATBOND_API_BASE_URL=...` 注入，默认本机后端。
+const String patbondApiBaseUrl = String.fromEnvironment(
+  'PATBOND_API_BASE_URL',
+  defaultValue: 'http://127.0.0.1:8081',
+);
+
+/// user 服务基地址（/api/v1/me、/api/v1/events）：MVP 阶段 auth 与 user
+/// 分端口直连（ADR-002 无网关），`--dart-define=PATBOND_USER_API_BASE_URL=...` 注入。
+const String patbondUserApiBaseUrl = String.fromEnvironment(
+  'PATBOND_USER_API_BASE_URL',
+  defaultValue: 'http://127.0.0.1:8082',
+);
+
+/// pet 服务基地址（/api/v1/pets、/api/v1/breeds、/api/v1/vaccine-catalog 等
+/// pets 域 12 路径）：沿用 auth :8081 / user :8082 的分端口直连模式，
+/// `--dart-define=PATBOND_PET_API_BASE_URL=...` 注入。
+const String patbondPetApiBaseUrl = String.fromEnvironment(
+  'PATBOND_PET_API_BASE_URL',
+  defaultValue: 'http://127.0.0.1:8083',
+);
+
+/// community 服务基地址（/api/v1/posts、/api/v1/feed、/api/v1/media 等
+/// community/media 域 13 路径）：沿用分端口直连模式，
+/// `--dart-define=PATBOND_COMMUNITY_API_BASE_URL=...` 注入。
+const String patbondCommunityApiBaseUrl = String.fromEnvironment(
+  'PATBOND_COMMUNITY_API_BASE_URL',
+  defaultValue: 'http://127.0.0.1:8084',
+);
+
+/// 构建全局共用的 Dio 实例。
+///
+/// `validateStatus` 放行所有状态码：错误信封由 [ApiClient] 统一解析成
+/// 类型化异常，不依赖 dio 的 4xx/5xx 抛错路径。
+Dio buildPatbondDio({required SessionManager session, String? baseUrl}) {
+  final dio = Dio(
+    BaseOptions(
+      baseUrl: baseUrl ?? patbondApiBaseUrl,
+      connectTimeout: const Duration(seconds: 5),
+      sendTimeout: const Duration(seconds: 10),
+      receiveTimeout: const Duration(seconds: 10),
+      contentType: Headers.jsonContentType,
+      validateStatus: (_) => true,
+    ),
+  );
+  dio.interceptors.add(AuthInterceptor(session));
+  return dio;
+}
+
+/// 鉴权拦截器：对标记 [ApiClient.requiresAuthExtra] 的请求附加
+/// `Authorization: Bearer`，并统一携带设备标识。
+class AuthInterceptor extends Interceptor {
+  AuthInterceptor(this._session);
+
+  final SessionManager _session;
+
+  @override
+  void onRequest(RequestOptions options, RequestInterceptorHandler handler) {
+    final deviceId = _session.deviceId;
+    if (deviceId != null) {
+      options.headers['X-Device-Id'] = deviceId;
+    }
+    if (options.extra[ApiClient.requiresAuthExtra] == true) {
+      final token = _session.accessToken;
+      if (token != null) {
+        options.headers['Authorization'] = 'Bearer $token';
+      }
+    }
+    handler.next(options);
+  }
+}
+
+/// HTTP 客户端封装：错误信封 → 类型化异常，401/40101 → 刷新后重放一次。
+class ApiClient {
+  ApiClient({
+    required this._dio,
+    required this._session,
+    required this._refresher,
+  });
+
+  /// RequestOptions.extra 标记：该请求需要 Bearer 鉴权。
+  static const requiresAuthExtra = 'patbond.requiresAuth';
+
+  final Dio _dio;
+  final SessionManager _session;
+  final TokenRefresher _refresher;
+
+  /// 发起请求并返回信封中的 `data`。
+  ///
+  /// 鉴权请求遇 HTTP 401 或 code 40101 时：经单飞刷新后原样重放一次；
+  /// 重放仍失败则清会话并抛 [SessionExpiredException]。
+  Future<Object?> request(
+    String path, {
+    String method = 'POST',
+    Object? body,
+    Map<String, Object?>? query,
+    Map<String, Object?>? headers,
+    bool requiresAuth = false,
+  }) async {
+    var response = await _send(
+      path,
+      method: method,
+      body: body,
+      query: query,
+      headers: headers,
+      requiresAuth: requiresAuth,
+    );
+
+    if (requiresAuth && _isAuthFailure(response)) {
+      await _refresher.refresh();
+      response = await _send(
+        path,
+        method: method,
+        body: body,
+        query: query,
+        headers: headers,
+        requiresAuth: requiresAuth,
+      );
+      if (_isAuthFailure(response)) {
+        await _session.clearSession();
+        throw const SessionExpiredException('刷新后重放仍未通过鉴权');
+      }
+    }
+
+    return _unwrap(response);
+  }
+
+  Future<Response<Object?>> _send(
+    String path, {
+    required String method,
+    required bool requiresAuth,
+    Object? body,
+    Map<String, Object?>? query,
+    Map<String, Object?>? headers,
+  }) async {
+    try {
+      return await _dio.request<Object?>(
+        path,
+        data: body,
+        queryParameters: query,
+        options: Options(
+          method: method,
+          headers: headers,
+          extra: {requiresAuthExtra: requiresAuth},
+        ),
+      );
+    } on DioException catch (error) {
+      throw ApiNetworkException('请求失败：${error.type.name}');
+    }
+  }
+
+  bool _isAuthFailure(Response<Object?> response) {
+    if (response.statusCode == 401) return true;
+    return ApiEnvelope.tryParse(response.data)?.code ==
+        ApiCodes.accessTokenInvalid;
+  }
+
+  Object? _unwrap(Response<Object?> response) {
+    final status = response.statusCode ?? 0;
+    if (status == 429) {
+      throw const ApiRateLimitException();
+    }
+    final envelope = ApiEnvelope.tryParse(response.data);
+    if (envelope == null || status >= 500) {
+      throw ApiNetworkException('响应异常：HTTP $status');
+    }
+    if (envelope.code == ApiCodes.ok) {
+      return envelope.data;
+    }
+    throw ApiBusinessException(code: envelope.code, message: envelope.message);
+  }
+}

lib/core/network/api_envelope.dart

@@ -0,0 +1,20 @@
+/// 服务端统一响应信封 `{code, message, data}` 的解析结果。
+class ApiEnvelope {
+  const ApiEnvelope({required this.code, required this.message, this.data});
+
+  final int code;
+  final String message;
+  final Object? data;
+
+  /// 从响应体解析信封；结构不符（非 JSON 对象 / 无 int code）返回 null。
+  static ApiEnvelope? tryParse(Object? body) {
+    if (body is! Map) return null;
+    final code = body['code'];
+    if (code is! int) return null;
+    return ApiEnvelope(
+      code: code,
+      message: body['message'] is String ? body['message'] as String : '',
+      data: body['data'],
+    );
+  }
+}

lib/core/network/api_exception.dart

@@ -0,0 +1,119 @@
+/// 服务端错误信封 `{code, message, data}` 的业务码常量（接口契约冻结稿）。
+abstract final class ApiCodes {
+  static const ok = 0;
+
+  /// 参数错误。
+  static const paramError = 40000;
+
+  /// 用户名或密码错误。
+  static const badCredentials = 40100;
+
+  /// access token 无效或过期。
+  static const accessTokenInvalid = 40101;
+
+  /// refresh token 已失效。
+  static const refreshTokenInvalid = 40102;
+
+  /// 用户名重复。
+  static const usernameTaken = 40900;
+
+  /// 手机号重复。
+  static const phoneTaken = 40901;
+
+  /// 登录失败次数过多，账号临时锁定（HTTP 423，见 openapi.yaml）。
+  static const loginLocked = 42300;
+
+  // ------ pets 域（契约 v1.2.0 冻结，M2 第二波定型 8 个）------
+
+  /// 对可见宠物无相应操作权限（viewer 写记录、caregiver/viewer 改档案）。
+  static const petAccessDenied = 40300;
+
+  /// 宠物不存在 / 已软删 / 与调用者无关系（防枚举，三种情况响应一致）。
+  static const petNotFound = 40401;
+
+  /// 记录不存在或记录所属宠物对调用者不可见（记录级防枚举）。
+  static const recordNotFound = 40402;
+
+  /// 乐观锁版本冲突（提交的 version 已过期；提醒的条件更新守卫落空同码）。
+  static const versionConflict = 40902;
+
+  /// 芯片号已被登记（跨用户唯一）。
+  static const microchipTaken = 40903;
+
+  /// 同宠物同疫苗同系列同剂次的非 cancelled 疫苗记录已存在。
+  static const vaccinationDoseExists = 40904;
+
+  /// 疫苗状态机 / 状态-日期规则违反（HTTP 422）。
+  static const vaccinationRuleViolation = 42201;
+
+  /// 提醒状态机 / completed-completedAt 一致性违反（HTTP 422）。
+  static const careReminderRuleViolation = 42202;
+
+  // ------ community / media 域（契约 v1.3.0 冻结，M3 第二波定型 9 个）------
+
+  /// 对可见帖子/评论无相应操作权限（改删他人已发布帖、删他人可见评论）。
+  static const postAccessDenied = 40301;
+
+  /// 帖子不存在 / 已软删 / hidden/archived（含作者）/ 他人 draft
+  /// （防枚举，全部情况响应一致；互动路径上含作者本人草稿）。
+  static const postNotFound = 40403;
+
+  /// 评论不存在、已删或所属帖子不可见（防枚举合并）。
+  static const commentNotFound = 40404;
+
+  /// media asset 不存在、非本人所有或已删（防枚举合并）。
+  static const mediaNotFound = 40405;
+
+  /// 目标用户不存在或已注销（合并不泄露成因）。
+  static const communityUserNotFound = 40406;
+
+  /// 同 Idempotency-Key 不同 payload（规范化 request_hash 不符）。
+  static const idempotencyKeyMismatch = 40905;
+
+  /// 引用了本人所有但非 ready（uploading/failed）状态的 asset（HTTP 422）。
+  static const mediaNotReady = 42203;
+
+  /// 自关注（仅 PUT；自取关走 DELETE 的 200 幂等 no-op）。
+  static const selfFollow = 42204;
+
+  /// 上传状态不允许确认（非 uploading 态或对象校验未通过，HTTP 422）。
+  static const mediaUploadStateInvalid = 42205;
+}
+
+/// API 调用的类型化异常。页面按类型映射为三层错误呈现
+/// （字段级 / 表单横幅 / SnackBar，见 12 号组装稿 §4），
+/// 服务端原始 message 一律不直接透出给用户。
+sealed class ApiException implements Exception {
+  const ApiException(this.message);
+
+  /// 服务端返回的原始 message（仅用于日志排查，不上屏）。
+  final String message;
+
+  @override
+  String toString() => '$runtimeType: $message';
+}
+
+/// 系统错误：超时、断网、5xx、响应无法解析。归瞬态层（SnackBar + 重试）。
+final class ApiNetworkException extends ApiException {
+  const ApiNetworkException([super.message = '网络或服务不可用']);
+}
+
+/// 业务错误：错误信封 code != 0（40000/40100/40900/40901 等）。
+/// 领域层可按错误码细分子类型（见 features/pets/pet_exceptions.dart）。
+class ApiBusinessException extends ApiException {
+  const ApiBusinessException({required this.code, required String message})
+    : super(message);
+
+  final int code;
+}
+
+/// 限流（HTTP 429）：映射为横幅「尝试次数过多，请稍后再试」。
+final class ApiRateLimitException extends ApiException {
+  const ApiRateLimitException([super.message = '请求过于频繁']);
+}
+
+/// 会话已失效：refresh token 失效（40102）或刷新重放后仍 401。
+/// 抛出前本地会话已被清除，应用会自动回到登录页。
+final class SessionExpiredException extends ApiException {
+  const SessionExpiredException([super.message = '会话已失效']);
+}

lib/core/network/signed_network_image.dart

@@ -0,0 +1,67 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter/painting.dart';
+
+/// 预签名 URL 的图片内存缓存 key：剥离 SigV4 签名参数（`X-Amz-*`，
+/// 大小写不敏感），保留其余 query。
+///
+/// 媒体 URL 每次响应现签（TTL 1 小时），同一对象两次响应的完整 URL
+/// 必然不同；若按完整 URL 作缓存 key，同图会反复未命中、重复下载。
+/// 对象路径唯一标识 MinIO 对象，剥签名后即稳定 key。
+String presignedImageCacheKey(String url) {
+  final uri = Uri.tryParse(url);
+  if (uri == null || uri.queryParameters.isEmpty) return url;
+  final kept = <String, String>{};
+  var stripped = false;
+  uri.queryParameters.forEach((key, value) {
+    if (key.toLowerCase().startsWith('x-amz-')) {
+      stripped = true;
+    } else {
+      kept[key] = value;
+    }
+  });
+  if (!stripped) return url;
+  // Uri.replace 的 null 语义是「保留原值」，全剥空时手工截断 query。
+  if (kept.isEmpty) return url.substring(0, url.indexOf('?'));
+  return uri.replace(queryParameters: kept).toString();
+}
+
+/// 以剥签名 key 判等的网络图 provider：同对象的不同签名 URL 命中同一
+/// [ImageCache] 条目；未命中时仍以完整签名 URL 发起请求（委托
+/// [NetworkImage] 加载，其为 factory-only 接口，无法直接继承）。
+class SignedNetworkImage extends ImageProvider<SignedNetworkImage> {
+  SignedNetworkImage(this.url, {this.scale = 1.0})
+    : cacheKey = presignedImageCacheKey(url);
+
+  final String url;
+  final double scale;
+
+  /// 剥离签名参数后的稳定缓存 key。
+  final String cacheKey;
+
+  @override
+  Future<SignedNetworkImage> obtainKey(ImageConfiguration configuration) =>
+      SynchronousFuture<SignedNetworkImage>(this);
+
+  @override
+  ImageStreamCompleter loadImage(
+    SignedNetworkImage key,
+    ImageDecoderCallback decode,
+  ) {
+    final delegate = NetworkImage(key.url, scale: key.scale);
+    return delegate.loadImage(delegate, decode);
+  }
+
+  @override
+  bool operator ==(Object other) {
+    if (other.runtimeType != runtimeType) return false;
+    return other is SignedNetworkImage &&
+        other.cacheKey == cacheKey &&
+        other.scale == scale;
+  }
+
+  @override
+  int get hashCode => Object.hash(cacheKey, scale);
+
+  @override
+  String toString() => 'SignedNetworkImage("$url", cacheKey: "$cacheKey")';
+}

lib/core/network/token_refresher.dart

@@ -0,0 +1,66 @@
+import 'package:dio/dio.dart';
+import 'package:patbond_flutter/core/network/api_envelope.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/features/auth/auth_models.dart';
+import 'package:patbond_flutter/features/auth/session_manager.dart';
+
+/// 单飞（single-flight）token 刷新器。
+///
+/// 并发触发的多个 401/40101 只发出一次 `POST /auth/refresh`，
+/// 其余调用共享同一个进行中的刷新结果。
+///
+/// 清会话纪律（12 号组装稿 §7）：只有服务端明确判定 refresh 失效
+/// （40102 或 HTTP 401）才清除本地会话；网络失败、5xx 一律保留 token。
+class TokenRefresher {
+  TokenRefresher({required this._dio, required this._session});
+
+  final Dio _dio;
+  final SessionManager _session;
+
+  Future<void>? _inflight;
+
+  /// 刷新并轮换 token。成功后新 token 已写入 [SessionManager]。
+  ///
+  /// 抛出 [SessionExpiredException]（会话已被清除）或
+  /// [ApiNetworkException]（token 保留，可重试）。
+  Future<void> refresh() {
+    return _inflight ??= _doRefresh().whenComplete(() => _inflight = null);
+  }
+
+  Future<void> _doRefresh() async {
+    await _session.loadFromStorage();
+    final refreshToken = _session.refreshToken;
+    if (refreshToken == null) {
+      await _session.clearSession();
+      throw const SessionExpiredException('本地无 refresh token');
+    }
+
+    final Response<Object?> response;
+    try {
+      response = await _dio.post<Object?>(
+        '/api/v1/auth/refresh',
+        data: {'refreshToken': refreshToken},
+      );
+    } on DioException catch (error) {
+      throw ApiNetworkException('刷新请求失败：${error.type.name}');
+    }
+
+    final envelope = ApiEnvelope.tryParse(response.data);
+    if (response.statusCode == 401 ||
+        envelope?.code == ApiCodes.refreshTokenInvalid) {
+      await _session.clearSession();
+      throw const SessionExpiredException('refresh token 已失效');
+    }
+    if (envelope != null &&
+        envelope.code == ApiCodes.ok &&
+        envelope.data is Map<String, dynamic>) {
+      await _session.updateTokens(
+        AuthTokens.fromJson(envelope.data! as Map<String, dynamic>),
+      );
+      return;
+    }
+    throw ApiNetworkException(
+      '刷新响应异常：HTTP ${response.statusCode}，code ${envelope?.code}',
+    );
+  }
+}

lib/core/theme/app_theme.dart

@@ -0,0 +1,196 @@
+import 'package:flutter/material.dart';
+
+/// 语义色 token（ADR-005：以 AI宠物_iOS_UI设计稿.html 珊瑚橙暖色系为品牌正典，
+/// 详见 iteration-1-reports/04-ui-login-design-spec.md §1.1）。
+abstract final class AppColors {
+  /// 品牌珊瑚橙：图标、装饰、渐变起点；不用于承载文字的实心填充（对比度不足）。
+  static const primary = Color(0xFFFF6F4C);
+
+  /// 加深珊瑚：实心按钮填充、可点击文字链接（白字约 4.5:1，WCAG AA）。
+  static const primaryStrong = Color(0xFFD6431A);
+
+  /// 浅色底上的强调文字、按钮反白替代。
+  static const primaryDark = Color(0xFF7A2E12);
+
+  /// amber：渐变终点、徽章、会员/促销 CTA。
+  static const accent = Color(0xFFFFB648);
+
+  /// amber 底上的文字。
+  static const accentDark = Color(0xFF7A4B0A);
+
+  /// 页面背景（奶油底）。
+  static const canvas = Color(0xFFFFF7ED);
+
+  /// 卡片、输入框背景。
+  static const surface = Color(0xFFFFFFFF);
+
+  /// peach：图标底、占位块、选中指示。
+  static const surfaceTint = Color(0xFFFFE8D6);
+
+  /// 主文字。
+  static const ink = Color(0xFF3E2A1F);
+
+  /// 承载信息的次级文字（日期、元数据、字段名；正典 feed-caption 色，
+  /// 白底 6.59:1 达 AA）。muted 仅限占位符、禁用态、纯装饰（05 号规范 DEBT-2）。
+  static const inkSoft = Color(0xFF6B5A4A);
+
+  /// 次级文字、占位符。
+  static const muted = Color(0xFF9C8977);
+
+  /// 描边、分隔线。
+  static const border = Color(0xFFF0DCC8);
+
+  /// sage：成功提示的图标/描边。
+  static const success = Color(0xFF7FA88A);
+
+  /// 成功提示底上的文字。
+  static const successInk = Color(0xFF3F5744);
+
+  /// 成功提示底色。
+  static const successSurface = Color(0xFFE8F0E8);
+
+  static const warning = Color(0xFFF59E0B);
+
+  /// 校验错误文字、错误描边、失败提示（白底上约 5.4:1，AA 达标）。
+  static const error = Color(0xFFD0342C);
+
+  /// error 淡底（8% tint）上的文字（error 本身在自家淡底仅 4.44:1 贴线不过；
+  /// 与 primary→primaryStrong 同构加深，05 号规范 §2/D8）。
+  static const errorDark = Color(0xFFB02C25);
+
+  /// 品牌渐变：hero 区、头像环、装饰性大面积（不承载正文文字）。
+  static const brandGradient = LinearGradient(
+    begin: Alignment.topLeft,
+    end: Alignment.bottomRight,
+    colors: [primary, accent],
+  );
+}
+
+/// 圆角 token（设计规范 §1.3）。
+abstract final class AppRadius {
+  /// 小按钮、内嵌 CTA、错误横幅。
+  static const sm = 12.0;
+
+  /// 主按钮、SnackBar、菜单组。
+  static const md = 16.0;
+
+  /// 输入框、feed 卡。
+  static const lg = 18.0;
+
+  /// 大卡片。
+  static const xl = 24.0;
+
+  /// 芯片、徽章。
+  static const pill = 999.0;
+}
+
+ThemeData buildAppTheme() {
+  final scheme = ColorScheme.fromSeed(
+    seedColor: AppColors.primary,
+    brightness: Brightness.light,
+    surface: AppColors.surface,
+  ).copyWith(error: AppColors.error, onError: Colors.white);
+
+  return ThemeData(
+    useMaterial3: true,
+    colorScheme: scheme,
+    scaffoldBackgroundColor: AppColors.canvas,
+    fontFamilyFallback: const [
+      'Noto Sans CJK SC',
+      'Noto Sans SC',
+      'PingFang SC',
+      'Microsoft YaHei',
+      'sans-serif',
+    ],
+    textTheme: const TextTheme(
+      headlineSmall: TextStyle(
+        color: AppColors.ink,
+        fontSize: 22,
+        fontWeight: FontWeight.w800,
+      ),
+      titleLarge: TextStyle(
+        color: AppColors.ink,
+        fontSize: 18,
+        fontWeight: FontWeight.w800,
+      ),
+      titleMedium: TextStyle(
+        color: AppColors.ink,
+        fontSize: 15,
+        fontWeight: FontWeight.w700,
+      ),
+      bodyMedium: TextStyle(color: AppColors.ink, fontSize: 14, height: 1.5),
+      bodySmall: TextStyle(color: AppColors.muted, fontSize: 12, height: 1.4),
+    ),
+    cardTheme: const CardThemeData(
+      color: AppColors.surface,
+      elevation: 0,
+      margin: EdgeInsets.zero,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.all(Radius.circular(AppRadius.xl)),
+        side: BorderSide(color: AppColors.border),
+      ),
+    ),
+    filledButtonTheme: FilledButtonThemeData(
+      style: FilledButton.styleFrom(
+        backgroundColor: AppColors.primaryStrong,
+        foregroundColor: Colors.white,
+        disabledBackgroundColor: AppColors.ink.withAlpha(31),
+        disabledForegroundColor: AppColors.ink.withAlpha(97),
+        minimumSize: const Size(64, 52),
+        shape: const RoundedRectangleBorder(
+          borderRadius: BorderRadius.all(Radius.circular(AppRadius.md)),
+        ),
+        textStyle: const TextStyle(fontSize: 15, fontWeight: FontWeight.w700),
+      ),
+    ),
+    inputDecorationTheme: const InputDecorationTheme(
+      filled: true,
+      fillColor: AppColors.surface,
+      contentPadding: EdgeInsets.symmetric(horizontal: 16, vertical: 14),
+      border: OutlineInputBorder(
+        borderRadius: BorderRadius.all(Radius.circular(AppRadius.lg)),
+        borderSide: BorderSide(color: AppColors.border),
+      ),
+      enabledBorder: OutlineInputBorder(
+        borderRadius: BorderRadius.all(Radius.circular(AppRadius.lg)),
+        borderSide: BorderSide(color: AppColors.border),
+      ),
+      focusedBorder: OutlineInputBorder(
+        borderRadius: BorderRadius.all(Radius.circular(AppRadius.lg)),
+        borderSide: BorderSide(color: AppColors.primary, width: 1.5),
+      ),
+      errorBorder: OutlineInputBorder(
+        borderRadius: BorderRadius.all(Radius.circular(AppRadius.lg)),
+        borderSide: BorderSide(color: AppColors.error, width: 1.5),
+      ),
+      focusedErrorBorder: OutlineInputBorder(
+        borderRadius: BorderRadius.all(Radius.circular(AppRadius.lg)),
+        borderSide: BorderSide(color: AppColors.error, width: 1.5),
+      ),
+      errorStyle: TextStyle(color: AppColors.error, fontSize: 12),
+      helperStyle: TextStyle(color: AppColors.muted, fontSize: 12),
+    ),
+    snackBarTheme: const SnackBarThemeData(
+      behavior: SnackBarBehavior.floating,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.all(Radius.circular(AppRadius.md)),
+      ),
+    ),
+    navigationBarTheme: NavigationBarThemeData(
+      backgroundColor: AppColors.surface,
+      indicatorColor: AppColors.surfaceTint,
+      height: 72,
+      labelTextStyle: WidgetStateProperty.resolveWith((states) {
+        return TextStyle(
+          fontSize: 11,
+          fontWeight: states.contains(WidgetState.selected)
+              ? FontWeight.w700
+              : FontWeight.w500,
+          color: states.contains(WidgetState.selected)
+              ? AppColors.primaryStrong
+              : AppColors.muted,
+        );
+      }),
+    ),
+  );
+}

lib/core/widgets/app_text_field.dart

@@ -0,0 +1,94 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+
+/// 表单输入框封装（设计规范 §2.2 / §4.1）。
+///
+/// 密码模式（[obscurable] 为 true）内置可见性切换按钮，点击目标 ≥44×44。
+/// 提交中禁用时整体 60% 不透明度。
+class AppTextField extends StatefulWidget {
+  const AppTextField({
+    required this.label,
+    super.key,
+    this.controller,
+    this.prefixIcon,
+    this.prefixText,
+    this.errorText,
+    this.helperText,
+    this.enabled = true,
+    this.obscurable = false,
+    this.keyboardType,
+    this.textInputAction,
+    this.autofillHints,
+    this.onChanged,
+    this.onSubmitted,
+  });
+
+  final String label;
+  final TextEditingController? controller;
+  final IconData? prefixIcon;
+
+  /// 固定前缀文本（如手机号的 '+86 '），仅展示与拼接语义，不进输入值。
+  final String? prefixText;
+
+  final String? errorText;
+  final String? helperText;
+  final bool enabled;
+
+  /// 是否为密码模式：默认遮蔽输入，并显示可见性切换按钮。
+  final bool obscurable;
+
+  final TextInputType? keyboardType;
+  final TextInputAction? textInputAction;
+  final Iterable<String>? autofillHints;
+  final ValueChanged<String>? onChanged;
+  final ValueChanged<String>? onSubmitted;
+
+  @override
+  State<AppTextField> createState() => _AppTextFieldState();
+}
+
+class _AppTextFieldState extends State<AppTextField> {
+  bool obscured = true;
+
+  @override
+  Widget build(BuildContext context) {
+    return Opacity(
+      opacity: widget.enabled ? 1 : 0.6,
+      child: TextFormField(
+        controller: widget.controller,
+        enabled: widget.enabled,
+        obscureText: widget.obscurable && obscured,
+        keyboardType: widget.keyboardType,
+        textInputAction: widget.textInputAction,
+        autofillHints: widget.autofillHints,
+        onChanged: widget.onChanged,
+        onFieldSubmitted: widget.onSubmitted,
+        decoration: InputDecoration(
+          labelText: widget.label,
+          errorText: widget.errorText,
+          helperText: widget.helperText,
+          prefixText: widget.prefixText,
+          prefixIcon: widget.prefixIcon == null
+              ? null
+              : Icon(widget.prefixIcon, color: AppColors.muted),
+          suffixIcon: widget.obscurable
+              ? IconButton(
+                  tooltip: obscured ? '显示密码' : '隐藏密码',
+                  constraints: const BoxConstraints(
+                    minWidth: 44,
+                    minHeight: 44,
+                  ),
+                  onPressed: widget.enabled
+                      ? () => setState(() => obscured = !obscured)
+                      : null,
+                  icon: Icon(
+                    obscured ? Icons.visibility_off : Icons.visibility,
+                    color: AppColors.muted,
+                  ),
+                )
+              : null,
+        ),
+      ),
+    );
+  }
+}

lib/core/widgets/auth_scaffold.dart

@@ -0,0 +1,32 @@
+import 'package:flutter/material.dart';
+
+/// 认证页统一框架：SafeArea + 滚动 + 水平 padding 24 + 键盘避让（设计规范 §6.2）。
+///
+/// 登录 / 注册 / 找回密码共用。[appBar] 供注册页传入透明返回栏；
+/// 键盘弹出时内容可滚动，防止溢出。
+class AuthScaffold extends StatelessWidget {
+  const AuthScaffold({required this.child, super.key, this.appBar});
+
+  final Widget child;
+  final PreferredSizeWidget? appBar;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: appBar,
+      body: SafeArea(
+        child: LayoutBuilder(
+          builder: (context, constraints) {
+            return SingleChildScrollView(
+              padding: const EdgeInsets.symmetric(horizontal: 24),
+              child: ConstrainedBox(
+                constraints: BoxConstraints(minHeight: constraints.maxHeight),
+                child: child,
+              ),
+            );
+          },
+        ),
+      ),
+    );
+  }
+}

lib/core/widgets/brand_mark.dart

@@ -0,0 +1,50 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+
+/// 品牌区：logo + 字标 + slogan（设计规范 §2.2 / §5.2）。
+///
+/// Splash 与登录页共用，保证两处渲染一致，是淡入过渡成立的前提。
+class BrandMark extends StatelessWidget {
+  const BrandMark({super.key, this.size = 72, this.slogan = '和毛孩子在一起的每一天'});
+
+  /// logo 图形边长。
+  final double size;
+
+  /// 传 null 时不渲染 slogan 行。
+  final String? slogan;
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Container(
+          width: size,
+          height: size,
+          decoration: const BoxDecoration(
+            gradient: AppColors.brandGradient,
+            borderRadius: BorderRadius.all(Radius.circular(AppRadius.xl)),
+          ),
+          child: Icon(Icons.pets, size: size * 0.5, color: Colors.white),
+        ),
+        const SizedBox(height: 12),
+        const Text(
+          'Patbond',
+          style: TextStyle(
+            color: AppColors.primary,
+            fontSize: 32,
+            fontWeight: FontWeight.w700,
+          ),
+        ),
+        if (slogan != null) ...[
+          const SizedBox(height: 4),
+          Text(
+            slogan!,
+            textAlign: TextAlign.center,
+            style: const TextStyle(color: AppColors.muted, fontSize: 14),
+          ),
+        ],
+      ],
+    );
+  }
+}

lib/core/widgets/comment_tile.dart

@@ -0,0 +1,141 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/pet_avatar.dart';
+import 'package:patbond_flutter/features/community/community_display.dart';
+import 'package:patbond_flutter/features/community/community_models.dart';
+
+/// 评论条目（05 号规范 §3.4，demo 气泡形态升共享）：
+/// `PetAvatar sm32` + 10 + 气泡（`surface` 底、`border` 1px、圆角 16、
+/// padding 12）——作者名 13/w700 → 4 → 内容 bodyMedium → 6 → 底行
+/// （时间 11 `inkSoft` + 仅本人评论的「删除」入口）。
+///
+/// - @ 回复（单层平铺，契约 replyToUser）以「回复 @昵称：」前缀呈现；
+///   降级作者统一「宠友」占位（isDegraded 一个判定口）。
+/// - [onDelete] 非 null 才渲染删除入口——**权限判定在调用方**（17 号
+///   后端语义：仅评论作者可删，他人可见评论 403/40301）；[deleting]
+///   期间入口替换为 14 转圈防重复提交。
+/// - 评论点赞（§3.4 底行右端）无契约端点，M3 不渲染。
+class CommentTile extends StatelessWidget {
+  const CommentTile({
+    required this.comment,
+    super.key,
+    this.onDelete,
+    this.deleting = false,
+    this.now,
+  });
+
+  final PostComment comment;
+
+  /// 删除回调；null = 非本人评论，不渲染删除入口。
+  final VoidCallback? onDelete;
+
+  /// 删除请求在途（入口转圈锁定）。
+  final bool deleting;
+
+  /// 相对时间的参考时钟（测试注入；缺省取当前时间）。
+  final DateTime? now;
+
+  @override
+  Widget build(BuildContext context) {
+    final replyTo = comment.replyToUser;
+    return Row(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        PetAvatar(size: PetAvatarSize.sm, url: comment.author.avatarUrl),
+        const SizedBox(width: 10),
+        Expanded(
+          child: Container(
+            padding: const EdgeInsets.all(12),
+            decoration: BoxDecoration(
+              color: AppColors.surface,
+              border: Border.all(color: AppColors.border),
+              borderRadius: BorderRadius.circular(16),
+            ),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  authorDisplayName(comment.author),
+                  style: const TextStyle(
+                    color: AppColors.ink,
+                    fontSize: 13,
+                    fontWeight: FontWeight.w700,
+                  ),
+                ),
+                const SizedBox(height: 4),
+                Text.rich(
+                  TextSpan(
+                    children: [
+                      if (replyTo != null)
+                        TextSpan(
+                          text: '回复 @${authorDisplayName(replyTo)}：',
+                          style: const TextStyle(
+                            color: AppColors.inkSoft,
+                            fontWeight: FontWeight.w600,
+                          ),
+                        ),
+                      TextSpan(text: comment.content),
+                    ],
+                  ),
+                  style: Theme.of(context).textTheme.bodyMedium,
+                ),
+                const SizedBox(height: 6),
+                Row(
+                  children: [
+                    Text(
+                      feedRelativeTime(comment.createdAt, now: now),
+                      style: const TextStyle(
+                        color: AppColors.inkSoft,
+                        fontSize: 11,
+                      ),
+                    ),
+                    const Spacer(),
+                    if (onDelete != null)
+                      deleting
+                          ? const Padding(
+                              padding: EdgeInsets.all(4),
+                              child: SizedBox(
+                                width: 14,
+                                height: 14,
+                                child: CircularProgressIndicator(
+                                  strokeWidth: 2,
+                                  color: AppColors.inkSoft,
+                                ),
+                              ),
+                            )
+                          : Semantics(
+                              label: '删除评论',
+                              button: true,
+                              child: InkWell(
+                                onTap: onDelete,
+                                borderRadius: BorderRadius.circular(
+                                  AppRadius.pill,
+                                ),
+                                // 视觉 11 字，触控由 padding 撑到 ≥32
+                                //（气泡内行高受限，不足 44 以热区扩展补偿）。
+                                child: const Padding(
+                                  padding: EdgeInsets.symmetric(
+                                    horizontal: 10,
+                                    vertical: 8,
+                                  ),
+                                  child: Text(
+                                    '删除',
+                                    style: TextStyle(
+                                      color: AppColors.inkSoft,
+                                      fontSize: 11,
+                                      fontWeight: FontWeight.w600,
+                                    ),
+                                  ),
+                                ),
+                              ),
+                            ),
+                  ],
+                ),
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+}

lib/core/widgets/empty_state_illustration.dart

@@ -0,0 +1,78 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+
+/// 空态插画区（05 号规范 §3.4）：承载引导动作的空态，向上兼容现有
+/// `EmptyState`（42 图标 + 一行 bodySmall 的纯提示版继续留用）。
+///
+/// 布局：112 圆形插画区（`surfaceTint` 底 + 56 `primary` 图标，大面积
+/// 装饰用法）→ 标题 → 说明（12 `inkSoft` ≤2 行居中）→ 可选 CTA。
+/// v1 插画用 Material 图标，正式素材待品牌侧供给后原位替换。
+class EmptyStateIllustration extends StatelessWidget {
+  const EmptyStateIllustration({
+    required this.icon,
+    required this.title,
+    super.key,
+    this.description,
+    this.ctaLabel,
+    this.onCtaPressed,
+  });
+
+  final IconData icon;
+  final String title;
+  final String? description;
+
+  /// CTA 文案；null 则不渲染按钮（如筛选后空态）。
+  final String? ctaLabel;
+  final VoidCallback? onCtaPressed;
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 48, horizontal: 16),
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Container(
+            width: 112,
+            height: 112,
+            decoration: const BoxDecoration(
+              shape: BoxShape.circle,
+              color: AppColors.surfaceTint,
+            ),
+            child: Icon(icon, size: 56, color: AppColors.primary),
+          ),
+          const SizedBox(height: 16),
+          Text(
+            title,
+            style: Theme.of(context).textTheme.titleMedium,
+            textAlign: TextAlign.center,
+          ),
+          if (description != null) ...[
+            const SizedBox(height: 8),
+            Text(
+              description!,
+              maxLines: 2,
+              overflow: TextOverflow.ellipsis,
+              textAlign: TextAlign.center,
+              style: const TextStyle(
+                color: AppColors.inkSoft,
+                fontSize: 12,
+                height: 1.4,
+              ),
+            ),
+          ],
+          if (ctaLabel != null) ...[
+            const SizedBox(height: 24),
+            FilledButton(
+              style: FilledButton.styleFrom(
+                padding: const EdgeInsets.symmetric(horizontal: 24),
+              ),
+              onPressed: onCtaPressed,
+              child: Text(ctaLabel!),
+            ),
+          ],
+        ],
+      ),
+    );
+  }
+}

lib/core/widgets/feed_skeleton.dart

@@ -0,0 +1,125 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+
+/// Feed 骨架屏单元（05 号规范 §3.7）：模拟单图卡——头部行（32 圆 +
+/// 两条横条）→ 4:3 通栏块 → 两条正文横条。块色 `surfaceTint`
+/// （1.18:1，装饰性占位不受对比度约束）。
+///
+/// 动效：整体不透明度 0.6 ↔ 1.0 呼吸循环 1200ms；系统「减弱动态效果」
+/// 开启时静止在 1.0。首载用法为连排 3 张（P1/P4）。
+class FeedSkeleton extends StatefulWidget {
+  const FeedSkeleton({super.key});
+
+  @override
+  State<FeedSkeleton> createState() => _FeedSkeletonState();
+}
+
+class _FeedSkeletonState extends State<FeedSkeleton>
+    with SingleTickerProviderStateMixin {
+  late final AnimationController _controller;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      vsync: this,
+      duration: const Duration(milliseconds: 1200),
+      lowerBound: 0.6,
+      value: 1,
+    );
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final reduceMotion = MediaQuery.of(context).disableAnimations;
+    if (reduceMotion) {
+      _controller.stop();
+      _controller.value = 1;
+    } else if (!_controller.isAnimating) {
+      _controller.repeat(reverse: true);
+    }
+    return FadeTransition(
+      opacity: _controller,
+      child: Card(
+        clipBehavior: Clip.antiAlias,
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Padding(
+              padding: const EdgeInsets.all(14),
+              child: Row(
+                children: [
+                  const _SkeletonBlock(width: 32, height: 32, circle: true),
+                  const SizedBox(width: 10),
+                  Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      _SkeletonBlock(
+                        width: _relative(context, 0.40),
+                        height: 12,
+                      ),
+                      const SizedBox(height: 6),
+                      _SkeletonBlock(
+                        width: _relative(context, 0.24),
+                        height: 8,
+                      ),
+                    ],
+                  ),
+                ],
+              ),
+            ),
+            const AspectRatio(
+              aspectRatio: 4 / 3,
+              child: ColoredBox(color: AppColors.surfaceTint),
+            ),
+            Padding(
+              padding: const EdgeInsets.all(14),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  _SkeletonBlock(width: _relative(context, 0.90), height: 12),
+                  const SizedBox(height: 8),
+                  _SkeletonBlock(width: _relative(context, 0.60), height: 12),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  /// 横条宽度按屏宽比例取（规范 40%/24%/90%/60%），免依赖父约束测量。
+  double _relative(BuildContext context, double fraction) =>
+      MediaQuery.of(context).size.width * fraction;
+}
+
+class _SkeletonBlock extends StatelessWidget {
+  const _SkeletonBlock({
+    required this.width,
+    required this.height,
+    this.circle = false,
+  });
+
+  final double width;
+  final double height;
+  final bool circle;
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: width,
+      height: height,
+      decoration: BoxDecoration(
+        color: AppColors.surfaceTint,
+        borderRadius: BorderRadius.circular(circle ? width / 2 : 6),
+      ),
+    );
+  }
+}

lib/core/widgets/inline_error_banner.dart

@@ -0,0 +1,41 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+
+/// 表单级错误横幅（设计规范 §4.2）。
+///
+/// 用于无法归属单一字段的业务错误（如 401「用户名或密码错误」），
+/// 停留在表单上下文里供用户对照修改，不用 SnackBar。
+class InlineErrorBanner extends StatelessWidget {
+  const InlineErrorBanner({required this.message, super.key});
+
+  final String message;
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: double.infinity,
+      padding: const EdgeInsets.all(12),
+      decoration: BoxDecoration(
+        color: AppColors.error.withAlpha(20),
+        borderRadius: const BorderRadius.all(Radius.circular(AppRadius.sm)),
+      ),
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          const Icon(Icons.error_outline, size: 18, color: AppColors.error),
+          const SizedBox(width: 8),
+          Expanded(
+            child: Text(
+              message,
+              style: const TextStyle(
+                color: AppColors.error,
+                fontSize: 13,
+                height: 1.4,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/core/widgets/like_button.dart

@@ -0,0 +1,203 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+
+/// 点赞 / 收藏按钮语义变体（05 号规范 §3.5：同一组件，图标与语义色
+/// 参数化）。点赞激活 = `error` 图标 + `errorDark` 计数（demo 的
+/// `Colors.red` 3.13:1 修订弃用，D6）；收藏激活 = `accentDark` 同色。
+enum LikeButtonVariant {
+  like(
+    inactiveIcon: Icons.favorite_border,
+    activeIcon: Icons.favorite,
+    activeIconColor: AppColors.error,
+    activeCountColor: AppColors.errorDark,
+  ),
+  bookmark(
+    inactiveIcon: Icons.bookmark_border,
+    activeIcon: Icons.bookmark,
+    activeIconColor: AppColors.accentDark,
+    activeCountColor: AppColors.accentDark,
+  );
+
+  const LikeButtonVariant({
+    required this.inactiveIcon,
+    required this.activeIcon,
+    required this.activeIconColor,
+    required this.activeCountColor,
+  });
+
+  final IconData inactiveIcon;
+  final IconData activeIcon;
+  final Color activeIconColor;
+  final Color activeCountColor;
+}
+
+/// 点赞/收藏交互钮（05 号规范 §3.5）：图标 20 + 计数 13/w600，未激活
+/// 一律 `inkSoft`（6.59:1）。触控 44×44 由 padding 撑足。
+///
+/// 乐观更新视觉（§3.5/§4 三层闪烁抑制的 UI 半边，状态本体由持有方经
+/// ToggleSync 驱动）：
+///
+/// - **点按驱动**的状态变化：激活播 240ms 弹性缩放（1→1.25→1）+ 图标
+///   120ms 淡入；取消仅 120ms 颜色渐出、无缩放。
+/// - **非点按驱动**的状态变化（失败回滚 / 服务端对账）：零动画直接跳变；
+///   若激活动画未播完，等播完再跳（避免动画中途反转的抖动，§4.3a）。
+/// - 计数变化一律直接替换，不做滚动动画（回滚时无二次滚动）。
+/// - 系统「减弱动态效果」开启时全部降级为瞬变。
+///
+/// [onPressed] 传 null 即纯展示禁用态（仍按正常色渲染计数与状态）。
+class LikeButton extends StatefulWidget {
+  const LikeButton({
+    required this.variant,
+    required this.active,
+    required this.count,
+    super.key,
+    this.onPressed,
+    this.semanticLabel,
+  });
+
+  final LikeButtonVariant variant;
+  final bool active;
+  final int count;
+  final VoidCallback? onPressed;
+  final String? semanticLabel;
+
+  @override
+  State<LikeButton> createState() => _LikeButtonState();
+}
+
+class _LikeButtonState extends State<LikeButton>
+    with SingleTickerProviderStateMixin {
+  late final AnimationController _scaleController = AnimationController(
+    vsync: this,
+    duration: const Duration(milliseconds: 240),
+  );
+  late final Animation<double> _scale = TweenSequence<double>([
+    TweenSequenceItem(
+      tween: Tween<double>(
+        begin: 1,
+        end: 1.25,
+      ).chain(CurveTween(curve: Curves.easeOut)),
+      weight: 40,
+    ),
+    TweenSequenceItem(
+      tween: Tween<double>(
+        begin: 1.25,
+        end: 1,
+      ).chain(CurveTween(curve: Curves.easeOutBack)),
+      weight: 60,
+    ),
+  ]).animate(_scaleController);
+
+  /// 当前展示态（回滚等待动画播完期间可短暂落后于 widget.active）。
+  late bool _displayActive = widget.active;
+
+  /// 展示计数与状态成对更新（§4.3c：回滚不出现「心已灭计数未减」中间帧）。
+  late int _displayCount = widget.count;
+
+  /// 最近一次点按的期望目标态；didUpdateWidget 以此区分「点按驱动」
+  /// （播动画）与「回滚/对账」（零动画跳变）。
+  bool? _expectedTarget;
+
+  /// 图标切换是否走 120ms 淡入淡出（点按驱动）；回滚跳变置 false。
+  bool _fadeSwap = false;
+
+  bool get _reduceMotion =>
+      MediaQuery.maybeOf(context)?.disableAnimations ?? false;
+
+  @override
+  void didUpdateWidget(LikeButton oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.active == widget.active) {
+      // 状态未变的计数变化 = 服务端对账：静默替换、不播动画（§4.4）。
+      _displayCount = widget.count;
+      return;
+    }
+    final tapDriven = _expectedTarget == widget.active;
+    _expectedTarget = null;
+    if (tapDriven && !_reduceMotion) {
+      _fadeSwap = true;
+      _displayActive = widget.active;
+      _displayCount = widget.count;
+      if (widget.active) _scaleController.forward(from: 0);
+      return;
+    }
+    // 回滚 / 对账：零动画、计数与状态成对跳变。激活动画未播完则等
+    // 播完再跳（§4.3a，避免动画中途反转的抖动）。
+    _fadeSwap = false;
+    if (_scaleController.isAnimating) {
+      _scaleController.forward().whenComplete(() {
+        if (mounted) {
+          setState(() {
+            _displayActive = widget.active;
+            _displayCount = widget.count;
+          });
+        }
+      });
+    } else {
+      _displayActive = widget.active;
+      _displayCount = widget.count;
+    }
+  }
+
+  void _handleTap() {
+    _expectedTarget = !widget.active;
+    widget.onPressed!();
+  }
+
+  @override
+  void dispose() {
+    _scaleController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final variant = widget.variant;
+    final active = _displayActive;
+    final iconColor = active ? variant.activeIconColor : AppColors.inkSoft;
+    final countColor = active ? variant.activeCountColor : AppColors.inkSoft;
+    return Semantics(
+      label: widget.semanticLabel,
+      button: widget.onPressed != null,
+      child: InkWell(
+        onTap: widget.onPressed == null ? null : _handleTap,
+        borderRadius: BorderRadius.circular(AppRadius.pill),
+        child: ConstrainedBox(
+          constraints: const BoxConstraints(minWidth: 44, minHeight: 44),
+          child: Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 8),
+            child: Row(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                ScaleTransition(
+                  scale: _scale,
+                  child: AnimatedSwitcher(
+                    duration: _fadeSwap
+                        ? const Duration(milliseconds: 120)
+                        : Duration.zero,
+                    child: Icon(
+                      active ? variant.activeIcon : variant.inactiveIcon,
+                      key: ValueKey(active),
+                      size: 20,
+                      color: iconColor,
+                    ),
+                  ),
+                ),
+                const SizedBox(width: 4),
+                // 计数直接替换（§3.5：不做滚动动画，避免回滚二次滚动）。
+                Text(
+                  '$_displayCount',
+                  style: TextStyle(
+                    color: countColor,
+                    fontSize: 13,
+                    fontWeight: FontWeight.w600,
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/core/widgets/pet_avatar.dart

@@ -0,0 +1,169 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+/// 头像尺寸档（05 号规范 §3.1）。
+enum PetAvatarSize {
+  /// 96：档案页头部（收敛现 104 → 96，与表单页一致）。
+  xl(96),
+
+  /// 64：宠物列表卡。
+  lg(64),
+
+  /// 44：头部宠物切换器（最小触控目标）。
+  md(44),
+
+  /// 32：记录详情等行内。
+  sm(32);
+
+  const PetAvatarSize(this.dimension);
+
+  final double dimension;
+
+  /// 编辑徽标仅 xl / lg 档提供（05 §3.1）。
+  bool get supportsBadge => this == xl || this == lg;
+}
+
+/// 宠物头像（05 号规范 §3.1）：统一原档案页头部 / 编辑 sheet 各写一遍的
+/// 头像实现。圆形裁切 + 3px `surface` 白描边 + 轻投影（正典
+/// `.patbond-avatar` 规格），可选右下编辑徽标与品牌渐变环。
+///
+/// M2 首版不做头像上传（ADR-010 / D2-1 裁决），[url] 为 null 时渲染
+/// 本地占位形态（`surfaceTint` 底 + `Icons.pets`）；有图时经
+/// [RemoteImage] 加载（loading / 失败兜底由其内置）。
+class PetAvatar extends StatelessWidget {
+  const PetAvatar({
+    required this.size,
+    super.key,
+    this.url,
+    this.onTap,
+    this.showEditBadge = false,
+    this.ring = false,
+    this.enabled = true,
+    this.semanticLabel,
+  });
+
+  final PetAvatarSize size;
+
+  /// 头像图 URL；null 为本地占位形态（M2 默认）。
+  final String? url;
+
+  /// 可点击时整体 [InkWell] 圆形 ripple。
+  final VoidCallback? onTap;
+
+  /// 右下编辑徽标（`primaryStrong` 底 + 白 edit 图标，白/primaryStrong
+  /// 4.49:1 达非文字 3:1；修订现实现的 `primary` 底 2.75:1）。
+  final bool showEditBadge;
+
+  /// 2px `brandGradient` 外环（正典 story 环），仅作「当前选中」纯装饰指示。
+  final bool ring;
+
+  /// 禁用态 60% 不透明度（对齐 AppTextField 禁用惯例）。
+  final bool enabled;
+
+  final String? semanticLabel;
+
+  @override
+  Widget build(BuildContext context) {
+    final dimension = size.dimension;
+    // 3px 白描边内的图面尺寸。
+    final imageDimension = dimension - 6;
+
+    Widget avatar = Container(
+      width: dimension,
+      height: dimension,
+      decoration: const BoxDecoration(
+        shape: BoxShape.circle,
+        color: AppColors.surface,
+        boxShadow: [
+          BoxShadow(
+            color: Color(0x14000000), // rgba(0,0,0,0.08)
+            offset: Offset(0, 4),
+            blurRadius: 10,
+          ),
+        ],
+      ),
+      padding: const EdgeInsets.all(3),
+      child: ClipOval(
+        child: url == null
+            ? ColoredBox(
+                color: AppColors.surfaceTint,
+                child: Icon(
+                  Icons.pets,
+                  color: AppColors.muted,
+                  size: imageDimension * 0.45,
+                ),
+              )
+            : RemoteImage(
+                url: url!,
+                width: imageDimension,
+                height: imageDimension,
+                borderRadius: BorderRadius.circular(imageDimension / 2),
+              ),
+      ),
+    );
+
+    if (ring) {
+      avatar = Container(
+        padding: const EdgeInsets.all(2),
+        decoration: const BoxDecoration(
+          shape: BoxShape.circle,
+          gradient: AppColors.brandGradient,
+        ),
+        child: avatar,
+      );
+    }
+
+    if (showEditBadge && size.supportsBadge) {
+      avatar = Stack(
+        clipBehavior: Clip.none,
+        children: [
+          avatar,
+          const Positioned(right: 0, bottom: 0, child: _EditBadge()),
+        ],
+      );
+    }
+
+    if (onTap != null) {
+      avatar = InkWell(
+        onTap: enabled ? onTap : null,
+        customBorder: const CircleBorder(),
+        child: avatar,
+      );
+    }
+
+    if (!enabled) {
+      avatar = Opacity(opacity: 0.6, child: avatar);
+    }
+
+    if (semanticLabel != null) {
+      avatar = Semantics(
+        label: semanticLabel,
+        button: onTap != null,
+        child: avatar,
+      );
+    }
+    return avatar;
+  }
+}
+
+/// 32 圆编辑徽标：`primaryStrong` 底 + 白 edit 15（05 §3.1 无障碍修订）。
+class _EditBadge extends StatelessWidget {
+  const _EditBadge();
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: 32,
+      height: 32,
+      decoration: const BoxDecoration(
+        shape: BoxShape.circle,
+        color: AppColors.primaryStrong,
+        border: Border.fromBorderSide(
+          BorderSide(color: AppColors.surface, width: 2),
+        ),
+      ),
+      child: const Icon(Icons.edit, color: Colors.white, size: 15),
+    );
+  }
+}

lib/core/widgets/post_card.dart

@@ -0,0 +1,240 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/like_button.dart';
+import 'package:patbond_flutter/core/widgets/pet_avatar.dart';
+import 'package:patbond_flutter/core/widgets/post_media_grid.dart';
+import 'package:patbond_flutter/features/community/community_display.dart';
+import 'package:patbond_flutter/features/community/community_models.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+/// 帖子卡三形态（05 号规范 §2.1/§3.1）：home 私有 `_PostCard` 的升级
+/// 迁移，按媒体形态分支——
+///
+/// | 形态 | 媒体区 |
+/// | --- | --- |
+/// | 单图（mediaCount ≤ 1 且有封面） | 通栏出血 4:3 |
+/// | 多图（mediaCount > 1） | [PostMediaGrid] 折叠封面（FeedCard 契约只带封面 + 计数），水平 padding 14 |
+/// | 纯文字（无封面） | 无媒体区，正文放宽 ≤6 行、15/1.6 |
+///
+/// 头部行：作者头像 32 + 名字 14/w700 + 时间 12 `inkSoft`；求助帖
+/// 元信息尾追加 `TagPill(accent)`。降级作者（[AuthorSummary.isDegraded]）
+/// 渲染占位头像 + 「宠友」。操作行：[LikeButton]（点赞 / 收藏）+ 评论
+/// 计数 + 分享，各钮触控 44；互动回调传 null 即纯展示（T3-14 形态，
+/// ToggleSync 接线属 T3-15/16）。
+class PostCard extends StatelessWidget {
+  const PostCard({
+    required this.card,
+    super.key,
+    this.onTap,
+    this.onLikeTap,
+    this.onCommentTap,
+    this.onBookmarkTap,
+    this.onShareTap,
+    this.now,
+  });
+
+  final FeedCard card;
+
+  /// 整卡点按（帖子详情入口）。
+  final VoidCallback? onTap;
+
+  final VoidCallback? onLikeTap;
+  final VoidCallback? onCommentTap;
+  final VoidCallback? onBookmarkTap;
+  final VoidCallback? onShareTap;
+
+  /// 相对时间的参考时钟（测试注入；缺省取当前时间）。
+  final DateTime? now;
+
+  bool get _isTextOnly => card.coverImage == null;
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      clipBehavior: Clip.antiAlias,
+      child: InkWell(
+        onTap: onTap,
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            _header(context),
+            if (card.coverImage != null)
+              card.mediaCount > 1
+                  ? Padding(
+                      padding: const EdgeInsets.symmetric(horizontal: 14),
+                      child: PostMediaGrid(
+                        urls: [card.coverImage!.url],
+                        totalCount: card.mediaCount,
+                      ),
+                    )
+                  : AspectRatio(
+                      aspectRatio: 4 / 3,
+                      child: RemoteImage(url: card.coverImage!.url),
+                    ),
+            _body(context),
+            _actionRow(),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _header(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.all(14),
+      child: Row(
+        children: [
+          PetAvatar(size: PetAvatarSize.sm, url: card.author.avatarUrl),
+          const SizedBox(width: 10),
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  authorDisplayName(card.author),
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  style: const TextStyle(
+                    fontSize: 14,
+                    fontWeight: FontWeight.w700,
+                  ),
+                ),
+                const SizedBox(height: 2),
+                Row(
+                  children: [
+                    Text(
+                      feedRelativeTime(card.publishedAt, now: now),
+                      style: const TextStyle(
+                        color: AppColors.inkSoft,
+                        fontSize: 12,
+                      ),
+                    ),
+                    if (card.category == PostCategory.help) ...[
+                      const SizedBox(width: 6),
+                      const TagPill('求助', color: AppColors.accent),
+                    ],
+                  ],
+                ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _body(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.fromLTRB(14, 12, 14, 0),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          if (card.title != null) ...[
+            Text(
+              card.title!,
+              maxLines: 1,
+              overflow: TextOverflow.ellipsis,
+              style: Theme.of(context).textTheme.titleMedium,
+            ),
+            const SizedBox(height: 6),
+          ],
+          Text(
+            card.contentPreview,
+            // 纯文字帖放宽至 6 行并升字号补偿视觉重量（§2.1）。
+            maxLines: _isTextOnly ? 6 : 2,
+            overflow: TextOverflow.ellipsis,
+            style: _isTextOnly
+                ? const TextStyle(
+                    color: AppColors.ink,
+                    fontSize: 15,
+                    height: 1.6,
+                  )
+                : Theme.of(context).textTheme.bodyMedium,
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _actionRow() {
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 2),
+      child: Row(
+        children: [
+          LikeButton(
+            variant: LikeButtonVariant.like,
+            active: card.likedByMe,
+            count: card.likeCount,
+            onPressed: onLikeTap,
+            semanticLabel: '点赞',
+          ),
+          const SizedBox(width: 4),
+          _CommentCount(count: card.commentCount, onPressed: onCommentTap),
+          const SizedBox(width: 4),
+          LikeButton(
+            variant: LikeButtonVariant.bookmark,
+            active: card.bookmarkedByMe,
+            count: card.bookmarkCount,
+            onPressed: onBookmarkTap,
+            semanticLabel: '收藏',
+          ),
+          const Spacer(),
+          InkWell(
+            onTap: onShareTap,
+            borderRadius: BorderRadius.circular(AppRadius.pill),
+            child: const SizedBox(
+              width: 44,
+              height: 44,
+              child: Icon(
+                Icons.ios_share_outlined,
+                size: 20,
+                color: AppColors.inkSoft,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+/// 评论计数钮（与 LikeButton 同视觉规格，无激活态）。
+class _CommentCount extends StatelessWidget {
+  const _CommentCount({required this.count, this.onPressed});
+
+  final int count;
+  final VoidCallback? onPressed;
+
+  @override
+  Widget build(BuildContext context) {
+    return InkWell(
+      onTap: onPressed,
+      borderRadius: BorderRadius.circular(AppRadius.pill),
+      child: ConstrainedBox(
+        constraints: const BoxConstraints(minWidth: 44, minHeight: 44),
+        child: Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 8),
+          child: Row(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              const Icon(
+                Icons.chat_bubble_outline,
+                size: 20,
+                color: AppColors.inkSoft,
+              ),
+              const SizedBox(width: 4),
+              Text(
+                '$count',
+                style: const TextStyle(
+                  color: AppColors.inkSoft,
+                  fontSize: 13,
+                  fontWeight: FontWeight.w600,
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/core/widgets/post_media_grid.dart

@@ -0,0 +1,367 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/upload_progress_overlay.dart';
+import 'package:patbond_flutter/features/community/media_uploader.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+/// 图片九宫格展示态（05 号规范 §3.2）。
+///
+/// - 列数规则：2、4 图 → 2 列；3、5–9 图 → 3 列；全部 1:1 cover、
+///   格间距 4、单格圆角 `sm`(12)，`RemoteImage` 复用（loading tint 块 /
+///   失败图标兜底，缓存 key 已剥签名）。
+/// - 超出折叠：最多显 9 格，[totalCount] 超过显示数时末格叠
+///   `ink` 80% scrim + 白字「+N」20/w800（合成最亮白图 7.10:1；60% 档
+///   3.88:1 不达标弃用，§5.1 精算）。
+/// - 单图折叠形态：Feed 卡片契约只带封面 + mediaCount（FeedCard 裁剪），
+///   [urls] 单元素而 [totalCount] > 1 时渲染 4:3 单格 + 右下「+N」角标
+///   胶囊（同 80% scrim 精算）。
+///
+/// 编辑态（「＋」格 / 删除角标 / 进度覆盖层）见同文件 [PostMediaEditGrid]
+/// （T3-17 发布页选图区）。
+class PostMediaGrid extends StatelessWidget {
+  const PostMediaGrid({
+    required this.urls,
+    super.key,
+    this.totalCount,
+    this.onCellTap,
+  }) : assert(urls.length > 0, 'PostMediaGrid 至少一张图');
+
+  /// 可展示的图片 URL（Feed 卡片仅封面一张；详情页全量）。
+  final List<String> urls;
+
+  /// 实际总张数（缺省 = urls.length）；大于可展示数时渲染「+N」。
+  final int? totalCount;
+
+  /// 格子点按（全屏浏览入口，T3-15 详情页接线）。
+  final ValueChanged<int>? onCellTap;
+
+  static const _maxCells = 9;
+  static const _spacing = 4.0;
+
+  int get _effectiveTotal => totalCount ?? urls.length;
+
+  /// 列数规则（§3.2）：2、4 → 2 列；其余 → 3 列（1 图不走网格）。
+  static int columnsFor(int cellCount) =>
+      (cellCount == 2 || cellCount == 4) ? 2 : 3;
+
+  @override
+  Widget build(BuildContext context) {
+    if (urls.length == 1) {
+      return _CollapsedCover(
+        url: urls.first,
+        hiddenCount: _effectiveTotal - 1,
+        onTap: onCellTap == null ? null : () => onCellTap!(0),
+      );
+    }
+
+    final cellCount = urls.length > _maxCells ? _maxCells : urls.length;
+    final overflow = _effectiveTotal - cellCount;
+    final columns = columnsFor(cellCount);
+    return GridView.builder(
+      shrinkWrap: true,
+      physics: const NeverScrollableScrollPhysics(),
+      gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
+        crossAxisCount: columns,
+        mainAxisSpacing: _spacing,
+        crossAxisSpacing: _spacing,
+      ),
+      itemCount: cellCount,
+      itemBuilder: (context, index) {
+        final isOverflowCell = overflow > 0 && index == cellCount - 1;
+        Widget cell = RemoteImage(
+          url: urls[index],
+          borderRadius: BorderRadius.circular(AppRadius.sm),
+        );
+        if (isOverflowCell) {
+          cell = Stack(
+            fit: StackFit.expand,
+            children: [
+              cell,
+              DecoratedBox(
+                decoration: BoxDecoration(
+                  color: AppColors.ink.withAlpha(204),
+                  borderRadius: BorderRadius.circular(AppRadius.sm),
+                ),
+                child: Center(
+                  child: Text(
+                    '+$overflow',
+                    style: const TextStyle(
+                      color: Colors.white,
+                      fontSize: 20,
+                      fontWeight: FontWeight.w800,
+                    ),
+                  ),
+                ),
+              ),
+            ],
+          );
+        }
+        if (onCellTap != null) {
+          cell = InkWell(
+            onTap: () => onCellTap!(index),
+            borderRadius: BorderRadius.circular(AppRadius.sm),
+            child: cell,
+          );
+        }
+        return cell;
+      },
+    );
+  }
+}
+
+/// 编辑态九宫格（05 号规范 §3.2 编辑态；T3-17 发布页选图区）。
+///
+/// 与展示态 [PostMediaGrid] 同文件成组，但**独立成类**：展示态以
+/// 「至少一张图 + URL 列表」为前提（构造断言），编辑态的常态却是
+/// 「零张图 + 一个『＋』格」，共用一个构造签名只会让两边都别扭。
+///
+/// - 固定 3 列（九宫格语义），格间距 4、圆角 `sm`(12)、1:1 `cover`;
+///   缩略图直接渲染选图原始字节（[MediaUploadItem.previewBytes]，
+///   不落磁盘、不走网络；解码失败回落 surfaceTint 块 + pets 图标）。
+/// - 每格叠 [UploadProgressOverlay]（六态映射四视觉态）；可重试失败格
+///   整格点按重试，终态失败不给重试通栏。
+/// - 删除角标：右上 22 圆 `ink` 80% 实底 + 白 close 14，触控热区 32。
+/// - 「＋」格：虚线 1.5px 圆角 12 + `add_photo_alternate_outlined` 24
+///   `inkSoft`；[canAdd] 为 false（满 9 张）时隐藏。
+/// - 长按拖拽排序未做（05 §6 D9 可选项）：删格即整组重排，position 由
+///   [MediaUploader.buildAttachRequests] 按当前列表序重发号。
+class PostMediaEditGrid extends StatelessWidget {
+  const PostMediaEditGrid({
+    required this.items,
+    super.key,
+    this.canAdd = true,
+    this.onAdd,
+    this.onRemove,
+    this.onRetry,
+  });
+
+  /// 当前上传项快照（顺序 = position 语义）。
+  final List<MediaUploadItem> items;
+
+  /// 是否渲染「＋」格（剩余槽位 > 0）。
+  final bool canAdd;
+
+  final VoidCallback? onAdd;
+
+  /// 删格回调，参数为 [MediaUploadItem.localId]。
+  final ValueChanged<int>? onRemove;
+
+  /// 重试回调（仅可重试失败格触发），参数为 localId。
+  final ValueChanged<int>? onRetry;
+
+  static const _spacing = 4.0;
+  static const _columns = 3;
+
+  @override
+  Widget build(BuildContext context) {
+    final cellCount = items.length + (canAdd ? 1 : 0);
+    if (cellCount == 0) return const SizedBox.shrink();
+    return GridView.builder(
+      shrinkWrap: true,
+      physics: const NeverScrollableScrollPhysics(),
+      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+        crossAxisCount: _columns,
+        mainAxisSpacing: _spacing,
+        crossAxisSpacing: _spacing,
+      ),
+      itemCount: cellCount,
+      itemBuilder: (context, index) {
+        if (index == items.length) return _AddCell(onTap: onAdd);
+        return _EditCell(
+          item: items[index],
+          onRemove: onRemove == null
+              ? null
+              : () => onRemove!(items[index].localId),
+          onRetry: onRetry == null || !items[index].retryable
+              ? null
+              : () => onRetry!(items[index].localId),
+        );
+      },
+    );
+  }
+}
+
+class _EditCell extends StatelessWidget {
+  const _EditCell({required this.item, this.onRemove, this.onRetry});
+
+  final MediaUploadItem item;
+  final VoidCallback? onRemove;
+  final VoidCallback? onRetry;
+
+  @override
+  Widget build(BuildContext context) {
+    return Stack(
+      fit: StackFit.expand,
+      children: [
+        ClipRRect(
+          borderRadius: BorderRadius.circular(AppRadius.sm),
+          child: Image.memory(
+            item.previewBytes,
+            fit: BoxFit.cover,
+            gaplessPlayback: true,
+            // 选图字节无法解码时的兜底（RemoteImage 同款形态）。
+            errorBuilder: (context, _, _) => const ColoredBox(
+              color: AppColors.surfaceTint,
+              child: Center(
+                child: Icon(Icons.pets, color: AppColors.muted, size: 20),
+              ),
+            ),
+          ),
+        ),
+        ClipRRect(
+          borderRadius: BorderRadius.circular(AppRadius.sm),
+          child: UploadProgressOverlay(
+            phase: item.phase,
+            progress: item.progress,
+            onRetry: onRetry,
+          ),
+        ),
+        Positioned(
+          right: 0,
+          top: 0,
+          child: GestureDetector(
+            onTap: onRemove,
+            behavior: HitTestBehavior.opaque,
+            child: const Padding(
+              // 22 圆角标 + padding 撑到 32 触控热区。
+              padding: EdgeInsets.all(5),
+              child: DecoratedBox(
+                decoration: BoxDecoration(
+                  shape: BoxShape.circle,
+                  color: Color(0xCC3E2A1F),
+                ),
+                child: SizedBox(
+                  width: 22,
+                  height: 22,
+                  child: Center(
+                    child: Icon(Icons.close, size: 14, color: Colors.white),
+                  ),
+                ),
+              ),
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+}
+
+class _AddCell extends StatelessWidget {
+  const _AddCell({this.onTap});
+
+  final VoidCallback? onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    return InkWell(
+      onTap: onTap,
+      borderRadius: BorderRadius.circular(AppRadius.sm),
+      child: CustomPaint(
+        painter: const _DashedBorderPainter(),
+        child: const Center(
+          child: Icon(
+            Icons.add_photo_alternate_outlined,
+            size: 24,
+            color: AppColors.inkSoft,
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+/// 「＋」格的虚线圆角边框（Flutter 无内置虚线边框，按规范 1.5px 自绘）。
+class _DashedBorderPainter extends CustomPainter {
+  const _DashedBorderPainter();
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    final paint = Paint()
+      ..color = AppColors.border
+      ..strokeWidth = 1.5
+      ..style = PaintingStyle.stroke;
+    final path = Path()
+      ..addRRect(
+        RRect.fromRectAndRadius(
+          Offset.zero & size,
+          const Radius.circular(AppRadius.sm),
+        ),
+      );
+    const dash = 5.0;
+    const gap = 4.0;
+    for (final metric in path.computeMetrics()) {
+      var distance = 0.0;
+      while (distance < metric.length) {
+        final next = distance + dash;
+        canvas.drawPath(
+          metric.extractPath(
+            distance,
+            next > metric.length ? metric.length : next,
+          ),
+          paint,
+        );
+        distance = next + gap;
+      }
+    }
+  }
+
+  @override
+  bool shouldRepaint(_DashedBorderPainter oldDelegate) => false;
+}
+
+/// 单图折叠形态：4:3 圆角封面 + 右下「+N」胶囊角标。
+class _CollapsedCover extends StatelessWidget {
+  const _CollapsedCover({
+    required this.url,
+    required this.hiddenCount,
+    this.onTap,
+  });
+
+  final String url;
+  final int hiddenCount;
+  final VoidCallback? onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    Widget cover = AspectRatio(
+      aspectRatio: 4 / 3,
+      child: Stack(
+        fit: StackFit.expand,
+        children: [
+          RemoteImage(
+            url: url,
+            borderRadius: BorderRadius.circular(AppRadius.sm),
+          ),
+          if (hiddenCount > 0)
+            Positioned(
+              right: 8,
+              bottom: 8,
+              child: Container(
+                padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                decoration: BoxDecoration(
+                  color: AppColors.ink.withAlpha(204),
+                  borderRadius: BorderRadius.circular(AppRadius.pill),
+                ),
+                child: Text(
+                  '+$hiddenCount',
+                  style: const TextStyle(
+                    color: Colors.white,
+                    fontSize: 12,
+                    fontWeight: FontWeight.w700,
+                  ),
+                ),
+              ),
+            ),
+        ],
+      ),
+    );
+    if (onTap != null) {
+      cover = InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(AppRadius.sm),
+        child: cover,
+      );
+    }
+    return cover;
+  }
+}

lib/core/widgets/primary_button.dart

@@ -0,0 +1,47 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+
+/// 主操作按钮：全宽 × 52 高，`primaryStrong` 填充（设计规范 §2.2 / §4.3 / §4.4）。
+///
+/// [isLoading] 为 true 时文字替换为 20×20 白色转圈，按钮尺寸不变、不可再点，
+/// 填充保持 `primaryStrong`（loading 不是禁用态，不置灰）。
+class PrimaryButton extends StatelessWidget {
+  const PrimaryButton({
+    required this.label,
+    super.key,
+    this.onPressed,
+    this.isLoading = false,
+  });
+
+  final String label;
+
+  /// 传 null 进入禁用态（主题 disabled 置灰）。
+  final VoidCallback? onPressed;
+
+  final bool isLoading;
+
+  @override
+  Widget build(BuildContext context) {
+    return SizedBox(
+      width: double.infinity,
+      height: 52,
+      child: FilledButton(
+        onPressed: isLoading ? null : onPressed,
+        style: isLoading
+            ? FilledButton.styleFrom(
+                disabledBackgroundColor: AppColors.primaryStrong,
+              )
+            : null,
+        child: isLoading
+            ? const SizedBox.square(
+                dimension: 20,
+                child: CircularProgressIndicator(
+                  strokeWidth: 2.5,
+                  color: Colors.white,
+                ),
+              )
+            : Text(label),
+      ),
+    );
+  }
+}

lib/core/widgets/record_type_dot.dart

@@ -0,0 +1,144 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+
+/// M2 记录类型（05 号规范 §2 五种，「其他」为扩展兜底；
+/// T2-14 为六类健康事件增补 feeding / grooming / measurement 三型，
+/// 色族复用 05 §2 已审计的四个色对，仅图标与文案区分——对比度结论不变）。
+enum RecordType {
+  weight,
+  vaccine,
+  deworming,
+  medical,
+  other,
+  feeding,
+  grooming,
+  measurement,
+}
+
+/// 类型 → 图标 + 三色（dot 底 8% 淡染基色 / 图标色 / 文字标签色）+ 文案的
+/// 唯一映射出口（05 §3.2：映射只存在于本文件一处，杜绝散落硬编码）。
+///
+/// 对比度依据 05 §2 自查表：图标于 dot 底 4.16–7.39:1（非文字 ≥3:1）、
+/// 文字于 dot 底 5.78–8.74:1（AA ≥4.5:1）均达标。类型必须以
+/// 「图标 + 文字」双通道呈现，不得单靠颜色区分（色盲可辨性）。
+class RecordTypeStyle {
+  const RecordTypeStyle({
+    required this.icon,
+    required this.baseColor,
+    required this.iconColor,
+    required this.inkColor,
+    required this.label,
+  });
+
+  final IconData icon;
+
+  /// dot 底基色（渲染时 `withAlpha(20)` 即 8% 淡染）。
+  final Color baseColor;
+
+  final Color iconColor;
+
+  /// 文字/标签色，供 TagPill、详情页复用。
+  final Color inkColor;
+
+  final String label;
+}
+
+/// 五类映射常量（05 §2 表逐行对应）。
+const Map<RecordType, RecordTypeStyle> recordTypeStyles = {
+  RecordType.weight: RecordTypeStyle(
+    icon: Icons.monitor_weight_outlined,
+    baseColor: AppColors.primary,
+    iconColor: AppColors.primaryStrong,
+    inkColor: AppColors.primaryDark,
+    label: '体重',
+  ),
+  RecordType.vaccine: RecordTypeStyle(
+    icon: Icons.vaccines_outlined,
+    baseColor: AppColors.success,
+    iconColor: AppColors.successInk,
+    inkColor: AppColors.successInk,
+    label: '疫苗',
+  ),
+  RecordType.deworming: RecordTypeStyle(
+    icon: Icons.pest_control,
+    baseColor: AppColors.accent,
+    iconColor: AppColors.accentDark,
+    inkColor: AppColors.accentDark,
+    label: '驱虫',
+  ),
+  RecordType.medical: RecordTypeStyle(
+    icon: Icons.medical_services_outlined,
+    baseColor: AppColors.error,
+    iconColor: AppColors.error,
+    inkColor: AppColors.errorDark,
+    label: '就医',
+  ),
+  RecordType.other: RecordTypeStyle(
+    icon: Icons.sticky_note_2_outlined,
+    baseColor: AppColors.muted,
+    iconColor: AppColors.inkSoft,
+    inkColor: AppColors.inkSoft,
+    label: '其他',
+  ),
+  // —— T2-14 健康事件增补（色族复用已审计色对）——
+  RecordType.feeding: RecordTypeStyle(
+    icon: Icons.restaurant_outlined,
+    baseColor: AppColors.success,
+    iconColor: AppColors.successInk,
+    inkColor: AppColors.successInk,
+    label: '喂养',
+  ),
+  RecordType.grooming: RecordTypeStyle(
+    icon: Icons.content_cut,
+    baseColor: AppColors.accent,
+    iconColor: AppColors.accentDark,
+    inkColor: AppColors.accentDark,
+    label: '洗护',
+  ),
+  RecordType.measurement: RecordTypeStyle(
+    icon: Icons.straighten_outlined,
+    baseColor: AppColors.primary,
+    iconColor: AppColors.primaryStrong,
+    inkColor: AppColors.primaryDark,
+    label: '测量',
+  ),
+};
+
+/// 圆标尺寸档（05 §3.2）。图标尺寸 = dot 的 50%。
+enum RecordTypeDotSize {
+  /// 24：表单类型选择器内。
+  sm(24),
+
+  /// 40：时间线条目。
+  md(40),
+
+  /// 56：记录详情页头。
+  lg(56);
+
+  const RecordTypeDotSize(this.dimension);
+
+  final double dimension;
+}
+
+/// 记录类型圆标（05 号规范 §3.2）：正圆淡染底 + 类型图标。
+/// 无自身点击态（点击归属父容器）、无禁用态。
+class RecordTypeDot extends StatelessWidget {
+  const RecordTypeDot({required this.type, required this.size, super.key});
+
+  final RecordType type;
+  final RecordTypeDotSize size;
+
+  @override
+  Widget build(BuildContext context) {
+    final style = recordTypeStyles[type]!;
+    return Container(
+      width: size.dimension,
+      height: size.dimension,
+      decoration: BoxDecoration(
+        shape: BoxShape.circle,
+        color: style.baseColor.withAlpha(20),
+      ),
+      child: Icon(style.icon, color: style.iconColor, size: size.dimension / 2),
+    );
+  }
+}

lib/core/widgets/upload_progress_overlay.dart

@@ -0,0 +1,143 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/features/community/media_uploader.dart';
+
+/// 上传进度覆盖层（设计规范 05 号 §3.3）：叠加在编辑态九宫格单格上,
+/// 四视觉态映射 [MediaItemPhase]：
+///
+/// | 视觉态 | 阶段 | 形态 |
+/// | --- | --- | --- |
+/// | 排队 | queued / compressing | ink 40% scrim + 「等待中」白字胶囊 |
+/// | 上传中 | uploading / confirming | scrim + 白色环形进度 36 + 百分比胶囊 |
+/// | 成功 | ready | scrim 150ms 淡出，无残留角标 |
+/// | 失败 | failed | error 12% scrim + errorDark 图标 + 底部「重试」通栏 |
+///
+/// 失败态整格点按重试（[onRetry]，仅可重试失败传入）；组件本身不含
+/// 图片，由九宫格把它叠在缩略图上（Stack）。
+class UploadProgressOverlay extends StatelessWidget {
+  const UploadProgressOverlay({
+    required this.phase,
+    this.progress = 0,
+    this.onRetry,
+    super.key,
+  });
+
+  final MediaItemPhase phase;
+
+  /// 直传进度 0..1（uploading 态显示；confirming 定格 100%）。
+  final double progress;
+
+  /// 失败态整格点按回调；null 即失败不可重试（终态，只展示不响应）。
+  final VoidCallback? onRetry;
+
+  @override
+  Widget build(BuildContext context) {
+    return switch (phase) {
+      MediaItemPhase.queued || MediaItemPhase.compressing => _Scrim(
+        child: Center(child: _pill(const Text('等待中', style: _pillTextSm))),
+      ),
+      MediaItemPhase.uploading || MediaItemPhase.confirming => _Scrim(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            SizedBox(
+              width: 36,
+              height: 36,
+              child: CircularProgressIndicator(
+                value: phase == MediaItemPhase.confirming ? 1.0 : progress,
+                color: Colors.white,
+                backgroundColor: Colors.white24,
+                strokeWidth: 3,
+              ),
+            ),
+            const SizedBox(height: 8),
+            _pill(
+              Text(
+                '${((phase == MediaItemPhase.confirming ? 1.0 : progress) * 100).round()}%',
+                style: _pillTextXs,
+              ),
+            ),
+          ],
+        ),
+      ),
+      // 成功：scrim 150ms 淡出后不留任何角标。
+      MediaItemPhase.ready => const IgnorePointer(
+        child: AnimatedOpacity(
+          opacity: 0,
+          duration: Duration(milliseconds: 150),
+          child: _Scrim(child: SizedBox.expand()),
+        ),
+      ),
+      MediaItemPhase.failed => GestureDetector(
+        onTap: onRetry,
+        child: Container(
+          color: AppColors.error.withAlpha(31),
+          child: Column(
+            children: [
+              const Expanded(
+                child: Center(
+                  child: Icon(
+                    Icons.error_outline,
+                    size: 24,
+                    color: AppColors.errorDark,
+                  ),
+                ),
+              ),
+              if (onRetry != null)
+                Container(
+                  width: double.infinity,
+                  color: AppColors.errorDark,
+                  padding: const EdgeInsets.symmetric(vertical: 4),
+                  child: const Text(
+                    '重试',
+                    textAlign: TextAlign.center,
+                    style: TextStyle(
+                      color: Colors.white,
+                      fontSize: 11,
+                      fontWeight: FontWeight.w700,
+                    ),
+                  ),
+                ),
+            ],
+          ),
+        ),
+      ),
+    };
+  }
+
+  static const _pillTextSm = TextStyle(
+    color: Colors.white,
+    fontSize: 12,
+    fontWeight: FontWeight.w600,
+  );
+
+  static const _pillTextXs = TextStyle(
+    color: Colors.white,
+    fontSize: 11,
+    fontWeight: FontWeight.w700,
+  );
+
+  /// 白字衬 ink 80% 胶囊底（对 40% scrim 上的合成底色对比度兜底，§3.3）。
+  Widget _pill(Widget child) {
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
+      decoration: BoxDecoration(
+        color: AppColors.ink.withAlpha(204),
+        borderRadius: const BorderRadius.all(Radius.circular(AppRadius.pill)),
+      ),
+      child: child,
+    );
+  }
+}
+
+/// ink 40% 全格 scrim。
+class _Scrim extends StatelessWidget {
+  const _Scrim({required this.child});
+
+  final Widget child;
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(color: AppColors.ink.withAlpha(102), child: child);
+  }
+}

lib/data/demo_data.dart

@@ -0,0 +1,245 @@
+import 'package:patbond_flutter/models/models.dart';
+
+const petAvatar =
+    'https://images.unsplash.com/photo-1552053831-71594a27632d?auto=format&fit=crop&w=600&q=85';
+const userAvatar =
+    'https://images.unsplash.com/photo-1494790108377-be9c29b29330?auto=format&fit=crop&w=300&q=80';
+const generatedPetImage =
+    'https://images.unsplash.com/photo-1605568427561-40dd23c2acea?auto=format&fit=crop&w=1200&q=85';
+
+const locationWeatherOptions = [
+  LocationWeather(
+    city: '北京',
+    district: '朝阳区',
+    temperature: 28,
+    condition: WeatherCondition.sunny,
+    conditionText: '晴',
+    highTemperature: 31,
+    lowTemperature: 21,
+    humidity: 42,
+  ),
+  LocationWeather(
+    city: '上海',
+    district: '浦东新区',
+    temperature: 25,
+    condition: WeatherCondition.cloudy,
+    conditionText: '多云',
+    highTemperature: 28,
+    lowTemperature: 22,
+    humidity: 68,
+  ),
+  LocationWeather(
+    city: '深圳',
+    district: '南山区',
+    temperature: 32,
+    condition: WeatherCondition.rainy,
+    conditionText: '阵雨',
+    highTemperature: 34,
+    lowTemperature: 27,
+    humidity: 81,
+  ),
+  LocationWeather(
+    city: '成都',
+    district: '高新区',
+    temperature: 23,
+    condition: WeatherCondition.overcast,
+    conditionText: '阴',
+    highTemperature: 26,
+    lowTemperature: 19,
+    humidity: 72,
+  ),
+  LocationWeather(
+    city: '杭州',
+    district: '西湖区',
+    temperature: 27,
+    condition: WeatherCondition.cloudy,
+    conditionText: '多云',
+    highTemperature: 30,
+    lowTemperature: 22,
+    humidity: 64,
+  ),
+  LocationWeather(
+    city: '哈尔滨',
+    district: '道里区',
+    temperature: 6,
+    condition: WeatherCondition.snow,
+    conditionText: '小雪',
+    highTemperature: 8,
+    lowTemperature: 1,
+    humidity: 73,
+  ),
+];
+
+final initialLocationWeather = locationWeatherOptions.first;
+
+const initialPet = PetProfile(
+  name: '豆豆',
+  breed: '柴犬',
+  gender: PetGender.male,
+  birthday: '2024-05-15',
+  weight: 5.2,
+  tags: ['已绝育', '疫苗齐全', '定期驱虫', '芯片植入'],
+  avatarUrl: petAvatar,
+);
+
+const initialPosts = [
+  PostModel(
+    id: 'post1',
+    authorName: '豆豆的妈妈',
+    authorAvatar: userAvatar,
+    time: '2小时前',
+    breedTag: '柴犬',
+    content: '用 AI 把豆豆生成了治愈系插画，太可爱了吧！大家也快去试试创作功能！✨',
+    mainImage: generatedPetImage,
+    likes: 128,
+    tags: ['AI创作', '柴犬', 'Patbond'],
+    comments: [
+      CommentModel(
+        id: 'c1',
+        authorName: 'CorgiLover99',
+        authorAvatar:
+            'https://images.unsplash.com/photo-1534528741775-53994a69daeb?auto=format&fit=crop&w=200&q=80',
+        content: '这也太像了吧！求教程怎么生成的？',
+        time: '1小时前',
+      ),
+      CommentModel(
+        id: 'c2',
+        authorName: 'MiloDaCat',
+        authorAvatar:
+            'https://images.unsplash.com/photo-1535713875002-d1d0cf377fde?auto=format&fit=crop&w=200&q=80',
+        content: '好可爱的画风，豆豆真上镜！',
+        time: '45分钟前',
+      ),
+    ],
+  ),
+  PostModel(
+    id: 'post2',
+    authorName: 'Momo と猫',
+    authorAvatar:
+        'https://images.unsplash.com/photo-1438761681033-6461ffad8d80?auto=format&fit=crop&w=200&q=80',
+    time: '5小时前',
+    breedTag: '求助专区',
+    content: '猫咪最近总是挠耳朵，有懂的朋友吗？',
+    mainImage:
+        'https://images.unsplash.com/photo-1574158622682-e40e69881006?auto=format&fit=crop&w=1200&q=85',
+    likes: 12,
+    tags: ['猫咪健康', '求助'],
+    comments: [
+      CommentModel(
+        id: 'c3',
+        authorName: '猫奴小七',
+        authorAvatar:
+            'https://images.unsplash.com/photo-1527980965255-d3b416303d12?auto=format&fit=crop&w=200&q=80',
+        content: '建议先去医院检查耳道，不要自行用药哦。',
+        time: '4小时前',
+      ),
+    ],
+  ),
+];
+
+const serviceProviders = [
+  ServiceProviderModel(
+    id: 'h1',
+    kind: ProviderKind.hospital,
+    name: '安宠动物医院（高新旗舰店）',
+    distance: '1.2km',
+    rating: 4.9,
+    description: '猫科内科 · 骨外科 · 预防医学 · 24H急诊',
+    tags: ['猫专科认证', '24H急诊'],
+    price: 299,
+    image:
+        'https://images.unsplash.com/photo-1628009368231-7bb7cfcb0def?auto=format&fit=crop&w=900&q=85',
+    verified: true,
+  ),
+  ServiceProviderModel(
+    id: 'h2',
+    kind: ProviderKind.hospital,
+    name: '瑞派宠物医院（南山分院）',
+    distance: '3.5km',
+    rating: 4.7,
+    description: '异宠专科 · 牙科 · 皮肤科',
+    tags: ['异宠专家坐诊'],
+    price: 399,
+    image:
+        'https://images.unsplash.com/photo-1581888227599-779811939961?auto=format&fit=crop&w=900&q=85',
+  ),
+  ServiceProviderModel(
+    id: 'g1',
+    kind: ProviderKind.grooming,
+    name: 'PawSpa 高级宠物沙龙',
+    distance: '1.6km',
+    rating: 4.9,
+    description: '资深美容师主理 · 环境静音 · 猫咪免应激',
+    tags: ['日系精修', '猫咪免应激'],
+    price: 158,
+    image:
+        'https://images.unsplash.com/photo-1516734212186-a967f81ad0d7?auto=format&fit=crop&w=900&q=85',
+    verified: true,
+  ),
+  ServiceProviderModel(
+    id: 'p1',
+    kind: ProviderKind.personal,
+    name: '阳光遛狗员－阿健',
+    distance: '0.8km',
+    rating: 4.9,
+    description: '资深铲屎官，提供耐心、安全的上门遛狗服务。',
+    tags: ['实时定位', '自带清洁包', '只接中小型犬'],
+    price: 45,
+    image:
+        'https://images.unsplash.com/photo-1601758228041-f3b2795255f1?auto=format&fit=crop&w=900&q=85',
+    verified: true,
+  ),
+  ServiceProviderModel(
+    id: 'p2',
+    kind: ProviderKind.personal,
+    name: '喵汪小保姆－莉莉',
+    distance: '3.5km',
+    rating: 4.7,
+    description: '周末全天可接单，可接大型犬并提供喂食服务。',
+    tags: ['可接大型犬', '体能充沛'],
+    price: 60,
+    image:
+        'https://images.unsplash.com/photo-1558788353-f76d92427f16?auto=format&fit=crop&w=900&q=85',
+  ),
+];
+
+const creationStyles = [
+  CreationStyle(
+    id: 'healing',
+    title: '治愈动画',
+    subtitle: '梦幻动漫感',
+    image: generatedPetImage,
+  ),
+  CreationStyle(
+    id: '3d',
+    title: '3D 卡通',
+    subtitle: '经典渲染',
+    image:
+        'https://images.unsplash.com/photo-1558929996-da64ba858215?auto=format&fit=crop&w=700&q=85',
+  ),
+  CreationStyle(
+    id: 'comic',
+    title: '漫画风',
+    subtitle: '帅气网格',
+    image:
+        'https://images.unsplash.com/photo-1543466835-00a7907e9de1?auto=format&fit=crop&w=700&q=85',
+  ),
+  CreationStyle(
+    id: 'watercolor',
+    title: '水彩',
+    subtitle: '柔和手绘质感',
+    image:
+        'https://images.unsplash.com/photo-1537151608828-ea2b11777ee8?auto=format&fit=crop&w=700&q=85',
+  ),
+];
+
+const serviceCategories = [
+  ('投喂', 'restaurant'),
+  ('遛狗', 'walk'),
+  ('洗澡', 'bath'),
+  ('美容', 'cut'),
+  ('寄养', 'home'),
+  ('运输', 'truck'),
+  ('领养', 'favorite'),
+  ('医院', 'hospital'),
+];

lib/features/auth/auth_models.dart

@@ -0,0 +1,58 @@
+/// 认证接口的响应模型（接口契约冻结稿，字段名与后端一致）。
+class AuthTokens {
+  const AuthTokens({
+    required this.userId,
+    required this.tokenType,
+    required this.accessToken,
+    required this.accessTokenExpiresAt,
+    required this.refreshToken,
+    required this.refreshTokenExpiresAt,
+  });
+
+  factory AuthTokens.fromJson(Map<String, dynamic> json) {
+    return AuthTokens(
+      userId: json['userId'] as String,
+      tokenType: json['tokenType'] as String,
+      accessToken: json['accessToken'] as String,
+      accessTokenExpiresAt: DateTime.parse(
+        json['accessTokenExpiresAt'] as String,
+      ),
+      refreshToken: json['refreshToken'] as String,
+      refreshTokenExpiresAt: DateTime.parse(
+        json['refreshTokenExpiresAt'] as String,
+      ),
+    );
+  }
+
+  final String userId;
+  final String tokenType;
+  final String accessToken;
+  final DateTime accessTokenExpiresAt;
+  final String refreshToken;
+  final DateTime refreshTokenExpiresAt;
+}
+
+/// `GET /api/v1/me` 的用户资料。
+class UserProfile {
+  const UserProfile({
+    required this.userId,
+    required this.username,
+    required this.phone,
+    required this.createdAt,
+  });
+
+  factory UserProfile.fromJson(Map<String, dynamic> json) {
+    return UserProfile(
+      userId: json['userId'] as String,
+      username: json['username'] as String,
+      // 服务端可返回 null（历史数据或未来第三方注册），不得非空强转。
+      phone: json['phone'] as String?,
+      createdAt: DateTime.parse(json['createdAt'] as String),
+    );
+  }
+
+  final String userId;
+  final String username;
+  final String? phone;
+  final DateTime createdAt;
+}

lib/features/auth/auth_repository.dart

@@ -0,0 +1,142 @@
+import 'package:patbond_flutter/analytics/analytics_service.dart';
+import 'package:patbond_flutter/core/network/api_client.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/network/token_refresher.dart';
+import 'package:patbond_flutter/features/auth/auth_models.dart';
+import 'package:patbond_flutter/features/auth/session_manager.dart';
+import 'package:uuid/uuid.dart';
+
+/// Splash 会话恢复的裁决结果。状态切换由 Splash 在最短停留时间后执行。
+enum SessionRestoreResult { authenticated, noSession }
+
+/// 认证仓库接口（页面依赖此抽象，widget 测试注入假实现）。
+abstract class AuthRepository {
+  Future<void> login({required String username, required String password});
+
+  Future<void> register({
+    required String username,
+    required String phone,
+    required String password,
+  });
+
+  /// 撤销当前会话并清除本地凭证。服务端调用失败也保证本地清除。
+  Future<void> logout();
+
+  /// 启动恢复：本地有 refresh token 则静默刷新。
+  /// 网络失败抛 [ApiNetworkException]（token 保留）；
+  /// refresh 失效抛 [SessionExpiredException]（会话已清）。
+  Future<SessionRestoreResult> restoreSession();
+
+  Future<UserProfile> me();
+}
+
+class ApiAuthRepository implements AuthRepository {
+  ApiAuthRepository({
+    required this._api,
+    required this._session,
+    required this._refresher,
+    this._analytics,
+    this._uuid = const Uuid(),
+  });
+
+  final ApiClient _api;
+  final SessionManager _session;
+  final TokenRefresher _refresher;
+  final AnalyticsService? _analytics;
+  final Uuid _uuid;
+
+  @override
+  Future<void> login({
+    required String username,
+    required String password,
+  }) async {
+    final startTime = DateTime.now();
+    try {
+      final data = await _api.request(
+        '/api/v1/auth/login',
+        body: {'username': username, 'password': password},
+      );
+      await _session.saveSession(
+        AuthTokens.fromJson(data! as Map<String, dynamic>),
+      );
+      _analytics?.identify(_session.userId!);
+      _analytics?.trackEvent('auth_login_succeeded', {
+        'identifierType': 'username',
+        'durationMs': DateTime.now().difference(startTime).inMilliseconds,
+      });
+    } catch (error) {
+      _analytics?.trackEvent('auth_login_failed', {
+        'identifierType': 'username',
+        'failureReason': error.toString(),
+      });
+      rethrow;
+    }
+  }
+
+  @override
+  Future<void> register({
+    required String username,
+    required String phone,
+    required String password,
+  }) async {
+    final startTime = DateTime.now();
+    try {
+      final data = await _api.request(
+        '/api/v1/auth/register',
+        body: {'username': username, 'phone': phone, 'password': password},
+        // 每次提交一个幂等键；token 刷新后的自动重放沿用同一个键。
+        headers: {'Idempotency-Key': _uuid.v4()},
+      );
+      await _session.saveSession(
+        AuthTokens.fromJson(data! as Map<String, dynamic>),
+      );
+      _analytics?.identify(_session.userId!);
+      _analytics?.trackEvent('auth_register_succeeded', {
+        'durationMs': DateTime.now().difference(startTime).inMilliseconds,
+      });
+    } catch (error) {
+      _analytics?.trackEvent('auth_register_failed', {
+        'failureReason': error.toString(),
+      });
+      rethrow;
+    }
+  }
+
+  @override
+  Future<void> logout() async {
+    final refreshToken = _session.refreshToken;
+    try {
+      await _api.request(
+        '/api/v1/auth/logout',
+        body: {'refreshToken': refreshToken},
+        requiresAuth: true,
+      );
+    } on ApiException {
+      // 服务端撤销失败不阻塞本地登出；refresh 侧最终会自然过期。
+    } finally {
+      await _session.clearSession();
+      _analytics?.reset();
+      _analytics?.trackEvent('auth_logout', {'serverRevoked': true});
+    }
+  }
+
+  @override
+  Future<SessionRestoreResult> restoreSession() async {
+    await _session.loadFromStorage();
+    if (_session.refreshToken == null) {
+      return SessionRestoreResult.noSession;
+    }
+    await _refresher.refresh();
+    return SessionRestoreResult.authenticated;
+  }
+
+  @override
+  Future<UserProfile> me() async {
+    final data = await _api.request(
+      '/api/v1/me',
+      method: 'GET',
+      requiresAuth: true,
+    );
+    return UserProfile.fromJson(data! as Map<String, dynamic>);
+  }
+}

lib/features/auth/login_page.dart

@@ -0,0 +1,227 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/semantics.dart';
+import 'package:flutter/services.dart';
+import 'package:patbond_flutter/analytics/analytics_page_name.dart';
+import 'package:patbond_flutter/core/navigation/fade_route.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/app_text_field.dart';
+import 'package:patbond_flutter/core/widgets/auth_scaffold.dart';
+import 'package:patbond_flutter/core/widgets/brand_mark.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/primary_button.dart';
+import 'package:patbond_flutter/features/auth/auth_repository.dart';
+import 'package:patbond_flutter/features/auth/register_page.dart';
+
+enum _Field { account, password }
+
+/// 登录页（12 号组装稿 §5）。登录成功后由认证状态机切入主壳。
+class LoginPage extends StatefulWidget {
+  const LoginPage({required this.authRepository, super.key});
+
+  final AuthRepository authRepository;
+
+  @override
+  State<LoginPage> createState() => _LoginPageState();
+}
+
+class _LoginPageState extends State<LoginPage> {
+  final _accountCtrl = TextEditingController();
+  final _passwordCtrl = TextEditingController();
+  String? _accountError;
+  String? _passwordError;
+  String? _formError;
+  bool _submitting = false;
+
+  @override
+  void dispose() {
+    _accountCtrl.dispose();
+    _passwordCtrl.dispose();
+    super.dispose();
+  }
+
+  String? _validateAccount() =>
+      _accountCtrl.text.trim().isEmpty ? '请输入用户名或手机号' : null;
+
+  String? _validatePassword() =>
+      _passwordCtrl.text.trim().isEmpty ? '请输入密码' : null;
+
+  void _validateAccountOnBlur() {
+    if (!mounted) return;
+    setState(() => _accountError = _validateAccount());
+  }
+
+  void _validatePasswordOnBlur() {
+    if (!mounted) return;
+    setState(() => _passwordError = _validatePassword());
+  }
+
+  /// 字段变更即清除本字段错误与表单级横幅。
+  void _clearErrors({required _Field field}) {
+    if (_formError == null &&
+        (field == _Field.account ? _accountError : _passwordError) == null) {
+      return;
+    }
+    setState(() {
+      _formError = null;
+      if (field == _Field.account) _accountError = null;
+      if (field == _Field.password) _passwordError = null;
+    });
+  }
+
+  void _showFormError(String message) {
+    setState(() => _formError = message);
+    SemanticsService.sendAnnouncement(
+      View.of(context),
+      message,
+      TextDirection.ltr,
+    );
+  }
+
+  void _showNetworkSnackBar() {
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(
+        content: const Text('网络异常，请检查网络后重试'),
+        action: SnackBarAction(label: '重试', onPressed: _submit),
+      ),
+    );
+  }
+
+  Future<void> _submit() async {
+    if (_submitting) return;
+    final accountError = _validateAccount();
+    final passwordError = _validatePassword();
+    if (accountError != null || passwordError != null) {
+      setState(() {
+        _accountError = accountError;
+        _passwordError = passwordError;
+      });
+      return;
+    }
+    setState(() {
+      _submitting = true;
+      _formError = null;
+    });
+    try {
+      await widget.authRepository.login(
+        username: _accountCtrl.text.trim(),
+        password: _passwordCtrl.text.trim(),
+      );
+      TextInput.finishAutofillContext();
+      // 认证状态机随 saveSession 切换，根路由 300ms fade 进主壳。
+    } on ApiBusinessException catch (error) {
+      if (!mounted) return;
+      _showFormError(switch (error.code) {
+        ApiCodes.badCredentials => '用户名或密码错误',
+        ApiCodes.loginLocked => '尝试次数过多，账号已临时锁定，请稍后再试',
+        _ => '登录失败，请稍后重试',
+      });
+    } on ApiRateLimitException {
+      if (!mounted) return;
+      _showFormError('尝试次数过多，请稍后再试');
+    } on ApiNetworkException {
+      if (!mounted) return;
+      _showNetworkSnackBar();
+    } on SessionExpiredException {
+      // 登录请求不带会话，理论不可达；静默留在登录页。
+    } finally {
+      if (mounted) setState(() => _submitting = false);
+    }
+  }
+
+  void _goRegister() {
+    Navigator.of(context).push(
+      fadePageRoute<void>(
+        RegisterPage(authRepository: widget.authRepository),
+        settings: RouteSettings(name: AnalyticsPageName.register.pageName),
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AuthScaffold(
+      child: AutofillGroup(
+        child: Column(
+          // AuthScaffold 内禁用 Spacer，垂直居中用 mainAxisAlignment（§4 总则）。
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const SizedBox(height: 48),
+            const BrandMark(),
+            const SizedBox(height: 48),
+            Focus(
+              onFocusChange: (hasFocus) {
+                if (!hasFocus) _validateAccountOnBlur();
+              },
+              child: AppTextField(
+                label: '用户名 / 手机号',
+                controller: _accountCtrl,
+                prefixIcon: Icons.person_outline_rounded,
+                errorText: _accountError,
+                enabled: !_submitting,
+                keyboardType: TextInputType.text,
+                textInputAction: TextInputAction.next,
+                autofillHints: const [AutofillHints.username],
+                onChanged: (_) => _clearErrors(field: _Field.account),
+              ),
+            ),
+            const SizedBox(height: 16),
+            Focus(
+              onFocusChange: (hasFocus) {
+                if (!hasFocus) _validatePasswordOnBlur();
+              },
+              child: AppTextField(
+                label: '密码',
+                controller: _passwordCtrl,
+                prefixIcon: Icons.lock_outline_rounded,
+                obscurable: true,
+                errorText: _passwordError,
+                enabled: !_submitting,
+                textInputAction: TextInputAction.done,
+                autofillHints: const [AutofillHints.password],
+                onChanged: (_) => _clearErrors(field: _Field.password),
+                onSubmitted: (_) => _submit(),
+              ),
+            ),
+            if (_formError != null) ...[
+              const SizedBox(height: 16),
+              InlineErrorBanner(message: _formError!),
+            ],
+            const SizedBox(height: 24),
+            PrimaryButton(
+              label: '登录',
+              isLoading: _submitting,
+              onPressed: _submit,
+            ),
+            const SizedBox(height: 16),
+            Row(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                const Text(
+                  '还没有账号？',
+                  style: TextStyle(color: AppColors.muted, fontSize: 14),
+                ),
+                TextButton(
+                  style: TextButton.styleFrom(
+                    foregroundColor: AppColors.primaryStrong,
+                    minimumSize: const Size(44, 44),
+                    padding: const EdgeInsets.symmetric(horizontal: 8),
+                    textStyle: const TextStyle(
+                      fontSize: 14,
+                      fontWeight: FontWeight.w700,
+                    ),
+                  ),
+                  onPressed: _submitting ? null : _goRegister,
+                  child: const Text('立即注册'),
+                ),
+              ],
+            ),
+            const SizedBox(height: 24),
+            // 协议行：v1 协议页未就绪，整行不渲染（组装稿 §5）。
+            // 预留区（短信验证码/第三方登录）：不渲染任何占位（ADR-004）。
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/features/auth/register_page.dart

@@ -0,0 +1,319 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/semantics.dart';
+import 'package:flutter/services.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/app_text_field.dart';
+import 'package:patbond_flutter/core/widgets/auth_scaffold.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/primary_button.dart';
+import 'package:patbond_flutter/features/auth/auth_repository.dart';
+
+enum _Field { username, phone, password, confirm }
+
+/// 注册页（12 号组装稿 §6）。字段按 ADR-004：用户名 + 手机号 + 密码 + 确认密码；
+/// 短信验证码行与第三方登录预留区一律不渲染。注册成功即建立会话直接进首页。
+class RegisterPage extends StatefulWidget {
+  const RegisterPage({required this.authRepository, super.key});
+
+  final AuthRepository authRepository;
+
+  @override
+  State<RegisterPage> createState() => _RegisterPageState();
+}
+
+class _RegisterPageState extends State<RegisterPage> {
+  static final _usernamePattern = RegExp(r'^[A-Za-z][A-Za-z0-9_]{2,19}$');
+  static final _phonePattern = RegExp(r'^1\d{10}$');
+
+  final _usernameCtrl = TextEditingController();
+  final _phoneCtrl = TextEditingController();
+  final _passwordCtrl = TextEditingController();
+  final _confirmCtrl = TextEditingController();
+  String? _usernameError;
+  String? _phoneError;
+  String? _passwordError;
+  String? _confirmError;
+  String? _formError;
+  bool _submitting = false;
+
+  @override
+  void dispose() {
+    _usernameCtrl.dispose();
+    _phoneCtrl.dispose();
+    _passwordCtrl.dispose();
+    _confirmCtrl.dispose();
+    super.dispose();
+  }
+
+  String? _validateUsernameValue() {
+    final value = _usernameCtrl.text.trim();
+    if (value.isEmpty) return '请输入用户名';
+    if (!_usernamePattern.hasMatch(value)) {
+      return '用户名需 3–20 位，字母开头，可含数字和下划线';
+    }
+    return null;
+  }
+
+  String? _validatePhoneValue() {
+    final value = _phoneCtrl.text.trim();
+    if (value.isEmpty) return '请输入手机号';
+    if (!_phonePattern.hasMatch(value)) return '请输入正确的 11 位手机号';
+    return null;
+  }
+
+  String? _validatePasswordValue() {
+    final value = _passwordCtrl.text;
+    final lengthOk = value.length >= 8 && value.length <= 32;
+    final hasLetter = value.contains(RegExp('[A-Za-z]'));
+    final hasDigit = value.contains(RegExp('[0-9]'));
+    if (!lengthOk || !hasLetter || !hasDigit) {
+      return '密码需 8–32 位，且同时包含字母和数字';
+    }
+    return null;
+  }
+
+  String? _validateConfirmValue() =>
+      _confirmCtrl.text == _passwordCtrl.text ? null : '两次输入的密码不一致';
+
+  void _validateOnBlur(_Field field) {
+    if (!mounted) return;
+    setState(() {
+      switch (field) {
+        case _Field.username:
+          _usernameError = _validateUsernameValue();
+        case _Field.phone:
+          _phoneError = _validatePhoneValue();
+        case _Field.password:
+          _passwordError = _validatePasswordValue();
+        case _Field.confirm:
+          _confirmError = _validateConfirmValue();
+      }
+    });
+  }
+
+  /// 字段变更清除本字段错误与横幅；密码变更时若确认密码已有值，
+  /// 同步重校验一致性（组装稿 §6）。
+  void _clearError(_Field field) {
+    setState(() {
+      _formError = null;
+      switch (field) {
+        case _Field.username:
+          _usernameError = null;
+        case _Field.phone:
+          _phoneError = null;
+        case _Field.password:
+          _passwordError = null;
+          if (_confirmCtrl.text.isNotEmpty) {
+            _confirmError = _validateConfirmValue();
+          }
+        case _Field.confirm:
+          _confirmError = null;
+      }
+    });
+  }
+
+  void _showFormError(String message) {
+    setState(() => _formError = message);
+    SemanticsService.sendAnnouncement(
+      View.of(context),
+      message,
+      TextDirection.ltr,
+    );
+  }
+
+  Future<void> _submit() async {
+    if (_submitting) return;
+    final usernameError = _validateUsernameValue();
+    final phoneError = _validatePhoneValue();
+    final passwordError = _validatePasswordValue();
+    final confirmError = _validateConfirmValue();
+    if (usernameError != null ||
+        phoneError != null ||
+        passwordError != null ||
+        confirmError != null) {
+      setState(() {
+        _usernameError = usernameError;
+        _phoneError = phoneError;
+        _passwordError = passwordError;
+        _confirmError = confirmError;
+      });
+      return;
+    }
+    setState(() {
+      _submitting = true;
+      _formError = null;
+    });
+    try {
+      await widget.authRepository.register(
+        username: _usernameCtrl.text.trim(),
+        phone: '+86${_phoneCtrl.text.trim()}',
+        password: _passwordCtrl.text,
+      );
+      TextInput.finishAutofillContext();
+      if (!mounted) return;
+      // 会话已建立，根路由切主壳；弹掉注册页露出新首页，不回登录页。
+      Navigator.of(context).popUntil((route) => route.isFirst);
+    } on ApiBusinessException catch (error) {
+      if (!mounted) return;
+      switch (error.code) {
+        case ApiCodes.usernameTaken:
+          setState(() => _usernameError = '该用户名已被使用');
+        case ApiCodes.phoneTaken:
+          setState(() => _phoneError = '该手机号已注册，可直接登录');
+        default:
+          _showFormError('注册失败，请稍后重试');
+      }
+    } on ApiRateLimitException {
+      if (!mounted) return;
+      _showFormError('尝试次数过多，请稍后再试');
+    } on ApiNetworkException {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: const Text('网络异常，请检查网络后重试'),
+          action: SnackBarAction(label: '重试', onPressed: _submit),
+        ),
+      );
+    } on SessionExpiredException {
+      // 注册请求不带会话，理论不可达。
+    } finally {
+      if (mounted) setState(() => _submitting = false);
+    }
+  }
+
+  Widget _blurValidated(_Field field, Widget child) {
+    return Focus(
+      onFocusChange: (hasFocus) {
+        if (!hasFocus) _validateOnBlur(field);
+      },
+      child: child,
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AuthScaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        scrolledUnderElevation: 0,
+        foregroundColor: AppColors.ink,
+      ),
+      child: AutofillGroup(
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            const SizedBox(height: 8),
+            Text('创建账号', style: Theme.of(context).textTheme.headlineSmall),
+            const SizedBox(height: 8),
+            Text(
+              '加入 Patbond，记录毛孩子的每一天',
+              style: Theme.of(context).textTheme.bodySmall,
+            ),
+            const SizedBox(height: 32),
+            _blurValidated(
+              _Field.username,
+              AppTextField(
+                label: '用户名',
+                controller: _usernameCtrl,
+                prefixIcon: Icons.person_outline_rounded,
+                errorText: _usernameError,
+                enabled: !_submitting,
+                textInputAction: TextInputAction.next,
+                autofillHints: const [AutofillHints.newUsername],
+                onChanged: (_) => _clearError(_Field.username),
+              ),
+            ),
+            const SizedBox(height: 16),
+            _blurValidated(
+              _Field.phone,
+              AppTextField(
+                label: '手机号',
+                controller: _phoneCtrl,
+                prefixIcon: Icons.phone_iphone_rounded,
+                prefixText: '+86 ',
+                errorText: _phoneError,
+                enabled: !_submitting,
+                keyboardType: TextInputType.phone,
+                textInputAction: TextInputAction.next,
+                autofillHints: const [AutofillHints.telephoneNumber],
+                onChanged: (_) => _clearError(_Field.phone),
+              ),
+            ),
+            const SizedBox(height: 16),
+            _blurValidated(
+              _Field.password,
+              AppTextField(
+                label: '密码',
+                controller: _passwordCtrl,
+                prefixIcon: Icons.lock_outline_rounded,
+                obscurable: true,
+                errorText: _passwordError,
+                helperText: '密码 8–32 位，需包含字母和数字',
+                enabled: !_submitting,
+                textInputAction: TextInputAction.next,
+                autofillHints: const [AutofillHints.newPassword],
+                onChanged: (_) => _clearError(_Field.password),
+              ),
+            ),
+            const SizedBox(height: 16),
+            _blurValidated(
+              _Field.confirm,
+              AppTextField(
+                label: '确认密码',
+                controller: _confirmCtrl,
+                prefixIcon: Icons.lock_outline_rounded,
+                obscurable: true,
+                errorText: _confirmError,
+                enabled: !_submitting,
+                textInputAction: TextInputAction.done,
+                autofillHints: const [AutofillHints.newPassword],
+                onChanged: (_) => _clearError(_Field.confirm),
+                onSubmitted: (_) => _submit(),
+              ),
+            ),
+            if (_formError != null) ...[
+              const SizedBox(height: 16),
+              InlineErrorBanner(message: _formError!),
+            ],
+            const SizedBox(height: 32),
+            PrimaryButton(
+              label: '注册',
+              isLoading: _submitting,
+              onPressed: _submit,
+            ),
+            const SizedBox(height: 16),
+            Center(
+              child: Row(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  const Text(
+                    '已有账号？',
+                    style: TextStyle(color: AppColors.muted, fontSize: 14),
+                  ),
+                  TextButton(
+                    style: TextButton.styleFrom(
+                      foregroundColor: AppColors.primaryStrong,
+                      minimumSize: const Size(44, 44),
+                      padding: const EdgeInsets.symmetric(horizontal: 8),
+                      textStyle: const TextStyle(
+                        fontSize: 14,
+                        fontWeight: FontWeight.w700,
+                      ),
+                    ),
+                    onPressed: _submitting
+                        ? null
+                        : () => Navigator.of(context).pop(),
+                    child: const Text('直接登录'),
+                  ),
+                ],
+              ),
+            ),
+            const SizedBox(height: 24),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/features/auth/session_manager.dart

@@ -0,0 +1,159 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:patbond_flutter/features/auth/auth_models.dart';
+import 'package:uuid/uuid.dart';
+
+/// 认证状态机：unknown（启动恢复中，停留 Splash）→ authenticated / unauthenticated。
+enum AuthStatus { unknown, authenticated, unauthenticated }
+
+/// token 持久化抽象。生产实现走系统安全存储（Keychain / Keystore），
+/// 测试注入内存实现。token 绝不写入 SharedPreferences（开发计划 §4.2）。
+abstract class TokenStore {
+  Future<String?> read(String key);
+  Future<void> write(String key, String value);
+  Future<void> delete(String key);
+}
+
+/// 基于 flutter_secure_storage 的生产实现。
+class SecureTokenStore implements TokenStore {
+  const SecureTokenStore([this._storage = const FlutterSecureStorage()]);
+
+  final FlutterSecureStorage _storage;
+
+  @override
+  Future<String?> read(String key) => _storage.read(key: key);
+
+  @override
+  Future<void> write(String key, String value) =>
+      _storage.write(key: key, value: value);
+
+  @override
+  Future<void> delete(String key) => _storage.delete(key: key);
+}
+
+/// 会话管理：token 的内存副本 + 安全存储持久化 + 认证状态广播。
+///
+/// 状态变更只通过 [saveSession]（登录/注册成功）、[markAuthenticated] /
+/// [markUnauthenticated]（Splash 恢复裁决）与 [clearSession]（登出/会话失效）。
+/// TokenRefresher 轮换 token 用 [updateTokens]，不改状态——
+/// Splash 需要在最短停留时间后才切页（12 号组装稿 §7）。
+class SessionManager extends ChangeNotifier {
+  SessionManager({required this._store, this._uuid = const Uuid()});
+
+  static const _accessTokenKey = 'patbond_access_token';
+  static const _refreshTokenKey = 'patbond_refresh_token';
+  static const _accessExpiresKey = 'patbond_access_token_expires_at';
+  static const _refreshExpiresKey = 'patbond_refresh_token_expires_at';
+  static const _userIdKey = 'patbond_user_id';
+  static const _deviceIdKey = 'patbond_device_id';
+
+  final TokenStore _store;
+  final Uuid _uuid;
+
+  AuthStatus _status = AuthStatus.unknown;
+  String? _accessToken;
+  String? _refreshToken;
+  String? _userId;
+  String? _deviceId;
+  bool _loaded = false;
+
+  AuthStatus get status => _status;
+  String? get accessToken => _accessToken;
+  String? get refreshToken => _refreshToken;
+  String? get userId => _userId;
+
+  /// 设备标识：首次生成 UUID 并持久化，跨会话稳定。
+  String? get deviceId => _deviceId;
+
+  /// 从安全存储载入 token 到内存（幂等）。存储读取失败按无会话处理，
+  /// 不阻塞启动。
+  Future<void> loadFromStorage() async {
+    if (_loaded) return;
+    _accessToken = await _readOrNull(_accessTokenKey);
+    _refreshToken = await _readOrNull(_refreshTokenKey);
+    _userId = await _readOrNull(_userIdKey);
+    _deviceId = await _readOrNull(_deviceIdKey);
+    if (_deviceId == null) {
+      _deviceId = _uuid.v4();
+      await _writeQuietly(_deviceIdKey, _deviceId!);
+    }
+    _loaded = true;
+  }
+
+  /// 登录/注册成功：持久化整套 token 并进入已认证态。
+  Future<void> saveSession(AuthTokens tokens) async {
+    await updateTokens(tokens);
+    _status = AuthStatus.authenticated;
+    notifyListeners();
+  }
+
+  /// 仅写入/轮换 token，不改变认证状态（刷新流程用）。
+  Future<void> updateTokens(AuthTokens tokens) async {
+    _accessToken = tokens.accessToken;
+    _refreshToken = tokens.refreshToken;
+    _userId = tokens.userId;
+    _loaded = true;
+    await _writeQuietly(_accessTokenKey, tokens.accessToken);
+    await _writeQuietly(_refreshTokenKey, tokens.refreshToken);
+    await _writeQuietly(
+      _accessExpiresKey,
+      tokens.accessTokenExpiresAt.toIso8601String(),
+    );
+    await _writeQuietly(
+      _refreshExpiresKey,
+      tokens.refreshTokenExpiresAt.toIso8601String(),
+    );
+    await _writeQuietly(_userIdKey, tokens.userId);
+  }
+
+  /// Splash 恢复成功后的显式切态。
+  void markAuthenticated() {
+    _status = AuthStatus.authenticated;
+    notifyListeners();
+  }
+
+  /// 无本地会话或用户选择改用账号登录。
+  void markUnauthenticated() {
+    _status = AuthStatus.unauthenticated;
+    notifyListeners();
+  }
+
+  /// 清除会话（登出 / refresh 失效）。设备标识保留。
+  Future<void> clearSession() async {
+    _accessToken = null;
+    _refreshToken = null;
+    _userId = null;
+    _status = AuthStatus.unauthenticated;
+    notifyListeners();
+    for (final key in const [
+      _accessTokenKey,
+      _refreshTokenKey,
+      _accessExpiresKey,
+      _refreshExpiresKey,
+      _userIdKey,
+    ]) {
+      try {
+        await _store.delete(key);
+      } catch (error) {
+        debugPrint('清除会话存储失败（$key）：$error');
+      }
+    }
+  }
+
+  Future<String?> _readOrNull(String key) async {
+    try {
+      return await _store.read(key);
+    } catch (error) {
+      debugPrint('读取安全存储失败（$key）：$error');
+      return null;
+    }
+  }
+
+  Future<void> _writeQuietly(String key, String value) async {
+    try {
+      await _store.write(key, value);
+    } catch (error) {
+      debugPrint('写入安全存储失败（$key）：$error');
+    }
+  }
+}

lib/features/auth/splash_page.dart

@@ -0,0 +1,147 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/brand_mark.dart';
+import 'package:patbond_flutter/features/auth/auth_repository.dart';
+import 'package:patbond_flutter/features/auth/session_manager.dart';
+
+enum _SplashState { checking, failed }
+
+/// 启动 Splash（12 号组装稿 §7）：静默恢复会话。
+///
+/// 流程约束：最短停留 500ms；刷新超时 5s；spinner 等待超过 300ms 才出现；
+/// 网络失败不清除本地 refresh token（只有服务端明确 401/40102 才清）。
+class SplashPage extends StatefulWidget {
+  const SplashPage({
+    required this.authRepository,
+    required this.sessionManager,
+    super.key,
+  });
+
+  final AuthRepository authRepository;
+  final SessionManager sessionManager;
+
+  @override
+  State<SplashPage> createState() => _SplashPageState();
+}
+
+class _SplashPageState extends State<SplashPage> {
+  _SplashState _state = _SplashState.checking;
+  bool _showSpinner = false;
+  Timer? _spinnerTimer;
+
+  @override
+  void initState() {
+    super.initState();
+    _restore();
+  }
+
+  @override
+  void dispose() {
+    _spinnerTimer?.cancel();
+    super.dispose();
+  }
+
+  Future<void> _restore() async {
+    _spinnerTimer?.cancel();
+    _spinnerTimer = Timer(const Duration(milliseconds: 300), () {
+      if (mounted) setState(() => _showSpinner = true);
+    });
+    final minStay = Future<void>.delayed(const Duration(milliseconds: 500));
+    try {
+      final result = await widget.authRepository.restoreSession().timeout(
+        const Duration(seconds: 5),
+      );
+      await minStay;
+      if (!mounted) return;
+      switch (result) {
+        case SessionRestoreResult.authenticated:
+          widget.sessionManager.markAuthenticated();
+        case SessionRestoreResult.noSession:
+          widget.sessionManager.markUnauthenticated();
+      }
+    } on SessionExpiredException {
+      // refresh 已被服务端判失效，会话已清、状态机已切换，无需处理。
+    } catch (_) {
+      // 网络失败 / 超时：token 保留，转错误态供重试。
+      await minStay;
+      if (!mounted) return;
+      setState(() {
+        _state = _SplashState.failed;
+        _showSpinner = false;
+      });
+    }
+  }
+
+  void _retryRefresh() {
+    setState(() {
+      _state = _SplashState.checking;
+      _showSpinner = false;
+    });
+    _restore();
+  }
+
+  Future<void> _clearCredentialsAndGoLogin() async {
+    // 逃生通道：放弃本地凭证，改用账号登录。
+    await widget.sessionManager.clearSession();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: AppColors.canvas,
+      body: Center(
+        child: _state == _SplashState.checking
+            ? Column(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  const BrandMark(),
+                  const SizedBox(height: 32),
+                  // 占位保高度，spinner 出现时不跳动。
+                  SizedBox.square(
+                    dimension: 20,
+                    child: _showSpinner
+                        ? const CircularProgressIndicator(
+                            strokeWidth: 2.5,
+                            color: AppColors.primary,
+                          )
+                        : null,
+                  ),
+                ],
+              )
+            : Column(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  const BrandMark(),
+                  const SizedBox(height: 24),
+                  const Text(
+                    '网络连接失败，无法恢复登录',
+                    style: TextStyle(color: AppColors.ink, fontSize: 14),
+                  ),
+                  const SizedBox(height: 16),
+                  OutlinedButton(
+                    style: OutlinedButton.styleFrom(
+                      minimumSize: const Size(120, 44),
+                      foregroundColor: AppColors.primaryStrong,
+                      side: const BorderSide(color: AppColors.border),
+                    ),
+                    onPressed: _retryRefresh,
+                    child: const Text('重试'),
+                  ),
+                  const SizedBox(height: 8),
+                  TextButton(
+                    style: TextButton.styleFrom(
+                      foregroundColor: AppColors.primaryStrong,
+                      minimumSize: const Size(44, 44),
+                    ),
+                    onPressed: _clearCredentialsAndGoLogin,
+                    child: const Text('改用账号登录'),
+                  ),
+                ],
+              ),
+      ),
+    );
+  }
+}

lib/features/community/community_controller.dart

@@ -0,0 +1,336 @@
+import 'package:flutter/foundation.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/features/community/community_interaction_analytics.dart';
+import 'package:patbond_flutter/features/community/community_models.dart';
+import 'package:patbond_flutter/features/community/community_repository.dart';
+import 'package:patbond_flutter/features/community/toggle_sync.dart';
+
+/// Feed 首屏四态（同 pets 先例）。
+enum FeedPhase { initial, loading, ready, error }
+
+/// 尾部加载更多三态（游标累积流新增，pets 无此并发点）。
+enum LoadMorePhase { idle, loading, error }
+
+/// community feature 状态控制器（03 号评估 §2 分层：
+/// Page/Widget → CommunityController → CommunityRepository → ApiClient）。
+///
+/// Tab 级单例（app.dart 装配注入主壳）：Feed 是游标累积流，且详情页与
+/// 首页共享同一份帖子内存副本（点赞状态跨页一致），不做页面级 state。
+/// 评论列表只属详情页，按「页面级状态按页自建」纪律经 [repository]
+/// 自取，不膨胀本控制器。服务端是唯一事实来源，内存副本仅作展示缓存。
+class CommunityController extends ChangeNotifier {
+  CommunityController({required this._repository, this._interactionAnalytics}) {
+    _likeSync = ToggleSync(
+      read: (id) {
+        final post = _postCache[id];
+        if (post != null) {
+          return ToggleReading(active: post.likedByMe, count: post.likeCount);
+        }
+        final card = _cardOrNull(id);
+        if (card == null) return null;
+        return ToggleReading(active: card.likedByMe, count: card.likeCount);
+      },
+      write: (id, active, count) =>
+          _writeInteraction(id, likedByMe: active, likeCount: count),
+      send: (id, target) async {
+        final state = target
+            ? await _repository.likePost(id)
+            : await _repository.unlikePost(id);
+        // 成功响应后上报（06 §1.4 口径；乐观翻转与失败均不报）。
+        final source = _likeSources[id] ?? InteractionSource.feed;
+        target
+            ? _interactionAnalytics?.postLiked(source: source)
+            : _interactionAnalytics?.postUnliked(source: source);
+        return ToggleOutcome(active: state.liked, count: state.likeCount);
+      },
+      generation: () => _generation,
+      onError: _onToggleError,
+    );
+    _bookmarkSync = ToggleSync(
+      read: (id) {
+        final post = _postCache[id];
+        if (post != null) {
+          return ToggleReading(
+            active: post.bookmarkedByMe,
+            count: post.bookmarkCount,
+          );
+        }
+        final card = _cardOrNull(id);
+        if (card == null) return null;
+        return ToggleReading(
+          active: card.bookmarkedByMe,
+          count: card.bookmarkCount,
+        );
+      },
+      write: (id, active, count) =>
+          _writeInteraction(id, bookmarkedByMe: active, bookmarkCount: count),
+      send: (id, target) async {
+        final state = target
+            ? await _repository.bookmarkPost(id)
+            : await _repository.unbookmarkPost(id);
+        final source = _bookmarkSources[id] ?? InteractionSource.feed;
+        target
+            ? _interactionAnalytics?.postFavorited(source: source)
+            : _interactionAnalytics?.postUnfavorited(source: source);
+        return ToggleOutcome(
+          active: state.bookmarked,
+          count: state.bookmarkCount,
+        );
+      },
+      generation: () => _generation,
+      onError: _onToggleError,
+    );
+  }
+
+  final CommunityRepository _repository;
+  final CommunityInteractionAnalytics? _interactionAnalytics;
+
+  /// 各帖最近一次 toggle 的触点来源（Feed 卡片 / 详情页共享同一实例，
+  /// 成功响应上报时按发起触点归因）。
+  final Map<String, InteractionSource> _likeSources = {};
+  final Map<String, InteractionSource> _bookmarkSources = {};
+
+  /// 页面级状态（评论列表、我的帖子、收藏页等）按页直接经仓库取数。
+  CommunityRepository get repository => _repository;
+
+  late final ToggleSync _likeSync;
+  late final ToggleSync _bookmarkSync;
+
+  FeedPhase _phase = FeedPhase.initial;
+  LoadMorePhase _loadMorePhase = LoadMorePhase.idle;
+  List<FeedCard> _feed = const [];
+  String? _nextCursor;
+  bool _hasMore = false;
+
+  /// 首屏加载失败（error 态时非 null）。
+  ApiException? _lastError;
+
+  /// 刷新失败但旧列表被保留时的错误（页面 SnackBar 轻提示后消费）。
+  ApiException? _refreshError;
+
+  /// 加载更多失败（尾部重试条渲染依据）。
+  ApiException? _loadMoreError;
+
+  /// 最近一次点赞/收藏对账失败（T3-15/16 SnackBar 消费）。
+  ApiException? _toggleError;
+
+  /// 刷新代次：整体替换列表后，在途旧代次响应（尾页 / 互动对账）一律丢弃。
+  int _generation = 0;
+
+  /// 详情内存副本（详情页与 Feed 卡片互动状态同源）。
+  final Map<String, Post> _postCache = {};
+
+  bool _disposed = false;
+
+  FeedPhase get phase => _phase;
+  LoadMorePhase get loadMorePhase => _loadMorePhase;
+
+  /// 累积的多页 Feed 缓存（服务端 published_at DESC, id DESC 原样保留）。
+  List<FeedCard> get feed => _feed;
+  bool get hasMore => _hasMore;
+
+  /// ready 且列表为空 → 空态。
+  bool get isEmpty => _phase == FeedPhase.ready && _feed.isEmpty;
+
+  ApiException? get lastError => _lastError;
+  ApiException? get refreshError => _refreshError;
+  ApiException? get loadMoreError => _loadMoreError;
+  ApiException? get toggleError => _toggleError;
+
+  /// 详情内存副本（进入详情页先渲染缓存，再 [getPost] 拉新）。
+  Post? cachedPost(String postId) => _postCache[postId];
+
+  /// 首屏加载 / 下拉刷新：丢弃游标从头拉第一页，成功后**整体替换**累积列表。
+  /// 刷新失败保留旧列表（不清空不闪空态），错误经 [refreshError] 轻提示；
+  /// 首屏（空列表）失败收敛为 error 态供页面渲染 + retry。
+  Future<void> refresh() async {
+    _generation += 1;
+    final generation = _generation;
+    _lastError = null;
+    _refreshError = null;
+    _loadMorePhase = LoadMorePhase.idle;
+    _loadMoreError = null;
+    if (_feed.isEmpty) _phase = FeedPhase.loading;
+    _notify();
+    try {
+      final page = await _repository.getFeed();
+      if (generation != _generation) return; // 期间又发生过刷新/登出。
+      _feed = page.items;
+      _nextCursor = page.nextCursor;
+      _hasMore = page.hasMore;
+      _phase = FeedPhase.ready;
+    } on ApiException catch (error) {
+      if (generation != _generation) return;
+      if (_feed.isEmpty) {
+        _lastError = error;
+        _phase = FeedPhase.error;
+      } else {
+        _refreshError = error;
+      }
+    }
+    _notify();
+  }
+
+  /// 滚动近底加载下一页：携带上一页 nextCursor（keyset 翻页不丢不重）。
+  /// 失败置 [LoadMorePhase.error] 渲染尾部重试条；期间发生过刷新的
+  /// 旧代次响应直接丢弃（避免「刷新后旧尾页追加」的重复/错位）。
+  Future<void> loadMore() async {
+    if (_phase != FeedPhase.ready ||
+        !_hasMore ||
+        _loadMorePhase == LoadMorePhase.loading) {
+      return;
+    }
+    final generation = _generation;
+    _loadMorePhase = LoadMorePhase.loading;
+    _loadMoreError = null;
+    _notify();
+    try {
+      final page = await _repository.getFeed(cursor: _nextCursor);
+      if (generation != _generation) return; // 旧代次尾页，丢弃。
+      _feed = [..._feed, ...page.items];
+      _nextCursor = page.nextCursor;
+      _hasMore = page.hasMore;
+      _loadMorePhase = LoadMorePhase.idle;
+    } on ApiException catch (error) {
+      if (generation != _generation) return;
+      _loadMoreError = error;
+      _loadMorePhase = LoadMorePhase.error;
+    }
+    _notify();
+  }
+
+  /// 拉取帖子详情并同步内存副本（Feed 卡片互动字段一并回写）。
+  Future<Post> getPost(String postId) async {
+    final post = await _repository.getPost(postId);
+    _postCache[postId] = post;
+    _syncCardFromPost(post);
+    _notify();
+    return post;
+  }
+
+  /// 点赞/取消点赞（乐观翻转，终态由 [ToggleSync] 对账收敛，不外抛）。
+  /// [source] 为触点来源（埋点归因），Feed 卡片缺省 feed、详情页传
+  /// post_detail。
+  void toggleLike(
+    String postId, {
+    InteractionSource source = InteractionSource.feed,
+  }) {
+    _likeSources[postId] = source;
+    _likeSync.toggle(postId);
+  }
+
+  /// 收藏/取消收藏（与点赞同构）。
+  void toggleBookmark(
+    String postId, {
+    InteractionSource source = InteractionSource.feed,
+  }) {
+    _bookmarkSources[postId] = source;
+    _bookmarkSync.toggle(postId);
+  }
+
+  /// 评论创建/删除后的计数调整（详情页与 Feed 卡片同源写入，
+  /// 服务端 comment_count 由写侧同事务维护，本地只做展示对齐）。
+  void adjustCommentCount(String postId, int delta) {
+    final current =
+        _postCache[postId]?.commentCount ?? _cardOrNull(postId)?.commentCount;
+    if (current == null) return;
+    final next = current + delta;
+    _writeInteraction(postId, commentCount: next < 0 ? 0 : next);
+  }
+
+  /// 消费一次性 toggle 错误（SnackBar 展示后清除）。
+  void clearToggleError() => _toggleError = null;
+
+  /// 登出清空：回 initial 态、清多页缓存与详情副本、丢弃全部在途链，
+  /// 避免上一账号数据跨会话泄漏；重登后主壳重建，Feed 页重新触发 [refresh]。
+  void reset() {
+    _generation += 1;
+    _phase = FeedPhase.initial;
+    _loadMorePhase = LoadMorePhase.idle;
+    _feed = const [];
+    _nextCursor = null;
+    _hasMore = false;
+    _lastError = null;
+    _refreshError = null;
+    _loadMoreError = null;
+    _toggleError = null;
+    _postCache.clear();
+    _likeSources.clear();
+    _bookmarkSources.clear();
+    _likeSync.reset();
+    _bookmarkSync.reset();
+    _notify();
+  }
+
+  FeedCard? _cardOrNull(String postId) {
+    for (final card in _feed) {
+      if (card.id == postId) return card;
+    }
+    return null;
+  }
+
+  /// 互动字段统一写入口：详情副本与 Feed 卡片同步更新后 notify（同帧反馈）。
+  void _writeInteraction(
+    String postId, {
+    bool? likedByMe,
+    int? likeCount,
+    bool? bookmarkedByMe,
+    int? bookmarkCount,
+    int? commentCount,
+  }) {
+    final post = _postCache[postId];
+    if (post != null) {
+      _postCache[postId] = post.copyWithInteraction(
+        likedByMe: likedByMe,
+        likeCount: likeCount,
+        bookmarkedByMe: bookmarkedByMe,
+        bookmarkCount: bookmarkCount,
+        commentCount: commentCount,
+      );
+    }
+    final index = _feed.indexWhere((card) => card.id == postId);
+    if (index != -1) {
+      _feed = [..._feed]
+        ..[index] = _feed[index].copyWithInteraction(
+          likedByMe: likedByMe,
+          likeCount: likeCount,
+          bookmarkedByMe: bookmarkedByMe,
+          bookmarkCount: bookmarkCount,
+          commentCount: commentCount,
+        );
+    }
+    if (post != null || index != -1) _notify();
+  }
+
+  void _syncCardFromPost(Post post) {
+    final index = _feed.indexWhere((card) => card.id == post.id);
+    if (index == -1) return;
+    _feed = [..._feed]
+      ..[index] = _feed[index].copyWithInteraction(
+        likedByMe: post.likedByMe,
+        likeCount: post.likeCount,
+        commentCount: post.commentCount,
+        bookmarkedByMe: post.bookmarkedByMe,
+        bookmarkCount: post.bookmarkCount,
+      );
+  }
+
+  void _onToggleError(String postId, Object error) {
+    if (error is ApiException) {
+      _toggleError = error;
+    } else {
+      _toggleError = ApiNetworkException('$error');
+    }
+    _notify();
+  }
+
+  void _notify() {
+    if (!_disposed) notifyListeners();
+  }
+
+  @override
+  void dispose() {
+    _disposed = true;
+    super.dispose();
+  }
+}

lib/features/community/community_display.dart

@@ -0,0 +1,59 @@
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/features/community/community_exceptions.dart';
+import 'package:patbond_flutter/features/community/community_models.dart';
+
+/// 降级作者（[AuthorSummary.isDegraded]，资料暂不可得或已注销）的
+/// 统一占位名（05 号规范：占位头像 + 默认名，客户端不做昵称回退拼装）。
+const degradedAuthorName = '宠友';
+
+/// 作者展示名：正常路径 nickname 恒非空（服务端已回退 username）；
+/// 降级形态统一 [degradedAuthorName]。
+String authorDisplayName(AuthorSummary author) =>
+    author.nickname ?? degradedAuthorName;
+
+/// Feed 卡片元信息的相对时间（正典「2 小时前」语言）。
+/// [now] 注入口供测试锁定时钟。
+String feedRelativeTime(DateTime time, {DateTime? now}) {
+  final reference = now ?? DateTime.now();
+  final difference = reference.difference(time.toLocal());
+  if (difference.inMinutes < 1) return '刚刚';
+  if (difference.inHours < 1) return '${difference.inMinutes} 分钟前';
+  if (difference.inDays < 1) return '${difference.inHours} 小时前';
+  if (difference.inDays < 7) return '${difference.inDays} 天前';
+  final local = time.toLocal();
+  if (local.year == reference.year) return '${local.month}月${local.day}日';
+  return '${local.year}年${local.month}月${local.day}日';
+}
+
+/// Feed 加载失败的用户话术（pets 域 petLoadErrorMessage 同构；
+/// 服务端原始 message 不上屏）。
+String feedLoadErrorMessage(ApiException? error) => switch (error) {
+  ApiNetworkException _ => '网络异常，请检查网络后重试',
+  ApiRateLimitException _ => '请求过于频繁，请稍后再试',
+  _ => '动态加载失败，请稍后重试',
+};
+
+/// 发布失败的用户话术（T3-17，三条关键语义各自可辨；服务端原始
+/// message 不上屏）：
+///
+/// - 40905 同键异 payload：提交标识已被页面重置，再点一次即可;
+/// - 42203 asset 未 ready：等图片传完再发;
+/// - 网络失败：可重试（同键重放，服务端不会重复建帖）。
+String postPublishErrorMessage(ApiException? error) => switch (error) {
+  IdempotencyMismatchException _ => '提交内容与上次重试不一致，已重置提交标识，请再点一次「发布」',
+  MediaNotReadyException _ => '有图片还没上传完成，请等图片就绪后再发布',
+  PostNotFoundException _ => '草稿已不存在（可能已在别处删除），请重新发布',
+  PostVersionConflictException _ => '草稿在别处被修改过，请重试发布',
+  ApiNetworkException _ => '网络异常，请检查网络后重试',
+  ApiRateLimitException _ => '请求过于频繁，请稍后再试',
+  ApiBusinessException(:final code) when code == ApiCodes.paramError =>
+    '内容不符合发布要求，请修改后重试',
+  _ => '发布失败，请稍后重试',
+};
+
+/// 草稿保存失败的用户话术（发布页 SnackBar）。
+String draftSaveErrorMessage(ApiException? error) => switch (error) {
+  ApiNetworkException _ => '网络异常，草稿未保存，请重试',
+  ApiRateLimitException _ => '请求过于频繁，请稍后再试',
+  _ => '草稿保存失败，请重试',
+};

lib/features/community/community_exceptions.dart

@@ -0,0 +1,102 @@
+import 'package:patbond_flutter/core/network/api_exception.dart';
+
+/// community / media 域类型化业务异常（契约 v1.3.0 定型的 9 个新错误码，
+/// 20 号收口报告 §1；40902 乐观锁与 pets 域共码，本域映射为独立类型）。
+/// 全部继承 [ApiBusinessException]，既有按基类捕获的通用错误处理不受影响。
+
+/// 40301：对可见帖子/评论无相应操作权限（改删他人已发布帖、
+/// 删他人可见评论——含帖主删他人评论，D3-7 首版不做）。
+final class PostAccessDeniedException extends ApiBusinessException {
+  const PostAccessDeniedException({required super.message})
+    : super(code: ApiCodes.postAccessDenied);
+}
+
+/// 40403：帖子不存在 / 已软删 / hidden/archived（含作者）/ 他人 draft
+/// （防枚举，全部情况响应完全一致；互动路径上含作者本人草稿）。
+final class PostNotFoundException extends ApiBusinessException {
+  const PostNotFoundException({required super.message})
+    : super(code: ApiCodes.postNotFound);
+}
+
+/// 40404：评论不存在、已删或所属帖子不可见（防枚举合并）。
+final class CommentNotFoundException extends ApiBusinessException {
+  const CommentNotFoundException({required super.message})
+    : super(code: ApiCodes.commentNotFound);
+}
+
+/// 40405：media asset 不存在、非本人所有或已删（防枚举合并）。
+final class MediaAssetNotFoundException extends ApiBusinessException {
+  const MediaAssetNotFoundException({required super.message})
+    : super(code: ApiCodes.mediaNotFound);
+}
+
+/// 40406：目标用户不存在或已注销（合并不泄露成因）。
+final class CommunityUserNotFoundException extends ApiBusinessException {
+  const CommunityUserNotFoundException({required super.message})
+    : super(code: ApiCodes.communityUserNotFound);
+}
+
+/// 40902：帖子编辑乐观锁版本冲突（version 过期）。
+/// 客户端处理：刷新详情取新 version 后重提。
+final class PostVersionConflictException extends ApiBusinessException {
+  const PostVersionConflictException({required super.message})
+    : super(code: ApiCodes.versionConflict);
+}
+
+/// 40905：同 Idempotency-Key 不同 payload（规范化 request_hash 不符）。
+/// 客户端每次逻辑提交应换新键，重试间保持不变。
+final class IdempotencyMismatchException extends ApiBusinessException {
+  const IdempotencyMismatchException({required super.message})
+    : super(code: ApiCodes.idempotencyKeyMismatch);
+}
+
+/// 42203：引用了本人所有但非 ready（uploading/failed）状态的 asset。
+final class MediaNotReadyException extends ApiBusinessException {
+  const MediaNotReadyException({required super.message})
+    : super(code: ApiCodes.mediaNotReady);
+}
+
+/// 42204：自关注（仅 PUT；自取关走 DELETE 的 200 幂等 no-op）。
+final class SelfFollowException extends ApiBusinessException {
+  const SelfFollowException({required super.message})
+    : super(code: ApiCodes.selfFollow);
+}
+
+/// 42205：上传状态不允许确认——对象未上传（保持 uploading 可重试）、
+/// 大小/类型不符（置 failed 终态）、failed 态再确认（已 ready 幂等 200 除外）。
+final class MediaUploadStateException extends ApiBusinessException {
+  const MediaUploadStateException({required super.message})
+    : super(code: ApiCodes.mediaUploadStateInvalid);
+}
+
+/// 把通用业务异常按 community/media 域错误码升格为类型化异常；
+/// 未覆盖的码（40000 参数错误、40401 宠物防枚举等）原样返回，沿用通用处理。
+ApiBusinessException mapCommunityBusinessException(ApiBusinessException error) {
+  return switch (error.code) {
+    ApiCodes.postAccessDenied => PostAccessDeniedException(
+      message: error.message,
+    ),
+    ApiCodes.postNotFound => PostNotFoundException(message: error.message),
+    ApiCodes.commentNotFound => CommentNotFoundException(
+      message: error.message,
+    ),
+    ApiCodes.mediaNotFound => MediaAssetNotFoundException(
+      message: error.message,
+    ),
+    ApiCodes.communityUserNotFound => CommunityUserNotFoundException(
+      message: error.message,
+    ),
+    ApiCodes.versionConflict => PostVersionConflictException(
+      message: error.message,
+    ),
+    ApiCodes.idempotencyKeyMismatch => IdempotencyMismatchException(
+      message: error.message,
+    ),
+    ApiCodes.mediaNotReady => MediaNotReadyException(message: error.message),
+    ApiCodes.selfFollow => SelfFollowException(message: error.message),
+    ApiCodes.mediaUploadStateInvalid => MediaUploadStateException(
+      message: error.message,
+    ),
+    _ => error,
+  };
+}

lib/features/community/community_interaction_analytics.dart

@@ -0,0 +1,137 @@
+import 'package:patbond_flutter/analytics/page_view_tracker.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+
+/// 互动域埋点强类型封装（06 号规划 §1.4 字典 v3 互动八事件；后端白名单
+/// 已随 api dev@8089c06 就绪，22 号报告 §1）。沿 pet/feed 域惯例：枚举
+/// 编译期锁死，业务代码禁止手拼事件名与属性；只记行为不记内容
+/// （隐私红线：postId/commentId 等内容 ID 一律不进 props）。
+///
+/// 点赞/收藏/关注**不埋失败**（06 §1.4 取舍：幂等写入单点交互，失败率
+/// 靠服务端错误率观测）；`comment_create_started` 被字典锁死 unknown，
+/// 不得上报（22 号 §1 末段）。
+
+/// 互动触点来源（06 §1.4 source 枚举）。M3 接 feed / post_detail；
+/// user_profile / follow_list 随后续页面启用。
+enum InteractionSource {
+  feed('feed'),
+  postDetail('post_detail'),
+  userProfile('user_profile'),
+  followList('follow_list');
+
+  const InteractionSource(this.value);
+
+  final String value;
+}
+
+/// 评论创建失败原因（06 §1.4 失败枚举基底）。网络归并口径同 pet/feed 域：
+/// 断网/超时/5xx 均并入 network_error，server_error 保留兜底。
+enum CommentCreateFailureReason {
+  validationError('validation_error'),
+  notFound('not_found'),
+  rateLimited('rate_limited'),
+  networkError('network_error'),
+  serverError('server_error');
+
+  const CommentCreateFailureReason(this.value);
+
+  final String value;
+}
+
+/// 类型化异常 → 评论失败原因；会话失效返回 null（应用即将回登录页，
+/// 不作为评论失败上报，feed 域同款口径）。
+CommentCreateFailureReason? commentCreateFailureReasonOf(ApiException error) =>
+    switch (error) {
+      ApiNetworkException _ => CommentCreateFailureReason.networkError,
+      ApiRateLimitException _ => CommentCreateFailureReason.rateLimited,
+      SessionExpiredException _ => null,
+      ApiBusinessException(:final code) => switch (code) {
+        ApiCodes.paramError => CommentCreateFailureReason.validationError,
+        ApiCodes.postNotFound ||
+        ApiCodes.commentNotFound ||
+        ApiCodes.communityUserNotFound => CommentCreateFailureReason.notFound,
+        _ => CommentCreateFailureReason.serverError,
+      },
+    };
+
+/// 正文规模分桶（06 §1.3 隐私红线 1：不报精确字数）。
+/// empty / short(≤50) / medium(51–500) / long(>500)。
+String textLengthBucketOf(int length) {
+  if (length <= 0) return 'empty';
+  if (length <= 50) return 'short';
+  if (length <= 500) return 'medium';
+  return 'long';
+}
+
+class CommunityInteractionAnalytics {
+  CommunityInteractionAnalytics(this._track);
+
+  /// 生产传 `AnalyticsService.trackEvent`，测试传录制桩。
+  final TrackEventFn _track;
+
+  /// 点赞成功响应后（乐观翻转本身不报；单飞合并链每个实际抵达服务端
+  /// 并成功的状态变更各报一条，与「成功响应后」的字典口径一致）。
+  void postLiked({required InteractionSource source}) {
+    _track('post_liked', {'source': source.value});
+  }
+
+  /// 取消点赞成功响应后。
+  void postUnliked({required InteractionSource source}) {
+    _track('post_unliked', {'source': source.value});
+  }
+
+  /// 收藏成功响应后。
+  void postFavorited({required InteractionSource source}) {
+    _track('post_favorited', {'source': source.value});
+  }
+
+  /// 取消收藏成功响应后。
+  void postUnfavorited({required InteractionSource source}) {
+    _track('post_unfavorited', {'source': source.value});
+  }
+
+  /// 评论提交成功响应后。
+  ///
+  /// [durationMs]：本次输入会话（首个字符输入）→ 成功响应的耗时
+  /// （评论不设 started 事件，时长随成功事件带出）；
+  /// [textLength] 经 [textLengthBucketOf] 分桶后上报，精确字数不出端。
+  void commentCreateSucceeded({
+    required int durationMs,
+    required bool isReply,
+    required int textLength,
+  }) {
+    _track('comment_create_succeeded', {
+      'durationMs': durationMs,
+      'isReply': isReply,
+      'textLengthBucket': textLengthBucketOf(textLength),
+    });
+  }
+
+  /// 评论提交失败。
+  ///
+  /// [errorCode] 为业务错误码（网络错误时缺席）；[httpStatus] 由五位
+  /// 业务码推导（`code ~/ 100`，pet 域同款口径）；[attemptSeq] 为本次
+  /// 输入会话内第几次提交尝试（从 1 起，成功或清空输入后重置）。
+  void commentCreateFailed({
+    required CommentCreateFailureReason reason,
+    required int attemptSeq,
+    int? errorCode,
+  }) {
+    _track('comment_create_failed', {
+      'failureReason': reason.value,
+      'attemptSeq': attemptSeq,
+      'errorCode': ?errorCode,
+      if (errorCode != null && errorCode >= 10000)
+        'httpStatus': errorCode ~/ 100,
+    });
+  }
+
+  /// 关注成功响应后。
+  void userFollowed({required InteractionSource source}) {
+    _track('user_followed', {'source': source.value});
+  }
+
+  /// 取关成功响应后。
+  void userUnfollowed({required InteractionSource source}) {
+    _track('user_unfollowed', {'source': source.value});
+  }
+}

lib/features/community/community_models.dart

@@ -0,0 +1,630 @@
+/// community / media 域响应 / 请求模型（接口契约冻结稿 openapi.yaml v1.3.0，
+/// 字段名与后端逐字一致；枚举取值严格校验，未知值抛 [FormatException]
+/// 以便契约漂移在测试期暴露而非静默吞掉）。
+library;
+
+export 'package:patbond_flutter/core/models/cursor_page.dart';
+
+T _enumFromJson<T extends Enum>(List<T> values, String raw, String field) {
+  for (final value in values) {
+    if (value.name == raw) return value;
+  }
+  throw FormatException('未知的 $field 取值：$raw');
+}
+
+DateTime? _dateTimeOrNull(Object? value) =>
+    value == null ? null : DateTime.parse(value as String);
+
+/// 帖子分类。ai_creation 为 M4 预留值，仅读侧出现（M3 提交即 400/40000）。
+enum PostCategory {
+  general('general'),
+  help('help'),
+  aiCreation('ai_creation');
+
+  const PostCategory(this.wire);
+
+  /// 契约线上取值（aiCreation 的枚举名与线上 snake_case 不同，序列化走本值）。
+  final String wire;
+
+  static PostCategory fromJson(String value) {
+    for (final category in values) {
+      if (category.wire == value) return category;
+    }
+    throw FormatException('未知的 category 取值：$value');
+  }
+}
+
+/// 帖子状态。hidden/archived（运营态）永不出现在响应（对作者与他人一律
+/// 404/40403），枚举保持两值。
+enum PostStatus {
+  draft,
+  published;
+
+  static PostStatus fromJson(String value) =>
+      _enumFromJson(values, value, 'status');
+}
+
+/// 帖子可见性。M3 恒 public（followers/private 语义后置，字段保留）。
+enum PostVisibility {
+  public;
+
+  static PostVisibility fromJson(String value) =>
+      _enumFromJson(values, value, 'visibility');
+}
+
+/// media asset 类型。M3 仅 image（视频后置，video/document 为向后新增预留）。
+enum MediaKind {
+  image;
+
+  static MediaKind fromJson(String value) =>
+      _enumFromJson(values, value, 'kind');
+}
+
+/// 上传用途白名单（M3 定型仅 post_image，决定 objectKey 前缀）。
+enum MediaPurpose {
+  postImage('post_image');
+
+  const MediaPurpose(this.wire);
+
+  final String wire;
+}
+
+/// media asset 状态。deleted 态对外恒 404/40405，不出现在响应。
+enum MediaAssetStatus {
+  uploading,
+  ready,
+  failed;
+
+  static MediaAssetStatus fromJson(String value) =>
+      _enumFromJson(values, value, 'status');
+}
+
+/// 作者公开摘要（D3-9 方案 B）。正常路径 nickname 恒非空（空昵称由服务端
+/// 回退为 username，客户端不做回退拼装）；nickname 与 avatarUrl 同为 null
+/// 即「降级/墓碑」形态（作者资料暂不可得或已注销），客户端只需一种占位逻辑。
+class AuthorSummary {
+  const AuthorSummary({
+    required this.userId,
+    required this.nickname,
+    required this.avatarUrl,
+  });
+
+  factory AuthorSummary.fromJson(Map<String, dynamic> json) {
+    return AuthorSummary(
+      userId: json['userId'] as String,
+      nickname: json['nickname'] as String?,
+      // 时效性预签名 GET URL，每次响应现签，不得持久化、过期即重取。
+      avatarUrl: json['avatarUrl'] as String?,
+    );
+  }
+
+  final String userId;
+  final String? nickname;
+  final String? avatarUrl;
+
+  /// 降级/墓碑形态（id-only）：页面渲染统一占位。
+  bool get isDegraded => nickname == null && avatarUrl == null;
+}
+
+/// 帖子挂接的一张图（响应形态）。url 为时效性预签名 GET（TTL 默认 1 小时），
+/// 每次响应现签，客户端不得持久化、过期即重取。
+class PostMediaItem {
+  const PostMediaItem({
+    required this.assetId,
+    required this.position,
+    required this.isCover,
+    required this.url,
+    required this.widthPx,
+    required this.heightPx,
+    required this.caption,
+  });
+
+  factory PostMediaItem.fromJson(Map<String, dynamic> json) {
+    return PostMediaItem(
+      assetId: json['assetId'] as String,
+      position: json['position'] as int,
+      isCover: json['isCover'] as bool,
+      url: json['url'] as String,
+      widthPx: json['widthPx'] as int?,
+      heightPx: json['heightPx'] as int?,
+      caption: json['caption'] as String?,
+    );
+  }
+
+  final String assetId;
+  final int position;
+  final bool isCover;
+  final String url;
+  final int? widthPx;
+  final int? heightPx;
+  final String? caption;
+}
+
+/// 帖子挂接的一张图（请求形态）。position 全给或全不给（全给须恰为 0..n-1
+/// 连续不重复，混合 400/40000）；isCover 至多一个 true；caption trim 后 ≤300。
+class PostMediaAttachRequest {
+  const PostMediaAttachRequest({
+    required this.assetId,
+    this.position,
+    this.isCover,
+    this.caption,
+  });
+
+  final String assetId;
+  final int? position;
+  final bool? isCover;
+  final String? caption;
+
+  Map<String, Object?> toJson() => {
+    'assetId': assetId,
+    if (position != null) 'position': position,
+    if (isCover != null) 'isCover': isCover,
+    if (caption != null) 'caption': caption,
+  };
+}
+
+/// 创建帖子请求。content 必填（纯文字帖合法，media 空数组或缺席）；
+/// status=published 即创建即发布（服务端写 publishedAt）。
+class CreatePostRequest {
+  const CreatePostRequest({
+    required this.content,
+    this.title,
+    this.category,
+    this.status,
+    this.petId,
+    this.media,
+  });
+
+  final String content;
+  final String? title;
+  final PostCategory? category;
+  final PostStatus? status;
+  final String? petId;
+  final List<PostMediaAttachRequest>? media;
+
+  Map<String, Object?> toJson() => {
+    'content': content,
+    if (title != null) 'title': title,
+    if (category != null) 'category': category!.wire,
+    if (status != null) 'status': status!.name,
+    if (petId != null) 'petId': petId,
+    if (media != null) 'media': media!.map((item) => item.toJson()).toList(),
+  };
+}
+
+/// 编辑帖子 / 发布草稿请求（部分更新：缺席字段不变，不支持清空回 null；
+/// version 乐观锁必带）。
+///
+/// - [publish]：`status: published` 状态迁移（draft→published 唯一开放迁移；
+///   对已发布帖重复提交为幂等 no-op，弱网重发不报错）。
+/// - [media] 三态：null = 缺席不动；`[]` = 清空为纯文字帖；非空 = 整组替换。
+class UpdatePostRequest {
+  const UpdatePostRequest({
+    required this.version,
+    this.title,
+    this.content,
+    this.category,
+    this.petId,
+    this.publish = false,
+    this.media,
+  });
+
+  final int version;
+  final String? title;
+  final String? content;
+  final PostCategory? category;
+  final String? petId;
+  final bool publish;
+  final List<PostMediaAttachRequest>? media;
+
+  Map<String, Object?> toJson() => {
+    'version': version,
+    if (title != null) 'title': title,
+    if (content != null) 'content': content,
+    if (category != null) 'category': category!.wire,
+    if (petId != null) 'petId': petId,
+    if (publish) 'status': PostStatus.published.name,
+    if (media != null) 'media': media!.map((item) => item.toJson()).toList(),
+  };
+}
+
+/// 帖子完整形态（详情 / 我的帖子列表 / 写响应共用）。
+/// 「内容是否编辑过」以 version 为准（互动计数维护亦会推动 updatedAt）。
+class Post {
+  const Post({
+    required this.id,
+    required this.author,
+    required this.petId,
+    required this.category,
+    required this.title,
+    required this.content,
+    required this.status,
+    required this.visibility,
+    required this.media,
+    required this.likeCount,
+    required this.commentCount,
+    required this.bookmarkCount,
+    required this.likedByMe,
+    required this.bookmarkedByMe,
+    required this.createdAt,
+    required this.updatedAt,
+    required this.publishedAt,
+    required this.version,
+  });
+
+  factory Post.fromJson(Map<String, dynamic> json) {
+    return Post(
+      id: json['id'] as String,
+      author: AuthorSummary.fromJson(json['author'] as Map<String, dynamic>),
+      petId: json['petId'] as String?,
+      category: PostCategory.fromJson(json['category'] as String),
+      title: json['title'] as String?,
+      content: json['content'] as String,
+      status: PostStatus.fromJson(json['status'] as String),
+      visibility: PostVisibility.fromJson(json['visibility'] as String),
+      media: (json['media'] as List)
+          .map((item) => PostMediaItem.fromJson(item as Map<String, dynamic>))
+          .toList(),
+      likeCount: json['likeCount'] as int,
+      commentCount: json['commentCount'] as int,
+      bookmarkCount: json['bookmarkCount'] as int,
+      likedByMe: json['likedByMe'] as bool,
+      bookmarkedByMe: json['bookmarkedByMe'] as bool,
+      createdAt: DateTime.parse(json['createdAt'] as String),
+      updatedAt: DateTime.parse(json['updatedAt'] as String),
+      // 仅 published 非空（发布时恰写一次）。
+      publishedAt: _dateTimeOrNull(json['publishedAt']),
+      version: json['version'] as int,
+    );
+  }
+
+  final String id;
+  final AuthorSummary author;
+  final String? petId;
+  final PostCategory category;
+  final String? title;
+  final String content;
+  final PostStatus status;
+  final PostVisibility visibility;
+  final List<PostMediaItem> media;
+  final int likeCount;
+  final int commentCount;
+  final int bookmarkCount;
+  final bool likedByMe;
+  final bool bookmarkedByMe;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+  final DateTime? publishedAt;
+  final int version;
+
+  /// 互动字段副本更新（乐观翻转 / 权威终态对账用，其余字段不变）。
+  Post copyWithInteraction({
+    int? likeCount,
+    int? commentCount,
+    int? bookmarkCount,
+    bool? likedByMe,
+    bool? bookmarkedByMe,
+  }) {
+    return Post(
+      id: id,
+      author: author,
+      petId: petId,
+      category: category,
+      title: title,
+      content: content,
+      status: status,
+      visibility: visibility,
+      media: media,
+      likeCount: likeCount ?? this.likeCount,
+      commentCount: commentCount ?? this.commentCount,
+      bookmarkCount: bookmarkCount ?? this.bookmarkCount,
+      likedByMe: likedByMe ?? this.likedByMe,
+      bookmarkedByMe: bookmarkedByMe ?? this.bookmarkedByMe,
+      createdAt: createdAt,
+      updatedAt: updatedAt,
+      publishedAt: publishedAt,
+      version: version,
+    );
+  }
+}
+
+/// Feed / 收藏列表卡片形态（较 Post 裁剪：只带 coverImage + mediaCount，
+/// 全文恒走帖子详情端点）。publishedAt 恒非空（谓词只放行 published）。
+class FeedCard {
+  const FeedCard({
+    required this.id,
+    required this.author,
+    required this.category,
+    required this.title,
+    required this.contentPreview,
+    required this.coverImage,
+    required this.mediaCount,
+    required this.likeCount,
+    required this.commentCount,
+    required this.bookmarkCount,
+    required this.likedByMe,
+    required this.bookmarkedByMe,
+    required this.publishedAt,
+  });
+
+  factory FeedCard.fromJson(Map<String, dynamic> json) {
+    final cover = json['coverImage'];
+    return FeedCard(
+      id: json['id'] as String,
+      author: AuthorSummary.fromJson(json['author'] as Map<String, dynamic>),
+      category: PostCategory.fromJson(json['category'] as String),
+      title: json['title'] as String?,
+      contentPreview: json['contentPreview'] as String,
+      // 封面 = 库中唯一 is_cover 行；纯文字帖为 null。
+      coverImage: cover == null
+          ? null
+          : PostMediaItem.fromJson(cover as Map<String, dynamic>),
+      mediaCount: json['mediaCount'] as int,
+      likeCount: json['likeCount'] as int,
+      commentCount: json['commentCount'] as int,
+      bookmarkCount: json['bookmarkCount'] as int,
+      likedByMe: json['likedByMe'] as bool,
+      bookmarkedByMe: json['bookmarkedByMe'] as bool,
+      publishedAt: DateTime.parse(json['publishedAt'] as String),
+    );
+  }
+
+  final String id;
+  final AuthorSummary author;
+  final PostCategory category;
+  final String? title;
+  final String contentPreview;
+  final PostMediaItem? coverImage;
+  final int mediaCount;
+  final int likeCount;
+  final int commentCount;
+  final int bookmarkCount;
+  final bool likedByMe;
+  final bool bookmarkedByMe;
+  final DateTime publishedAt;
+
+  /// 互动字段副本更新（乐观翻转 / 权威终态对账用，其余字段不变）。
+  FeedCard copyWithInteraction({
+    int? likeCount,
+    int? commentCount,
+    int? bookmarkCount,
+    bool? likedByMe,
+    bool? bookmarkedByMe,
+  }) {
+    return FeedCard(
+      id: id,
+      author: author,
+      category: category,
+      title: title,
+      contentPreview: contentPreview,
+      coverImage: coverImage,
+      mediaCount: mediaCount,
+      likeCount: likeCount ?? this.likeCount,
+      commentCount: commentCount ?? this.commentCount,
+      bookmarkCount: bookmarkCount ?? this.bookmarkCount,
+      likedByMe: likedByMe ?? this.likedByMe,
+      bookmarkedByMe: bookmarkedByMe ?? this.bookmarkedByMe,
+      publishedAt: publishedAt,
+    );
+  }
+}
+
+/// 创建评论请求。content trim 后 1~2000；replyToUserId 可选 @ 回复目标
+/// （单层平铺，无楼中楼）。
+class CreateCommentRequest {
+  const CreateCommentRequest({required this.content, this.replyToUserId});
+
+  final String content;
+  final String? replyToUserId;
+
+  Map<String, Object?> toJson() => {
+    'content': content,
+    if (replyToUserId != null) 'replyToUserId': replyToUserId,
+  };
+}
+
+/// 评论（M3 无评论编辑，不带 updatedAt）。
+class PostComment {
+  const PostComment({
+    required this.id,
+    required this.postId,
+    required this.author,
+    required this.replyToUser,
+    required this.content,
+    required this.createdAt,
+  });
+
+  factory PostComment.fromJson(Map<String, dynamic> json) {
+    final replyTo = json['replyToUser'];
+    return PostComment(
+      id: json['id'] as String,
+      postId: json['postId'] as String,
+      author: AuthorSummary.fromJson(json['author'] as Map<String, dynamic>),
+      // @ 回复目标公开摘要（含降级 id-only 形态）；非回复为 null。
+      replyToUser: replyTo == null
+          ? null
+          : AuthorSummary.fromJson(replyTo as Map<String, dynamic>),
+      content: json['content'] as String,
+      createdAt: DateTime.parse(json['createdAt'] as String),
+    );
+  }
+
+  final String id;
+  final String postId;
+  final AuthorSummary author;
+  final AuthorSummary? replyToUser;
+  final String content;
+  final DateTime createdAt;
+}
+
+/// 创建上传请求（两步上传第一步）。mimeType 白名单
+/// image/jpeg|png|webp，byteSize ≤ 10485760（10 MiB，服务端配置项）；
+/// sha256 可选（64 位小写 hex，M3 照收照存不核验）。
+class CreateMediaUploadRequest {
+  const CreateMediaUploadRequest({
+    required this.kind,
+    required this.purpose,
+    required this.mimeType,
+    required this.byteSize,
+    this.sha256,
+  });
+
+  final MediaKind kind;
+  final MediaPurpose purpose;
+  final String mimeType;
+  final int byteSize;
+  final String? sha256;
+
+  Map<String, Object?> toJson() => {
+    'kind': kind.name,
+    'purpose': purpose.wire,
+    'mimeType': mimeType,
+    'byteSize': byteSize,
+    if (sha256 != null) 'sha256': sha256,
+  };
+}
+
+/// 预签名直传凭据。凭据（uploadUrl 含签名）TTL 默认 10 分钟，过期后
+/// 重新创建上传；直传必须原样携带 requiredHeaders（Content-Type 已签进
+/// 签名，改动即被存储侧拒绝）。凭据会过期，不得持久化。
+class MediaUploadCredentials {
+  const MediaUploadCredentials({
+    required this.assetId,
+    required this.uploadUrl,
+    required this.method,
+    required this.requiredHeaders,
+    required this.expiresAt,
+  });
+
+  factory MediaUploadCredentials.fromJson(Map<String, dynamic> json) {
+    return MediaUploadCredentials(
+      assetId: json['assetId'] as String,
+      uploadUrl: json['uploadUrl'] as String,
+      method: json['method'] as String,
+      requiredHeaders: (json['requiredHeaders'] as Map<String, dynamic>).map(
+        (key, value) => MapEntry(key, value as String),
+      ),
+      expiresAt: DateTime.parse(json['expiresAt'] as String),
+    );
+  }
+
+  final String assetId;
+  final String uploadUrl;
+
+  /// 契约定型恒为 PUT（enum 单值；直传时按本值发起请求）。
+  final String method;
+  final Map<String, String> requiredHeaders;
+  final DateTime expiresAt;
+}
+
+/// media asset（confirm 后的可引用形态）。url 仅 ready 态非空——时效性
+/// 预签名 GET（TTL 默认 1 小时），每次响应现签，不得持久化、过期即重取。
+class MediaAsset {
+  const MediaAsset({
+    required this.id,
+    required this.kind,
+    required this.purpose,
+    required this.mimeType,
+    required this.byteSize,
+    required this.widthPx,
+    required this.heightPx,
+    required this.status,
+    required this.url,
+    required this.readyAt,
+    required this.createdAt,
+  });
+
+  factory MediaAsset.fromJson(Map<String, dynamic> json) {
+    return MediaAsset(
+      id: json['id'] as String,
+      kind: MediaKind.fromJson(json['kind'] as String),
+      purpose: json['purpose'] as String,
+      mimeType: json['mimeType'] as String,
+      byteSize: json['byteSize'] as int?,
+      widthPx: json['widthPx'] as int?,
+      heightPx: json['heightPx'] as int?,
+      status: MediaAssetStatus.fromJson(json['status'] as String),
+      url: json['url'] as String?,
+      readyAt: _dateTimeOrNull(json['readyAt']),
+      createdAt: DateTime.parse(json['createdAt'] as String),
+    );
+  }
+
+  final String id;
+  final MediaKind kind;
+  final String purpose;
+  final String mimeType;
+  final int? byteSize;
+  final int? widthPx;
+  final int? heightPx;
+  final MediaAssetStatus status;
+  final String? url;
+  final DateTime? readyAt;
+  final DateTime createdAt;
+}
+
+/// 点赞权威终态（乐观更新以此对账回滚，回滚基准取响应值）。
+class LikeState {
+  const LikeState({required this.liked, required this.likeCount});
+
+  factory LikeState.fromJson(Map<String, dynamic> json) {
+    return LikeState(
+      liked: json['liked'] as bool,
+      likeCount: json['likeCount'] as int,
+    );
+  }
+
+  final bool liked;
+  final int likeCount;
+}
+
+/// 收藏权威终态（与点赞同构）。
+class BookmarkState {
+  const BookmarkState({required this.bookmarked, required this.bookmarkCount});
+
+  factory BookmarkState.fromJson(Map<String, dynamic> json) {
+    return BookmarkState(
+      bookmarked: json['bookmarked'] as bool,
+      bookmarkCount: json['bookmarkCount'] as int,
+    );
+  }
+
+  final bool bookmarked;
+  final int bookmarkCount;
+}
+
+/// 关注权威终态；followerCount 为目标用户的粉丝数（实时 COUNT）。
+class FollowState {
+  const FollowState({required this.following, required this.followerCount});
+
+  factory FollowState.fromJson(Map<String, dynamic> json) {
+    return FollowState(
+      following: json['following'] as bool,
+      followerCount: json['followerCount'] as int,
+    );
+  }
+
+  final bool following;
+  final int followerCount;
+}
+
+/// 关注计数（关注数 / 粉丝数 / 我是否已关注；查自己 followedByMe 恒 false）。
+class FollowStats {
+  const FollowStats({
+    required this.followerCount,
+    required this.followingCount,
+    required this.followedByMe,
+  });
+
+  factory FollowStats.fromJson(Map<String, dynamic> json) {
+    return FollowStats(
+      followerCount: json['followerCount'] as int,
+      followingCount: json['followingCount'] as int,
+      followedByMe: json['followedByMe'] as bool,
+    );
+  }
+
+  final int followerCount;
+  final int followingCount;
+  final bool followedByMe;
+}

lib/features/community/community_repository.dart

@@ -0,0 +1,304 @@
+import 'package:patbond_flutter/core/network/api_client.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/features/community/community_exceptions.dart';
+import 'package:patbond_flutter/features/community/community_models.dart';
+import 'package:uuid/uuid.dart';
+
+/// community / media 域仓库接口（契约 v1.3.0 的 13 路径 / 19 操作全覆盖；
+/// 页面依赖此抽象，widget / controller 测试注入假实现）。
+///
+/// media 两步上传本单只到协议层（创建上传 / 确认上传）；预签名 PUT
+/// 直传对象存储不走业务信封与 Bearer 鉴权，属 T3-13 独立客户端。
+abstract class CommunityRepository {
+  // ---- media 两步上传（协议层）----
+  Future<MediaUploadCredentials> createMediaUpload(
+    CreateMediaUploadRequest request,
+  );
+  Future<MediaAsset> completeMediaUpload(String assetId);
+
+  // ---- 帖子 CRUD / 发布 ----
+  /// [idempotencyKey]：调用方持键（T3-17 发布页「同键重放」——网络失败重试
+  /// 沿用同键命中服务端首帖，不重复建帖；缺省则本层每次调用换新键）。
+  Future<Post> createPost(CreatePostRequest request, {String? idempotencyKey});
+  Future<Post> getPost(String postId);
+  Future<Post> updatePost(String postId, UpdatePostRequest request);
+  Future<void> deletePost(String postId);
+  Future<CursorPage<Post>> listMyPosts({
+    int? limit,
+    String? cursor,
+    PostStatus? status,
+  });
+
+  // ---- Feed（cursor 分页）----
+  Future<CursorPage<FeedCard>> getFeed({int? limit, String? cursor});
+
+  // ---- 评论 ----
+  Future<CursorPage<PostComment>> listComments(
+    String postId, {
+    int? limit,
+    String? cursor,
+  });
+  Future<PostComment> createComment(
+    String postId,
+    CreateCommentRequest request,
+  );
+  Future<void> deleteComment(String commentId);
+
+  // ---- 点赞 / 收藏（PUT/DELETE 语义幂等，响应权威终态）----
+  Future<LikeState> likePost(String postId);
+  Future<LikeState> unlikePost(String postId);
+  Future<BookmarkState> bookmarkPost(String postId);
+  Future<BookmarkState> unbookmarkPost(String postId);
+  Future<CursorPage<FeedCard>> listMyBookmarks({int? limit, String? cursor});
+
+  // ---- 关注 ----
+  Future<FollowState> followUser(String userId);
+  Future<FollowState> unfollowUser(String userId);
+  Future<FollowStats> getFollowStats(String userId);
+}
+
+/// 基于 [ApiClient] 的实现。全部端点走 Bearer 鉴权（复用既有 token
+/// 拦截 + 401/40101 单飞刷新重放）；community 域业务错误码升格为类型化异常。
+///
+/// 幂等：createPost / createComment 两个 POST 按契约**必带**
+/// `Idempotency-Key`（1~128 字符；每次逻辑提交换新键；token 刷新后的
+/// 自动重放沿用同一个键——键在本层每次调用生成一次，重放走同一 headers）。
+/// 点赞/收藏/关注为 PUT/DELETE 语义幂等，无需幂等键。
+///
+/// 端口线路：community 域端点走 community 服务客户端；media 两步上传
+/// 端点由 **user 服务**提供（13 号报告 §2，MediaController 在
+/// patbond-user），经 [mediaApi] 直连——T3-13 真链路实测修正,
+/// 未提供时回落主客户端（既有测试桩场景）。
+class ApiCommunityRepository implements CommunityRepository {
+  ApiCommunityRepository({
+    required ApiClient api,
+    ApiClient? mediaApi,
+    this._uuid = const Uuid(),
+  }) : _api = api,
+       _mediaApi = mediaApi ?? api;
+
+  final ApiClient _api;
+  final ApiClient _mediaApi;
+  final Uuid _uuid;
+
+  Future<Object?> _request(
+    String path, {
+    String method = 'GET',
+    Object? body,
+    Map<String, Object?>? query,
+    bool idempotent = false,
+    String? idempotencyKey,
+    bool media = false,
+  }) async {
+    try {
+      return await (media ? _mediaApi : _api).request(
+        path,
+        method: method,
+        body: body,
+        query: query,
+        headers: idempotent
+            ? {'Idempotency-Key': idempotencyKey ?? _uuid.v4()}
+            : null,
+        requiresAuth: true,
+      );
+    } on ApiBusinessException catch (error) {
+      throw mapCommunityBusinessException(error);
+    }
+  }
+
+  Map<String, dynamic> _asMap(Object? data) => data! as Map<String, dynamic>;
+
+  // ---- media ----
+
+  @override
+  Future<MediaUploadCredentials> createMediaUpload(
+    CreateMediaUploadRequest request,
+  ) async {
+    final data = await _request(
+      '/api/v1/media/uploads',
+      method: 'POST',
+      body: request.toJson(),
+      media: true,
+    );
+    return MediaUploadCredentials.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<MediaAsset> completeMediaUpload(String assetId) async {
+    // 幂等由服务端保证：已 ready 重复 confirm 返回 200 同一 asset。
+    final data = await _request(
+      '/api/v1/media/uploads/$assetId/complete',
+      method: 'POST',
+      media: true,
+    );
+    return MediaAsset.fromJson(_asMap(data));
+  }
+
+  // ---- posts ----
+
+  @override
+  Future<Post> createPost(
+    CreatePostRequest request, {
+    String? idempotencyKey,
+  }) async {
+    final data = await _request(
+      '/api/v1/posts',
+      method: 'POST',
+      body: request.toJson(),
+      idempotent: true,
+      idempotencyKey: idempotencyKey,
+    );
+    return Post.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<Post> getPost(String postId) async {
+    final data = await _request('/api/v1/posts/$postId');
+    return Post.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<Post> updatePost(String postId, UpdatePostRequest request) async {
+    final data = await _request(
+      '/api/v1/posts/$postId',
+      method: 'PATCH',
+      body: request.toJson(),
+    );
+    return Post.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<void> deletePost(String postId) async {
+    await _request('/api/v1/posts/$postId', method: 'DELETE');
+  }
+
+  @override
+  Future<CursorPage<Post>> listMyPosts({
+    int? limit,
+    String? cursor,
+    PostStatus? status,
+  }) async {
+    final data = await _request(
+      '/api/v1/me/posts',
+      query: {
+        'limit': ?limit,
+        'cursor': ?cursor,
+        if (status != null) 'status': status.name,
+      },
+    );
+    return CursorPage.fromJson(_asMap(data), Post.fromJson);
+  }
+
+  // ---- feed ----
+
+  @override
+  Future<CursorPage<FeedCard>> getFeed({int? limit, String? cursor}) async {
+    final data = await _request(
+      '/api/v1/feed',
+      query: {'limit': ?limit, 'cursor': ?cursor},
+    );
+    return CursorPage.fromJson(_asMap(data), FeedCard.fromJson);
+  }
+
+  // ---- comments ----
+
+  @override
+  Future<CursorPage<PostComment>> listComments(
+    String postId, {
+    int? limit,
+    String? cursor,
+  }) async {
+    final data = await _request(
+      '/api/v1/posts/$postId/comments',
+      query: {'limit': ?limit, 'cursor': ?cursor},
+    );
+    return CursorPage.fromJson(_asMap(data), PostComment.fromJson);
+  }
+
+  @override
+  Future<PostComment> createComment(
+    String postId,
+    CreateCommentRequest request,
+  ) async {
+    final data = await _request(
+      '/api/v1/posts/$postId/comments',
+      method: 'POST',
+      body: request.toJson(),
+      idempotent: true,
+    );
+    return PostComment.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<void> deleteComment(String commentId) async {
+    // 顶层短路径先例：commentId 全局唯一。
+    await _request('/api/v1/comments/$commentId', method: 'DELETE');
+  }
+
+  // ---- interactions ----
+
+  @override
+  Future<LikeState> likePost(String postId) async {
+    final data = await _request('/api/v1/posts/$postId/like', method: 'PUT');
+    return LikeState.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<LikeState> unlikePost(String postId) async {
+    final data = await _request('/api/v1/posts/$postId/like', method: 'DELETE');
+    return LikeState.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<BookmarkState> bookmarkPost(String postId) async {
+    final data = await _request(
+      '/api/v1/posts/$postId/bookmark',
+      method: 'PUT',
+    );
+    return BookmarkState.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<BookmarkState> unbookmarkPost(String postId) async {
+    final data = await _request(
+      '/api/v1/posts/$postId/bookmark',
+      method: 'DELETE',
+    );
+    return BookmarkState.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<CursorPage<FeedCard>> listMyBookmarks({
+    int? limit,
+    String? cursor,
+  }) async {
+    final data = await _request(
+      '/api/v1/me/bookmarks',
+      query: {'limit': ?limit, 'cursor': ?cursor},
+    );
+    return CursorPage.fromJson(_asMap(data), FeedCard.fromJson);
+  }
+
+  // ---- follows ----
+
+  @override
+  Future<FollowState> followUser(String userId) async {
+    final data = await _request('/api/v1/users/$userId/follow', method: 'PUT');
+    return FollowState.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<FollowState> unfollowUser(String userId) async {
+    final data = await _request(
+      '/api/v1/users/$userId/follow',
+      method: 'DELETE',
+    );
+    return FollowState.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<FollowStats> getFollowStats(String userId) async {
+    final data = await _request('/api/v1/users/$userId/follow-stats');
+    return FollowStats.fromJson(_asMap(data));
+  }
+}

lib/features/community/feed_analytics.dart

@@ -0,0 +1,114 @@
+import 'package:patbond_flutter/analytics/page_view_tracker.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+
+/// feed 域埋点强类型封装（06 号规划 §1.4 字典 v3；后端白名单已随
+/// api dev@8089c06 就绪）。沿 pet_analytics 惯例：枚举编译期锁死，
+/// 业务代码禁止手拼事件名与属性；只记行为不记内容（隐私红线：postId
+/// 等内容 ID 一律不进 props，曝光去重键只存活于客户端内存）。
+
+/// feed_viewed / feed_load_failed 的 feedTab 枚举（06 §1.4）。
+/// M3 T3-14 仅接 home；topic / user_posts / favorites 随后续页面启用。
+enum FeedTab {
+  home('home'),
+  topic('topic'),
+  userPosts('user_posts'),
+  favorites('favorites');
+
+  const FeedTab(this.value);
+
+  final String value;
+}
+
+/// feed_load_failed 的 loadType 枚举。
+enum FeedLoadType {
+  refresh('refresh'),
+  loadMore('load_more');
+
+  const FeedLoadType(this.value);
+
+  final String value;
+}
+
+/// feed 加载失败原因（06 v3 失败枚举基底）。网络归并口径同 pet 域：
+/// 断网/超时/5xx 均并入 network_error，server_error 保留兜底。
+enum FeedLoadFailureReason {
+  rateLimited('rate_limited'),
+  networkError('network_error'),
+  serverError('server_error');
+
+  const FeedLoadFailureReason(this.value);
+
+  final String value;
+}
+
+/// 类型化异常 → 失败原因；会话失效返回 null（应用即将回登录页，
+/// 不作为 Feed 加载失败上报）。
+FeedLoadFailureReason? feedLoadFailureReasonOf(ApiException error) =>
+    switch (error) {
+      ApiNetworkException _ => FeedLoadFailureReason.networkError,
+      ApiRateLimitException _ => FeedLoadFailureReason.rateLimited,
+      SessionExpiredException _ => null,
+      _ => FeedLoadFailureReason.serverError,
+    };
+
+class FeedAnalytics {
+  FeedAnalytics(this._track);
+
+  /// 生产传 `AnalyticsService.trackEvent`，测试传录制桩。
+  final TrackEventFn _track;
+
+  /// 一个 Feed 浏览段的聚合曝光（06 §1.2 裁定）：离开 Feed（路由跳走 /
+  /// 退后台）时发一条，携带段内曝光卡片数（≥50% 可见 ≥500ms、按帖去重
+  /// 后的**计数**）、翻页数、刷新数与前台停留时长。
+  void feedViewed({
+    required FeedTab feedTab,
+    required int durationMs,
+    required int impressionCount,
+    required int loadMoreCount,
+    required int refreshCount,
+  }) {
+    _track('feed_viewed', {
+      'feedTab': feedTab.value,
+      'durationMs': durationMs,
+      'impressionCount': impressionCount,
+      'loadMoreCount': loadMoreCount,
+      'refreshCount': refreshCount,
+    });
+  }
+
+  /// 刷新或翻页请求失败（M3 验收「分页不丢失不重复」的客户端观测点）。
+  ///
+  /// [errorCode] 为业务错误码（网络错误时缺席）；[httpStatus] 由五位
+  /// 业务码推导（`code ~/ 100`，pet 域同款口径）。
+  void feedLoadFailed({
+    required FeedTab feedTab,
+    required FeedLoadType loadType,
+    required FeedLoadFailureReason reason,
+    int? errorCode,
+  }) {
+    _track('feed_load_failed', {
+      'feedTab': feedTab.value,
+      'loadType': loadType.value,
+      'failureReason': reason.value,
+      'errorCode': ?errorCode,
+      if (errorCode != null && errorCode >= 10000)
+        'httpStatus': errorCode ~/ 100,
+    });
+  }
+
+  /// [feedLoadFailed] 的异常直通口：会话失效不上报。
+  void feedLoadFailedFrom(
+    ApiException error, {
+    required FeedTab feedTab,
+    required FeedLoadType loadType,
+  }) {
+    final reason = feedLoadFailureReasonOf(error);
+    if (reason == null) return;
+    feedLoadFailed(
+      feedTab: feedTab,
+      loadType: loadType,
+      reason: reason,
+      errorCode: error is ApiBusinessException ? error.code : null,
+    );
+  }
+}

lib/features/community/feed_exposure.dart

@@ -0,0 +1,110 @@
+import 'dart:async';
+import 'dart:math';
+
+import 'package:patbond_flutter/features/community/feed_analytics.dart';
+
+/// 一个「Feed 浏览段」的聚合器（06 号规划 §1.2 裁定的客户端实现）。
+///
+/// 段生命周期由页面驱动：进入 Feed（Tab 激活且分段在 Feed）开段；
+/// 离开（切 Tab / 切分段 / 退后台 / 页面销毁）时 [settle] 结算并经
+/// [FeedAnalytics.feedViewed] 发**一条**聚合事件。
+///
+/// - 曝光判定：卡片可见面积 ≥ [visibleThreshold] 且持续 ≥ [dwell]，
+///   段内按 postId 去重；postId 只作内存去重键、绝不上报（隐私红线 2），
+///   段结束即弃。
+/// - durationMs 为前台时长（退后台即结算，段天然前台连续），上限
+///   截断 30 分钟防挂机污染（06 §1.4 实现注意）。
+class FeedViewSegment {
+  FeedViewSegment({DateTime Function()? now})
+    : _now = now ?? DateTime.now,
+      _settled = false {
+    _startedAt = _now();
+  }
+
+  static const visibleThreshold = 0.5;
+  static const dwell = Duration(milliseconds: 500);
+  static const maxDuration = Duration(minutes: 30);
+
+  final DateTime Function() _now;
+  late final DateTime _startedAt;
+
+  final Set<String> _impressed = <String>{};
+  final Map<String, Timer> _dwellTimers = <String, Timer>{};
+  int _loadMoreCount = 0;
+  int _refreshCount = 0;
+  bool _settled;
+
+  /// 段内曝光卡片数（已去重；仅测试与结算读取）。
+  int get impressionCount => _impressed.length;
+
+  /// 可见性回报：≥50% 起 500ms 驻留计时，跌破或滚出视口即取消；
+  /// 驻留满即记曝光（去重后不再计时）。
+  void updateVisibility(String postId, double visibleFraction) {
+    if (_settled) return;
+    if (visibleFraction >= visibleThreshold) {
+      if (_impressed.contains(postId) || _dwellTimers.containsKey(postId)) {
+        return;
+      }
+      _dwellTimers[postId] = Timer(dwell, () {
+        _dwellTimers.remove(postId);
+        _impressed.add(postId);
+      });
+    } else {
+      _dwellTimers.remove(postId)?.cancel();
+    }
+  }
+
+  /// 用户触发的下拉刷新 / 失败重试（首屏自动预取不计）。
+  void recordRefresh() {
+    if (!_settled) _refreshCount += 1;
+  }
+
+  /// 触底翻页请求（含尾部失败重试）。
+  void recordLoadMore() {
+    if (!_settled) _loadMoreCount += 1;
+  }
+
+  /// 结算：取消在途驻留计时并冻结计数；幂等（重复调用返回 null，
+  /// 保证一段恰好一条 feed_viewed）。
+  FeedViewSummary? settle() {
+    if (_settled) return null;
+    _settled = true;
+    for (final timer in _dwellTimers.values) {
+      timer.cancel();
+    }
+    _dwellTimers.clear();
+    final elapsed = _now().difference(_startedAt);
+    return FeedViewSummary(
+      durationMs: min(elapsed.inMilliseconds, maxDuration.inMilliseconds),
+      impressionCount: _impressed.length,
+      loadMoreCount: _loadMoreCount,
+      refreshCount: _refreshCount,
+    );
+  }
+}
+
+/// [FeedViewSegment.settle] 的结算结果（feed_viewed 专有属性）。
+class FeedViewSummary {
+  const FeedViewSummary({
+    required this.durationMs,
+    required this.impressionCount,
+    required this.loadMoreCount,
+    required this.refreshCount,
+  });
+
+  final int durationMs;
+  final int impressionCount;
+  final int loadMoreCount;
+  final int refreshCount;
+
+  /// 结算即上报的便捷口。
+  void report(FeedAnalytics analytics, {FeedTab feedTab = FeedTab.home}) {
+    analytics.feedViewed(
+      feedTab: feedTab,
+      durationMs: durationMs,
+      impressionCount: impressionCount,
+      loadMoreCount: loadMoreCount,
+      refreshCount: refreshCount,
+    );
+  }
+}

lib/features/community/media_compression.dart

@@ -0,0 +1,53 @@
+import 'dart:typed_data';
+
+import 'package:flutter_image_compress/flutter_image_compress.dart';
+import 'package:patbond_flutter/features/community/media_picking.dart';
+
+/// 压缩产物（直传本体）。mimeType 与直传 PUT 的 Content-Type、
+/// createUpload 登记值三处必须一致（Content-Type 已签进预签名签名）。
+class CompressedMediaImage {
+  const CompressedMediaImage({required this.bytes, required this.mimeType});
+
+  final Uint8List bytes;
+  final String mimeType;
+
+  int get byteSize => bytes.length;
+}
+
+/// 压缩抽象：quality 由 MediaUploader 的降质阶梯驱动（80 → 60），
+/// 单测注入假实现控制产物大小。
+abstract class MediaImageCompressor {
+  Future<CompressedMediaImage> compress(
+    PickedMediaImage source, {
+    required int quality,
+  });
+}
+
+/// 基于 flutter_image_compress 的原生压缩实现（03 号评估 §4.1 选型）。
+///
+/// 策略（03 号 §4.1 + 13 号报告偏差 #6）：长边 ≤2048 重采样、统一转码
+/// JPEG（服务端 mime 白名单不收 HEIC，客户端统一出 jpeg）；
+/// autoCorrectionAngle 矫正方向后不保留 EXIF——顺带剥离 GPS 定位隐私，
+/// **不要开 keepExif**。
+class NativeMediaImageCompressor implements MediaImageCompressor {
+  const NativeMediaImageCompressor({this.maxLongEdge = 2048});
+
+  final int maxLongEdge;
+
+  @override
+  Future<CompressedMediaImage> compress(
+    PickedMediaImage source, {
+    required int quality,
+  }) async {
+    final bytes = await FlutterImageCompress.compressWithList(
+      source.bytes,
+      minWidth: maxLongEdge,
+      minHeight: maxLongEdge,
+      quality: quality,
+      format: CompressFormat.jpeg,
+      autoCorrectionAngle: true,
+      keepExif: false,
+    );
+    return CompressedMediaImage(bytes: bytes, mimeType: 'image/jpeg');
+  }
+}

lib/features/community/media_direct_upload.dart

@@ -0,0 +1,82 @@
+import 'dart:typed_data';
+
+import 'package:dio/dio.dart';
+
+/// 预签名直传失败。
+///
+/// - [statusCode] 为 null 表示网络层失败（断连/超时），可原凭据重试；
+/// - 403 为存储侧拒绝签名（凭据过期/被改动），须重新 createUpload 换新凭据；
+/// - 其余状态码按可重试处理（重试走完整重传）。
+class MediaDirectUploadException implements Exception {
+  const MediaDirectUploadException({this.statusCode, required this.message});
+
+  final int? statusCode;
+  final String message;
+
+  /// 存储侧拒绝了凭据（签名过期/不符），重试前必须换新凭据。
+  bool get isCredentialRejected => statusCode == 403;
+
+  @override
+  String toString() => 'MediaDirectUploadException($statusCode): $message';
+}
+
+/// 预签名 PUT 直传抽象（两步上传第二步的传输层）。
+///
+/// 不走业务信封、不带 Bearer 鉴权——鉴权就是 URL 里的签名本身;
+/// [headers] 即 createUpload 返回的 requiredHeaders，必须原样携带
+/// （Content-Type 已签进签名，改动即 403）。
+abstract class MediaDirectUploadClient {
+  Future<void> put({
+    required String url,
+    required Map<String, String> headers,
+    required Uint8List bytes,
+    void Function(int sent, int total)? onProgress,
+  });
+}
+
+/// 基于裸 Dio 的实现：独立实例，无 AuthInterceptor（预签名 URL 携带
+/// Authorization 头会破坏 SigV4 校验），sendTimeout 按 10 MiB 弱网上限放宽。
+class DioMediaDirectUploadClient implements MediaDirectUploadClient {
+  DioMediaDirectUploadClient({Dio? dio})
+    : _dio =
+          dio ??
+          Dio(
+            BaseOptions(
+              connectTimeout: const Duration(seconds: 5),
+              sendTimeout: const Duration(seconds: 120),
+              receiveTimeout: const Duration(seconds: 30),
+              validateStatus: (_) => true,
+            ),
+          );
+
+  final Dio _dio;
+
+  @override
+  Future<void> put({
+    required String url,
+    required Map<String, String> headers,
+    required Uint8List bytes,
+    void Function(int sent, int total)? onProgress,
+  }) async {
+    final Response<Object?> response;
+    try {
+      response = await _dio.put<Object?>(
+        url,
+        data: Stream<Uint8List>.value(bytes),
+        options: Options(
+          headers: {...headers, Headers.contentLengthHeader: bytes.length},
+        ),
+        onSendProgress: onProgress,
+      );
+    } on DioException catch (error) {
+      throw MediaDirectUploadException(message: '直传网络失败：${error.type.name}');
+    }
+    final status = response.statusCode ?? 0;
+    if (status < 200 || status >= 300) {
+      throw MediaDirectUploadException(
+        statusCode: status,
+        message: '存储侧拒绝直传：HTTP $status',
+      );
+    }
+  }
+}

lib/features/community/media_picking.dart

@@ -0,0 +1,48 @@
+import 'dart:typed_data';
+
+import 'package:image_picker/image_picker.dart';
+
+/// 待上传的一张原始图（选择器产物，压缩前形态）。
+///
+/// 只持有内存字节：不落磁盘副本、不携带原始文件路径，配合压缩层剥离
+/// EXIF（含 GPS）的隐私纪律（03 号评估 §4.1）。
+class PickedMediaImage {
+  const PickedMediaImage({required this.bytes, this.name});
+
+  /// 原始字节（供压缩层消费与格内缩略预览）。
+  final Uint8List bytes;
+
+  /// 原始文件名（仅诊断用途，不参与上传——objectKey 由服务端生成）。
+  final String? name;
+}
+
+/// 图片选择抽象：MediaUploader 只依赖本接口，单测注入假实现，
+/// widget 测试无需平台通道。
+abstract class MediaImagePicker {
+  /// 拉起系统选择器，最多返回 [limit] 张；用户取消返回空列表。
+  Future<List<PickedMediaImage>> pickImages({required int limit});
+}
+
+/// 基于 image_picker 的系统选择器实现（03 号评估 §4.1 选型：官方维护、
+/// pickMultiImage 多选，M3 不引入重型相册组件）。
+class SystemMediaImagePicker implements MediaImagePicker {
+  SystemMediaImagePicker({ImagePicker? picker})
+    : _picker = picker ?? ImagePicker();
+
+  final ImagePicker _picker;
+
+  @override
+  Future<List<PickedMediaImage>> pickImages({required int limit}) async {
+    // 仅剩一个空位时用单选（pickMultiImage 的 limit 在部分平台要求 ≥2）。
+    final files = limit <= 1
+        ? [?await _picker.pickImage(source: ImageSource.gallery)]
+        : await _picker.pickMultiImage(limit: limit);
+    final images = <PickedMediaImage>[];
+    for (final file in files.take(limit)) {
+      images.add(
+        PickedMediaImage(bytes: await file.readAsBytes(), name: file.name),
+      );
+    }
+    return images;
+  }
+}

lib/features/community/media_uploader.dart

@@ -0,0 +1,570 @@
+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/features/community/community_models.dart';
+import 'package:patbond_flutter/features/community/community_repository.dart';
+import 'package:patbond_flutter/features/community/media_compression.dart';
+import 'package:patbond_flutter/features/community/media_direct_upload.dart';
+import 'package:patbond_flutter/features/community/media_picking.dart';
+import 'package:patbond_flutter/features/community/post_analytics.dart';
+
+/// 单张图的上传阶段（05 号规范 §3.3 四视觉态的底层状态模型）。
+///
+/// 生命周期：queued → compressing → uploading(progress) → confirming
+/// → ready | failed(retryable?)。ready 是唯一可交付态——**assetId 只在
+/// ready 态对外可见**（孤儿防护：未 confirm 的 asset 不得被引用）。
+enum MediaItemPhase {
+  queued,
+  compressing,
+  uploading,
+  confirming,
+  ready,
+  failed,
+}
+
+/// 单张图的不可变状态快照（UI 消费；内部任务状态见 _UploadTask）。
+@immutable
+class MediaUploadItem {
+  const MediaUploadItem({
+    required this.localId,
+    required this.phase,
+    required this.previewBytes,
+    this.progress = 0,
+    this.assetId,
+    this.errorMessage,
+    this.retryable = false,
+  }) : assert(
+         (assetId != null) == (phase == MediaItemPhase.ready),
+         'assetId 与 ready 态严格绑定（孤儿防护）',
+       );
+
+  /// 本地稳定标识（重试/删除寻址用，与服务端无关）。
+  final int localId;
+
+  final MediaItemPhase phase;
+
+  /// 缩略预览字节（原图，UI 直接 Image.memory 渲染）。
+  final Uint8List previewBytes;
+
+  /// 直传进度 0..1（uploading 有意义；confirming 视作 1.0）。
+  final double progress;
+
+  /// ready 态的可引用 asset 标识；其余态恒为 null（构造期断言兜底）。
+  final String? assetId;
+
+  /// failed 态的用户可读原因。
+  final String? errorMessage;
+
+  /// failed 态是否可重试（false = 终态，如压缩后仍超限）。
+  final bool retryable;
+
+  bool get isReady => phase == MediaItemPhase.ready;
+  bool get isFailed => phase == MediaItemPhase.failed;
+  bool get isBusy => !isReady && !isFailed;
+}
+
+/// 内部任务：可变状态 + 生命周期旗标（cancelled 后一切在途结果作废）。
+class _UploadTask {
+  _UploadTask({required this.localId, required this.source});
+
+  final int localId;
+  final PickedMediaImage source;
+
+  MediaItemPhase phase = MediaItemPhase.queued;
+  double progress = 0;
+  String? errorMessage;
+  bool retryable = false;
+  bool cancelled = false;
+
+  /// 本图第几次上传尝试（媒体三段埋点 attemptSeq，从 1 起；retry 递增）。
+  int attemptSeq = 1;
+
+  /// 本次尝试的 started 时刻（succeeded 的 durationMs 口径）。
+  DateTime? attemptStartedAt;
+
+  /// 压缩产物缓存（重试跳过重压缩）。
+  CompressedMediaImage? compressed;
+
+  /// confirm 成功前的服务端 assetId 只以管线局部变量存在，**不落任务
+  /// 状态、不出现在 [MediaUploadItem] 快照**——孤儿防护的结构保证;
+  /// confirm 通过后才写入 [readyAssetId]。
+  String? readyAssetId;
+
+  MediaUploadItem snapshot() => MediaUploadItem(
+    localId: localId,
+    phase: phase,
+    previewBytes: source.bytes,
+    progress: progress,
+    assetId: readyAssetId,
+    errorMessage: errorMessage,
+    retryable: retryable,
+  );
+}
+
+/// 媒体上传编排器（T3-13，03 号评估 §4.3 冻结接口的定稿实现）。
+///
+/// 职责：选图 → 压缩（降质阶梯 80→60，仍超 10 MiB 拒绝为终态失败）→
+/// createUpload → 预签名 PUT 直传（进度回调；Content-Type 按
+/// requiredHeaders 原样携带）→ confirm → ready assetId 交付。
+///
+/// 语义要点：
+/// - **顺序保持**：items 顺序 = 加入顺序 = position 语义；并发上传的
+///   完成先后不影响顺序（[buildAttachRequests] 按当前列表序发号）。
+/// - **单飞槽位**：至多 [maxConcurrentUploads] 张同时占用网络管线，
+///   单图失败不拖垮整批。
+/// - **凭据过期**：PUT 前过期预检、存储侧 403 各触发一次自动
+///   re-createUpload（换新 assetId 新凭据）；再失败交给手动重试。
+/// - **失败重试**：retry 复用压缩产物、从 createUpload 全新开始
+///   （统一覆盖「对象未上传保持 uploading」与「内容不符置 failed 终态」
+///   两种服务端分支——旧 asset 弃引用，由服务端超时清理兜底）。
+/// - **孤儿防护**：未 confirm 的 assetId 只以管线局部变量存在;
+///   对外可见的 [MediaUploadItem.assetId] 与 ready 态严格绑定（断言），
+///   [buildAttachRequests] 仅在全员 ready 时可用。
+/// - 预签名凭据只存内存、用完即弃，不持久化（既有纪律）。
+/// - **媒体三段埋点**（T3-17）：每次尝试恰一条 started，收敛为
+///   succeeded / failed 各一条；`sizeBucket` 统一取原图字节数。
+class MediaUploader extends ChangeNotifier {
+  MediaUploader({
+    required this._repository,
+    MediaImagePicker? picker,
+    MediaImageCompressor? compressor,
+    MediaDirectUploadClient? directUpload,
+    this._analytics,
+    this.maxImages = 9,
+    this.maxConcurrentUploads = 2,
+    this.maxByteSize = 10 * 1024 * 1024,
+    DateTime Function()? now,
+  }) : _picker = picker ?? SystemMediaImagePicker(),
+       _compressor = compressor ?? const NativeMediaImageCompressor(),
+       _directUpload = directUpload ?? DioMediaDirectUploadClient(),
+       _now = now ?? DateTime.now,
+       _slots = maxConcurrentUploads;
+
+  final CommunityRepository _repository;
+  final MediaImagePicker _picker;
+  final MediaImageCompressor _compressor;
+  final MediaDirectUploadClient _directUpload;
+
+  /// 媒体上传三段埋点（T3-17 接入；未注入即不上报）。
+  final PostAnalytics? _analytics;
+
+  final DateTime Function() _now;
+
+  /// 九宫格上限（05 号规范 §3.2）。
+  final int maxImages;
+
+  final int maxConcurrentUploads;
+
+  /// 与服务端 byteSize 上限一致（10 MiB，13 号报告偏差 #7）。
+  final int maxByteSize;
+
+  /// 凭据过期预检安全边距：距 expiresAt 不足此值即视为过期，直接换新。
+  static const credentialsSafetyMargin = Duration(seconds: 30);
+
+  /// 压缩降质阶梯（80 常规 → 60 兜底；仍超限即终态拒绝）。
+  static const qualityLadder = [80, 60];
+
+  final List<_UploadTask> _tasks = [];
+  int _nextLocalId = 1;
+  bool _picking = false;
+
+  int _slots;
+  final List<Completer<void>> _slotWaiters = [];
+
+  // ---- 对外状态 ----
+
+  /// 选择器是否拉起中（uploader 级 picking 态）。
+  bool get isPicking => _picking;
+
+  List<MediaUploadItem> get items =>
+      List.unmodifiable(_tasks.map((task) => task.snapshot()));
+
+  bool get isEmpty => _tasks.isEmpty;
+  int get remainingSlots => maxImages - _tasks.length;
+  int get readyCount =>
+      _tasks.where((t) => t.phase == MediaItemPhase.ready).length;
+  bool get allReady => _tasks.isNotEmpty && readyCount == _tasks.length;
+  bool get hasFailure => _tasks.any((t) => t.phase == MediaItemPhase.failed);
+  bool get hasBusyItem => _picking || _tasks.any((t) => t.snapshot().isBusy);
+
+  /// 页级汇总进度（05 号规范 §3.3 线性进度条）：各图等权。
+  double get overallProgress {
+    if (_tasks.isEmpty) return 0;
+    var sum = 0.0;
+    for (final task in _tasks) {
+      sum += switch (task.phase) {
+        MediaItemPhase.ready => 1.0,
+        MediaItemPhase.uploading => task.progress,
+        MediaItemPhase.confirming => 1.0,
+        _ => 0.0,
+      };
+    }
+    return sum / _tasks.length;
+  }
+
+  /// 交付口（T3-17 发布页组 CreatePostRequest.media 用）：
+  /// 仅全员 ready 时可用——**任何非 ready 项在场即抛 [StateError]**，
+  /// 从类型上杜绝未 confirm asset 被引用。position 按当前列表序 0..n-1。
+  List<PostMediaAttachRequest> buildAttachRequests({int coverIndex = 0}) {
+    if (!allReady) {
+      throw StateError('存在未就绪的上传项，不得引用（孤儿防护）');
+    }
+    return [
+      for (final (index, task) in _tasks.indexed)
+        PostMediaAttachRequest(
+          assetId: task.readyAssetId!,
+          position: index,
+          isCover: index == coverIndex,
+        ),
+    ];
+  }
+
+  // ---- 操作 ----
+
+  /// 拉起系统选择器并把所选图片加入上传管线（剩余槽位自动截断）。
+  Future<void> pickAndAdd() async {
+    if (_picking || remainingSlots <= 0) return;
+    _picking = true;
+    notifyListeners();
+    try {
+      final images = await _picker.pickImages(limit: remainingSlots);
+      _picking = false;
+      addImages(images);
+    } catch (_) {
+      _picking = false;
+      notifyListeners();
+    }
+  }
+
+  /// 直接加入图片（选择器旁路，测试与分享外链场景用）。
+  void addImages(List<PickedMediaImage> images) {
+    for (final image in images.take(remainingSlots)) {
+      final task = _UploadTask(localId: _nextLocalId++, source: image);
+      _tasks.add(task);
+      unawaited(_run(task));
+    }
+    notifyListeners();
+  }
+
+  /// 重试一张可重试失败图：复用压缩产物，从 createUpload 全新开始。
+  void retry(int localId) {
+    final task = _taskOrNull(localId);
+    if (task == null ||
+        task.phase != MediaItemPhase.failed ||
+        !task.retryable) {
+      return;
+    }
+    task.errorMessage = null;
+    task.retryable = false;
+    task.progress = 0;
+    task.attemptSeq += 1;
+    task.phase = MediaItemPhase.queued;
+    notifyListeners();
+    unawaited(_run(task));
+  }
+
+  /// 移除一张图（任意态可移除）；在途请求结果一律作废，未 confirm 的
+  /// 服务端 asset 弃引用（服务端超时清理兜底）。在途任务被移除按
+  /// `cancelled` 上报一条上传失败（06 §1.4「用户取消」口径）。
+  void remove(int localId) {
+    final task = _taskOrNull(localId);
+    if (task == null) return;
+    _reportCancelled(task);
+    task.cancelled = true;
+    _tasks.remove(task);
+    notifyListeners();
+  }
+
+  /// 清空全部（发布成功/离开页面时调用）；在途任务同 [remove] 记 cancelled。
+  void reset() {
+    for (final task in _tasks) {
+      _reportCancelled(task);
+      task.cancelled = true;
+    }
+    _tasks.clear();
+    _picking = false;
+    notifyListeners();
+  }
+
+  _UploadTask? _taskOrNull(int localId) {
+    for (final task in _tasks) {
+      if (task.localId == localId) return task;
+    }
+    return null;
+  }
+
+  // ---- 管线 ----
+
+  Future<void> _run(_UploadTask task) async {
+    await _acquireSlot();
+    try {
+      if (task.cancelled) return;
+      // 一次尝试恰一条 started（含压缩段：压缩失败也在漏斗内可见）。
+      task.attemptStartedAt = _now();
+      _analytics?.mediaUploadStarted(
+        mediaType: MediaType.image,
+        byteSize: task.source.bytes.length,
+      );
+      final compressed = await _compress(task);
+      if (compressed == null || task.cancelled) return;
+      await _uploadAndConfirm(task, compressed);
+    } finally {
+      _releaseSlot();
+    }
+  }
+
+  /// 压缩（降质阶梯）；超限终态失败返回 null。
+  Future<CompressedMediaImage?> _compress(_UploadTask task) async {
+    final cached = task.compressed;
+    if (cached != null) return cached;
+    _transition(task, MediaItemPhase.compressing);
+    try {
+      for (final quality in qualityLadder) {
+        final result = await _compressor.compress(
+          task.source,
+          quality: quality,
+        );
+        if (task.cancelled) return null;
+        if (result.byteSize <= maxByteSize) {
+          task.compressed = result;
+          return result;
+        }
+      }
+    } catch (_) {
+      _fail(
+        task,
+        message: '图片处理失败',
+        retryable: true,
+        reason: MediaUploadFailureReason.unsupportedFormat,
+      );
+      return null;
+    }
+    _fail(
+      task,
+      message: '图片过大，压缩后仍超过 10 MB',
+      retryable: false,
+      reason: MediaUploadFailureReason.mediaTooLarge,
+    );
+    return null;
+  }
+
+  Future<void> _uploadAndConfirm(
+    _UploadTask task,
+    CompressedMediaImage compressed,
+  ) async {
+    // createUpload：登记 mime/byteSize，取预签名 PUT 凭据（内存态，不持久化）。
+    MediaUploadCredentials credentials;
+    try {
+      credentials = await _createUpload(compressed);
+    } on Exception catch (error) {
+      if (!task.cancelled) _failFromApi(task, error);
+      return;
+    }
+    if (task.cancelled) return;
+
+    // 直传 PUT：过期预检与存储侧 403 各允许一次自动换新凭据。
+    _transition(task, MediaItemPhase.uploading);
+    var renewed = false;
+    while (true) {
+      if (_credentialsExpired(credentials)) {
+        if (renewed) {
+          _fail(
+            task,
+            message: '上传凭据已过期',
+            retryable: true,
+            reason: MediaUploadFailureReason.serverError,
+          );
+          return;
+        }
+        renewed = true;
+        try {
+          credentials = await _createUpload(compressed);
+        } on Exception catch (error) {
+          if (!task.cancelled) _failFromApi(task, error);
+          return;
+        }
+        if (task.cancelled) return;
+        // 回到循环顶复检新凭据（服务端时钟异常仍过期即失败，不无限重取）。
+        continue;
+      }
+      try {
+        await _directUpload.put(
+          url: credentials.uploadUrl,
+          headers: credentials.requiredHeaders,
+          bytes: compressed.bytes,
+          onProgress: (sent, total) {
+            if (task.cancelled || total <= 0) return;
+            task.progress = sent / total;
+            notifyListeners();
+          },
+        );
+        break;
+      } on MediaDirectUploadException catch (error) {
+        if (task.cancelled) return;
+        if (error.isCredentialRejected && !renewed) {
+          renewed = true;
+          try {
+            credentials = await _createUpload(compressed);
+          } on Exception catch (creationError) {
+            _failFromApi(task, creationError);
+            return;
+          }
+          if (task.cancelled) return;
+          task.progress = 0;
+          notifyListeners();
+          continue;
+        }
+        _fail(
+          task,
+          message: error.statusCode == null ? '网络中断，上传失败' : '上传被存储服务拒绝',
+          retryable: true,
+          reason: error.statusCode == null
+              ? MediaUploadFailureReason.networkError
+              : MediaUploadFailureReason.serverError,
+        );
+        return;
+      }
+    }
+    if (task.cancelled) return;
+
+    // confirm：42205 对象未上传保持 uploading / 内容不符置 failed 终态,
+    // 客户端统一按「可重试 + 重试换新 asset」处理，两分支都正确收敛。
+    _transition(task, MediaItemPhase.confirming);
+    final MediaAsset asset;
+    try {
+      asset = await _repository.completeMediaUpload(credentials.assetId);
+    } on Exception catch (error) {
+      if (!task.cancelled) _failFromApi(task, error);
+      return;
+    }
+    if (task.cancelled) return;
+    if (asset.status != MediaAssetStatus.ready) {
+      _fail(
+        task,
+        message: '上传确认未通过',
+        retryable: true,
+        reason: MediaUploadFailureReason.serverError,
+      );
+      return;
+    }
+    task.readyAssetId = asset.id;
+    task.progress = 1;
+    _transition(task, MediaItemPhase.ready);
+    final startedAt = task.attemptStartedAt;
+    _analytics?.mediaUploadSucceeded(
+      mediaType: MediaType.image,
+      byteSize: task.source.bytes.length,
+      durationMs: startedAt == null
+          ? 0
+          : _now().difference(startedAt).inMilliseconds,
+    );
+  }
+
+  Future<MediaUploadCredentials> _createUpload(
+    CompressedMediaImage compressed,
+  ) {
+    return _repository.createMediaUpload(
+      CreateMediaUploadRequest(
+        kind: MediaKind.image,
+        purpose: MediaPurpose.postImage,
+        mimeType: compressed.mimeType,
+        byteSize: compressed.byteSize,
+      ),
+    );
+  }
+
+  bool _credentialsExpired(MediaUploadCredentials credentials) =>
+      !_now().add(credentialsSafetyMargin).isBefore(credentials.expiresAt);
+
+  void _failFromApi(_UploadTask task, Exception error) {
+    // 参数被服务端拒绝（40000：mime/byteSize 白名单外）重试无意义，终态。
+    final isParamError =
+        error is ApiBusinessException && error.code == ApiCodes.paramError;
+    _fail(
+      task,
+      message: error is ApiBusinessException ? error.message : '网络异常，请重试',
+      retryable: !isParamError,
+      // 客户端已本地保证 ≤10 MiB，故 40000 归因为格式白名单外；
+      // 会话失效不上报（reason 传 null），其余业务/限流并入 server_error。
+      reason: switch (error) {
+        ApiBusinessException _ when isParamError =>
+          MediaUploadFailureReason.unsupportedFormat,
+        SessionExpiredException _ => null,
+        ApiNetworkException _ => MediaUploadFailureReason.networkError,
+        _ => MediaUploadFailureReason.serverError,
+      },
+      errorCode: error is ApiBusinessException ? error.code : null,
+    );
+  }
+
+  void _fail(
+    _UploadTask task, {
+    required String message,
+    required bool retryable,
+    required MediaUploadFailureReason? reason,
+    int? errorCode,
+  }) {
+    if (task.cancelled) return;
+    task.phase = MediaItemPhase.failed;
+    task.errorMessage = message;
+    task.retryable = retryable;
+    if (reason != null) {
+      _analytics?.mediaUploadFailed(
+        mediaType: MediaType.image,
+        byteSize: task.source.bytes.length,
+        reason: reason,
+        attemptSeq: task.attemptSeq,
+        errorCode: errorCode,
+      );
+    }
+    notifyListeners();
+  }
+
+  /// 在途任务被删格/清空作废 → `cancelled`（已 ready / 已 failed 不报）。
+  void _reportCancelled(_UploadTask task) {
+    if (task.cancelled || !task.snapshot().isBusy) return;
+    _analytics?.mediaUploadFailed(
+      mediaType: MediaType.image,
+      byteSize: task.source.bytes.length,
+      reason: MediaUploadFailureReason.cancelled,
+      attemptSeq: task.attemptSeq,
+    );
+  }
+
+  void _transition(_UploadTask task, MediaItemPhase phase) {
+    if (task.cancelled) return;
+    task.phase = phase;
+    notifyListeners();
+  }
+
+  Future<void> _acquireSlot() {
+    if (_slots > 0) {
+      _slots--;
+      return Future.value();
+    }
+    final waiter = Completer<void>();
+    _slotWaiters.add(waiter);
+    return waiter.future;
+  }
+
+  void _releaseSlot() {
+    if (_slotWaiters.isNotEmpty) {
+      _slotWaiters.removeAt(0).complete();
+    } else {
+      _slots++;
+    }
+  }
+}
+
+/// [MediaUploader] 的构造口（发布页每次进入建一个，退出即 dispose）。
+///
+/// 生产缺省即 `MediaUploader(repository: ..., analytics: ...)`；注入点为
+/// **测试与桌面实测专用**——Linux 桌面既无 image_picker 也无
+/// flutter_image_compress 的原生实现，桌面真链路只替换选图与压缩两层，
+/// 其余（createUpload / 直传 PUT / confirm）全为生产实现。
+typedef MediaUploaderFactory =
+    MediaUploader Function(
+      CommunityRepository repository,
+      PostAnalytics? analytics,
+    );

lib/features/community/post_analytics.dart

@@ -0,0 +1,239 @@
+import 'package:patbond_flutter/analytics/page_view_tracker.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/features/community/community_interaction_analytics.dart'
+    show textLengthBucketOf;
+
+/// post 域埋点强类型封装（06 号规划 §1.4 发布漏斗五事件 + 媒体上传三段；
+/// 后端白名单随 api dev@`8089c06` 就绪，22 号报告 §1 键集逐一对齐）。
+/// 沿 pet/feed/互动域惯例：枚举编译期锁死，业务代码禁止手拼事件名与属性。
+///
+/// 隐私纪律（06 §1.3 红线）：正文只出分桶不出字数（红线 1）；postId /
+/// assetId 等内容 ID 一律不进 props（红线 2）；媒体只报 [MediaType] 与
+/// [mediaSizeBucketOf] 分桶，文件名/路径/URL 禁止（红线 4）。
+///
+/// **不得上报**（22 号 §1 末段锁死为 unknown）：`post_impression`、
+/// `post_viewed`、`post_like_failed` 等——本文件不提供其封装。
+
+/// 发帖入口（06 §1.4 `post_create_started.entryPoint`）。
+/// M3 接 create_tab / feed；topic_detail / pet_detail 随后续页面启用。
+enum PostEntryPoint {
+  createTab('create_tab'),
+  feed('feed'),
+  topicDetail('topic_detail'),
+  petDetail('pet_detail');
+
+  const PostEntryPoint(this.value);
+
+  final String value;
+}
+
+/// 草稿保存触发方式（06 §1.4：**自动保存不埋**，防高频）。
+enum DraftSaveTrigger {
+  /// 「存草稿」按钮显式保存。
+  manual('manual'),
+
+  /// 离开发布页时经「保留草稿？」确认保存。
+  onExit('on_exit');
+
+  const DraftSaveTrigger(this.value);
+
+  final String value;
+}
+
+/// 发布失败原因（06 §1.4 枚举；`content_rejected` 待拍板未启用，
+/// `not_found` 取 §1.4「失败枚举基底」的复用条——草稿已被别处删除）。
+enum PostPublishFailureReason {
+  validationError('validation_error'),
+  mediaUploadIncomplete('media_upload_incomplete'),
+  notFound('not_found'),
+  rateLimited('rate_limited'),
+  networkError('network_error'),
+  serverError('server_error');
+
+  const PostPublishFailureReason(this.value);
+
+  final String value;
+}
+
+/// 媒体类型（M3 仅 image；video 随视频能力启用）。
+enum MediaType {
+  image('image'),
+  video('video');
+
+  const MediaType(this.value);
+
+  final String value;
+}
+
+/// 单文件上传失败原因（06 §1.4 媒体漏斗枚举）。
+enum MediaUploadFailureReason {
+  mediaTooLarge('media_too_large'),
+  unsupportedFormat('unsupported_format'),
+  networkError('network_error'),
+  serverError('server_error'),
+
+  /// 用户在上传途中删格 / 离开发布页作废在途任务。
+  cancelled('cancelled');
+
+  const MediaUploadFailureReason(this.value);
+
+  final String value;
+}
+
+/// 类型化异常 → 发布失败原因；会话失效返回 null（应用即将回登录页，
+/// 不作为发布失败上报，feed / 互动域同款口径）。
+///
+/// 映射取舍（26 号报告 §3 有对照表）：42203 恰为
+/// [PostPublishFailureReason.mediaUploadIncomplete]；40905（同键异
+/// payload）归 validation_error——提交内容与幂等键不一致属提交侧问题，
+/// 非服务端故障；40902（乐观锁，自动刷新 version 重提仍失败）归
+/// server_error 兜底。
+PostPublishFailureReason? postPublishFailureReasonOf(ApiException error) =>
+    switch (error) {
+      ApiNetworkException _ => PostPublishFailureReason.networkError,
+      ApiRateLimitException _ => PostPublishFailureReason.rateLimited,
+      SessionExpiredException _ => null,
+      ApiBusinessException(:final code) => switch (code) {
+        ApiCodes.paramError || ApiCodes.idempotencyKeyMismatch =>
+          PostPublishFailureReason.validationError,
+        ApiCodes.mediaNotReady =>
+          PostPublishFailureReason.mediaUploadIncomplete,
+        ApiCodes.postNotFound ||
+        ApiCodes.mediaNotFound => PostPublishFailureReason.notFound,
+        _ => PostPublishFailureReason.serverError,
+      },
+    };
+
+/// 媒体大小分桶（06 §1.3 红线 4：不报精确字节数）。
+/// `lt_1mb` / `mb_1_5` / `mb_5_20` / `gte_20mb`，以 MiB 为界
+/// （与 MediaUploader 的 10 MiB 上限同一进制）。
+String mediaSizeBucketOf(int byteSize) {
+  const mib = 1024 * 1024;
+  if (byteSize < mib) return 'lt_1mb';
+  if (byteSize < 5 * mib) return 'mb_1_5';
+  if (byteSize < 20 * mib) return 'mb_5_20';
+  return 'gte_20mb';
+}
+
+/// 发布漏斗 + 媒体上传三段埋点（22 号白名单 v3 事件 22~29）。
+class PostAnalytics {
+  PostAnalytics(this._track);
+
+  /// 生产传 `AnalyticsService.trackEvent`，测试传录制桩。
+  final TrackEventFn _track;
+
+  // ---- 发布漏斗 ----
+
+  /// 进入发布页并产生**首次输入**（首个字符或首次选媒体），每次进入记一次。
+  /// 草稿恢复不算输入（非用户动作，不上报）。
+  void postCreateStarted({required PostEntryPoint entryPoint}) {
+    _track('post_create_started', {'entryPoint': entryPoint.value});
+  }
+
+  /// 草稿保存**成功响应后**；仅显式保存与离开时保存（自动保存不埋）。
+  void postDraftSaved({
+    required DraftSaveTrigger trigger,
+    required int mediaCount,
+  }) {
+    _track('post_draft_saved', {
+      'trigger': trigger.value,
+      'mediaCount': mediaCount,
+    });
+  }
+
+  /// 发布成功响应后（漏斗事件，H5/H6 核心数据源）。
+  ///
+  /// [durationMs]：`post_create_started` → 发布成功；[textLength] 经
+  /// [textLengthBucketOf] 分桶后上报，精确字数不出端；[fromDraft] 指
+  /// 「本次发布基于先前保存/恢复的草稿」（发布内部的建草稿→迁移两步
+  /// 不算，见 26 号报告 §3）。
+  void postPublishSucceeded({
+    required int durationMs,
+    required int mediaCount,
+    required int topicCount,
+    required int textLength,
+    required bool fromDraft,
+  }) {
+    _track('post_publish_succeeded', {
+      'durationMs': durationMs,
+      'mediaCount': mediaCount,
+      'topicCount': topicCount,
+      'textLengthBucket': textLengthBucketOf(textLength),
+      'fromDraft': fromDraft,
+    });
+  }
+
+  /// 发布失败 / 超时 / 本地校验拦截。
+  ///
+  /// [errorCode] 为业务错误码（网络错误时缺席）；[httpStatus] 由五位业务码
+  /// 推导（`code ~/ 100`，pet 域同款）；[attemptSeq] 为本次发布会话内第几次
+  /// 尝试（从 1 起，发布成功或离开发布页后重置）。
+  void postPublishFailed({
+    required PostPublishFailureReason reason,
+    required int attemptSeq,
+    int? errorCode,
+  }) {
+    _track('post_publish_failed', {
+      'failureReason': reason.value,
+      'attemptSeq': attemptSeq,
+      'errorCode': ?errorCode,
+      if (errorCode != null && errorCode >= 10000)
+        'httpStatus': errorCode ~/ 100,
+    });
+  }
+
+  /// 删帖成功响应后（单事件风格，无专有属性；失败靠服务端错误率观测）。
+  /// M3 触点：发布页「不保留草稿」删除服务端草稿。
+  void postDeleted() {
+    _track('post_deleted', const {});
+  }
+
+  // ---- 媒体上传三段（逐文件）----
+
+  /// 单个文件开始上传（一次尝试恰一条；重试各记一条）。
+  ///
+  /// [byteSize] 取**选图原文件**字节数，保证同一次尝试三段事件的
+  /// `sizeBucket` 一致（压缩产物大小不另开一套桶）。
+  void mediaUploadStarted({
+    required MediaType mediaType,
+    required int byteSize,
+  }) {
+    _track('post_media_upload_started', {
+      'mediaType': mediaType.value,
+      'sizeBucket': mediaSizeBucketOf(byteSize),
+    });
+  }
+
+  /// 单文件上传成功（confirm 返回 ready 后）。
+  /// [durationMs]：本次尝试 started → ready。
+  void mediaUploadSucceeded({
+    required MediaType mediaType,
+    required int byteSize,
+    required int durationMs,
+  }) {
+    _track('post_media_upload_succeeded', {
+      'mediaType': mediaType.value,
+      'sizeBucket': mediaSizeBucketOf(byteSize),
+      'durationMs': durationMs,
+    });
+  }
+
+  /// 单文件失败 / 超时 / 用户取消。
+  void mediaUploadFailed({
+    required MediaType mediaType,
+    required int byteSize,
+    required MediaUploadFailureReason reason,
+    required int attemptSeq,
+    int? errorCode,
+  }) {
+    _track('post_media_upload_failed', {
+      'mediaType': mediaType.value,
+      'sizeBucket': mediaSizeBucketOf(byteSize),
+      'failureReason': reason.value,
+      'attemptSeq': attemptSeq,
+      'errorCode': ?errorCode,
+      if (errorCode != null && errorCode >= 10000)
+        'httpStatus': errorCode ~/ 100,
+    });
+  }
+}

lib/features/community/post_compose_page.dart

@@ -0,0 +1,704 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/post_media_grid.dart';
+import 'package:patbond_flutter/features/community/community_controller.dart';
+import 'package:patbond_flutter/features/community/community_display.dart';
+import 'package:patbond_flutter/features/community/community_exceptions.dart';
+import 'package:patbond_flutter/features/community/community_models.dart';
+import 'package:patbond_flutter/features/community/community_repository.dart';
+import 'package:patbond_flutter/features/community/media_uploader.dart';
+import 'package:patbond_flutter/features/community/post_analytics.dart';
+import 'package:uuid/uuid.dart';
+
+/// 发布页（P3，05 号规范 §2.3；T3-17 真实数据整页落地）。
+///
+/// 结构：媒体选择区（[PostMediaEditGrid] 组装 [MediaUploader]）→ 正文
+/// → 类目（general / help）→ 位置占位；AppBar 三件套「取消 / 发布动态 /
+/// 发布」，另置「存草稿」。
+///
+/// 两条提交路径（15 号后端语义 §2.4）：
+///
+/// - **直接发布** = `createPost(status: draft)` 建草稿 → `PATCH
+///   {status: published}` 迁移发布。两步而非「一步建 published」是为了让
+///   「发布失败但草稿已保存」成为事实而不是话术：迁移这一步失败时草稿
+///   已在服务端，用户内容不会丢。
+/// - **存草稿退出** = 同一个 `createPost(status: draft)`（或对已有草稿
+///   `PATCH`），随后离页。
+///
+/// 幂等纪律：建草稿的 `Idempotency-Key` 由**本页持有**——网络失败重试
+/// 沿用同键（服务端命中首帖，不重复建帖）；表单一经改动即换新键
+/// （避免「同键异 payload」的 40905 常态化）。
+///
+/// 草稿管理最小实现：进页拉取「我的草稿」最新一条并恢复（05 §2.3 的
+/// 「已恢复上次草稿」提示条），完整草稿列表页留待（26 号报告 §7）。
+class PostComposePage extends StatefulWidget {
+  const PostComposePage({
+    required this.controller,
+    super.key,
+    this.entryPoint = PostEntryPoint.createTab,
+    this.analytics,
+    this.uploaderFactory,
+    this.now,
+  });
+
+  /// Tab 级单例（app.dart 装配）：发布成功后由调用方触发 Feed 刷新。
+  final CommunityController controller;
+
+  /// 入口归因（`post_create_started.entryPoint`）。
+  final PostEntryPoint entryPoint;
+
+  /// post 域埋点（发布漏斗五事件 + 媒体三段，媒体段经 [MediaUploader]）。
+  final PostAnalytics? analytics;
+
+  /// [MediaUploader] 构造口（测试 / 桌面实测替换选图与压缩层）。
+  final MediaUploaderFactory? uploaderFactory;
+
+  /// 时钟注入口（durationMs 断言用；缺省取当前时间）。
+  final DateTime Function()? now;
+
+  @override
+  State<PostComposePage> createState() => _PostComposePageState();
+}
+
+class _PostComposePageState extends State<PostComposePage> {
+  static const _maxContentLength = 1000;
+
+  final _contentController = TextEditingController();
+  final _uuid = const Uuid();
+
+  late final MediaUploader _uploader;
+
+  PostCategory _category = PostCategory.general;
+
+  /// 服务端草稿标识与乐观锁版本（建草稿成功或恢复草稿后非空）。
+  String? _draftPostId;
+  int? _draftVersion;
+
+  /// 恢复来的草稿既有媒体（uploader 只持本地选图，服务端媒体只读呈现）。
+  List<PostMediaItem> _draftMedia = const [];
+
+  /// 「已恢复上次草稿」提示条可见性。
+  bool _restoredBannerVisible = false;
+
+  /// 草稿恢复期间的输入监听抑制（恢复不是「首次输入」，不发 started）。
+  bool _restoring = false;
+
+  /// 本页是否基于先前保存/恢复的草稿发布（`fromDraft` 口径）。
+  bool _fromDraft = false;
+
+  /// 上一次同步到服务端的 ready assetId 签名（media 三态判定：
+  /// 与当前一致即 PATCH 缺席不动，不一致才整组替换）。
+  String? _syncedMediaSignature;
+
+  /// 建草稿幂等键（同键重放；表单改动即置 null 换新键）。
+  String? _idempotencyKey;
+
+  bool _publishing = false;
+  bool _savingDraft = false;
+
+  /// 发布失败横幅（页内停留供对照，不用 SnackBar）。
+  String? _publishErrorMessage;
+
+  /// 「草稿已保存」的伴随提示（发布失败时告知内容未丢）。
+  bool _draftPreservedHint = false;
+
+  /// 「已保存草稿 ✓」提示（保存动作后显示）。
+  bool _draftSavedHint = false;
+
+  /// 首次输入已上报 started。
+  bool _started = false;
+  DateTime? _startedAt;
+
+  /// 本页发布尝试序号（attemptSeq，从 1 起）。
+  int _publishAttemptSeq = 0;
+
+  CommunityController get _controller => widget.controller;
+
+  DateTime _nowValue() => (widget.now ?? DateTime.now)();
+
+  @override
+  void initState() {
+    super.initState();
+    _uploader = (widget.uploaderFactory ?? _defaultUploaderFactory)(
+      _controller.repository,
+      widget.analytics,
+    );
+    _uploader.addListener(_onUploaderChanged);
+    _contentController.addListener(_onContentChanged);
+    unawaited(_restoreLatestDraft());
+  }
+
+  static MediaUploader _defaultUploaderFactory(
+    CommunityRepository repository,
+    PostAnalytics? analytics,
+  ) => MediaUploader(repository: repository, analytics: analytics);
+
+  @override
+  void dispose() {
+    _uploader.removeListener(_onUploaderChanged);
+    // 在途上传作废（未 confirm 的 asset 弃引用，服务端超时清理兜底）。
+    _uploader.reset();
+    _uploader.dispose();
+    _contentController.dispose();
+    super.dispose();
+  }
+
+  // ---- 输入与状态 ----
+
+  String get _content => _contentController.text.trim();
+
+  bool get _isEmptyForm =>
+      _content.isEmpty && _uploader.isEmpty && _draftMedia.isEmpty;
+
+  /// 发布 gating（05 §2.2/§2.3 + 后端 content 必填）：正文非空、
+  /// 在场媒体全部 ready、无在途提交。
+  bool get _canPublish =>
+      _content.isNotEmpty &&
+      (_uploader.isEmpty || _uploader.allReady) &&
+      !_publishing &&
+      !_savingDraft;
+
+  void _onContentChanged() {
+    if (_restoring) return;
+    _markDirty();
+    _reportStartedOnce();
+    setState(() {});
+  }
+
+  void _onUploaderChanged() {
+    if (_uploader.items.isNotEmpty) _reportStartedOnce();
+    _markDirty();
+    setState(() {});
+  }
+
+  /// 表单一经改动即弃用旧幂等键（下次提交换新键，杜绝 40905 常态化）。
+  void _markDirty() {
+    _idempotencyKey = null;
+    _draftSavedHint = false;
+  }
+
+  void _reportStartedOnce() {
+    if (_started) return;
+    if (_content.isEmpty && _uploader.isEmpty) return;
+    _started = true;
+    _startedAt = _nowValue();
+    widget.analytics?.postCreateStarted(entryPoint: widget.entryPoint);
+  }
+
+  // ---- 草稿恢复（最小实现：最新一条）----
+
+  Future<void> _restoreLatestDraft() async {
+    try {
+      final page = await _controller.repository.listMyPosts(
+        limit: 1,
+        status: PostStatus.draft,
+      );
+      if (!mounted || page.items.isEmpty) return;
+      final draft = page.items.first;
+      _restoring = true;
+      _contentController.text = draft.content;
+      _restoring = false;
+      setState(() {
+        _draftPostId = draft.id;
+        _draftVersion = draft.version;
+        _draftMedia = draft.media;
+        // ai_creation（M4 预留读侧值）不在发布页可选集内，回落 general。
+        _category = draft.category == PostCategory.aiCreation
+            ? PostCategory.general
+            : draft.category;
+        _restoredBannerVisible = true;
+        _fromDraft = true;
+        _syncedMediaSignature = _mediaSignature();
+      });
+    } on ApiException {
+      // 草稿恢复失败静默降级为「新建」，不阻塞发布（不打扰）。
+    }
+  }
+
+  void _clearRestoredDraft() {
+    _restoring = true;
+    _contentController.clear();
+    _restoring = false;
+    setState(() {
+      _draftMedia = const [];
+      _restoredBannerVisible = false;
+      _idempotencyKey = null;
+    });
+  }
+
+  // ---- 媒体 ----
+
+  Future<void> _pickImages() async {
+    await _uploader.pickAndAdd();
+    if (!mounted) return;
+    if (_uploader.remainingSlots <= 0) {
+      _showSnackBar('最多可选 ${_uploader.maxImages} 张图片');
+    }
+  }
+
+  String _mediaSignature() => _uploader.items
+      .where((item) => item.isReady)
+      .map((item) => item.assetId)
+      .join(',');
+
+  /// 当前选图的挂接请求（全 ready 才可取；封面取首张）。
+  List<PostMediaAttachRequest>? _mediaAttachOrNull() =>
+      _uploader.isEmpty ? null : _uploader.buildAttachRequests();
+
+  // ---- 发布（建草稿 → 迁移发布）----
+
+  Future<void> _publish() async {
+    if (!_canPublish) return;
+    FocusScope.of(context).unfocus();
+    _publishAttemptSeq += 1;
+    setState(() {
+      _publishing = true;
+      _publishErrorMessage = null;
+      _draftPreservedHint = false;
+    });
+    final signature = _mediaSignature();
+    final fromDraft = _fromDraft && _draftPostId != null;
+    try {
+      if (_draftPostId == null) {
+        final key = _idempotencyKey ??= _uuid.v4();
+        final draft = await _controller.repository.createPost(
+          CreatePostRequest(
+            content: _content,
+            category: _category,
+            status: PostStatus.draft,
+            media: _mediaAttachOrNull(),
+          ),
+          idempotencyKey: key,
+        );
+        _draftPostId = draft.id;
+        _draftVersion = draft.version;
+        _syncedMediaSignature = signature;
+      }
+      await _patchPublish(signature);
+      if (!mounted) return;
+      widget.analytics?.postPublishSucceeded(
+        durationMs: _elapsedSinceStart(),
+        mediaCount: _uploader.items.length + _keptDraftMediaCount(signature),
+        // 话题（TopicChip / 话题选择 sheet）无契约端点，M3 恒 0。
+        topicCount: 0,
+        textLength: _content.length,
+        fromDraft: fromDraft,
+      );
+      _uploader.reset();
+      Navigator.of(context).pop(true);
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      _handlePublishError(error);
+    } finally {
+      if (mounted) setState(() => _publishing = false);
+    }
+  }
+
+  /// PATCH 迁移发布；乐观锁过期（40902，别处改过草稿）自动刷新 version
+  /// 重提一次。已发布帖重复提交为幂等 no-op（15 号 §2.4），弱网重放安全。
+  Future<void> _patchPublish(String signature) async {
+    final media = signature == _syncedMediaSignature
+        ? null // 缺席不动（服务端媒体与本地选图一致）
+        : _mediaAttachOrNull() ?? const <PostMediaAttachRequest>[];
+    UpdatePostRequest request(int version) => UpdatePostRequest(
+      version: version,
+      content: _content,
+      category: _category,
+      publish: true,
+      media: media,
+    );
+    try {
+      await _controller.repository.updatePost(
+        _draftPostId!,
+        request(_draftVersion!),
+      );
+    } on PostVersionConflictException {
+      final latest = await _controller.repository.getPost(_draftPostId!);
+      _draftVersion = latest.version;
+      await _controller.repository.updatePost(
+        _draftPostId!,
+        request(latest.version),
+      );
+    }
+    _syncedMediaSignature = signature;
+  }
+
+  /// 恢复草稿的服务端既有媒体在本次发布中被保留的张数（mediaCount 口径）。
+  int _keptDraftMediaCount(String signature) =>
+      signature == _syncedMediaSignature && _uploader.isEmpty
+      ? _draftMedia.length
+      : 0;
+
+  int _elapsedSinceStart() {
+    final startedAt = _startedAt;
+    if (startedAt == null) return 0;
+    return _nowValue().difference(startedAt).inMilliseconds;
+  }
+
+  void _handlePublishError(ApiException error) {
+    final reason = postPublishFailureReasonOf(error);
+    if (reason != null) {
+      widget.analytics?.postPublishFailed(
+        reason: reason,
+        attemptSeq: _publishAttemptSeq,
+        errorCode: error is ApiBusinessException ? error.code : null,
+      );
+    }
+    if (error is IdempotencyMismatchException) {
+      // 同键异 payload：弃用旧键，下次提交换新键即可成功。
+      _idempotencyKey = null;
+    }
+    if (error is PostNotFoundException) {
+      // 草稿在别处被删：解除关联，重试走全新建草稿。
+      _draftPostId = null;
+      _draftVersion = null;
+      _fromDraft = false;
+    }
+    setState(() {
+      _publishErrorMessage = postPublishErrorMessage(error);
+      // 草稿已在服务端 → 明确告知内容未丢（本单核心提示语义）。
+      _draftPreservedHint = _draftPostId != null;
+    });
+  }
+
+  // ---- 存草稿 ----
+
+  Future<bool> _saveDraft(DraftSaveTrigger trigger) async {
+    if (_isEmptyForm) return true;
+    if (_content.isEmpty) {
+      _showSnackBar('请先写点什么再保存草稿');
+      return false;
+    }
+    if (_uploader.hasBusyItem) {
+      _showSnackBar('图片还在上传中，请稍候再保存草稿');
+      return false;
+    }
+    if (_uploader.hasFailure) {
+      _showSnackBar('有图片上传失败，请重试或删除后再保存草稿');
+      return false;
+    }
+    setState(() {
+      _savingDraft = true;
+      _publishErrorMessage = null;
+    });
+    final signature = _mediaSignature();
+    try {
+      if (_draftPostId == null) {
+        final key = _idempotencyKey ??= _uuid.v4();
+        final draft = await _controller.repository.createPost(
+          CreatePostRequest(
+            content: _content,
+            category: _category,
+            status: PostStatus.draft,
+            media: _mediaAttachOrNull(),
+          ),
+          idempotencyKey: key,
+        );
+        _draftPostId = draft.id;
+        _draftVersion = draft.version;
+      } else {
+        final updated = await _controller.repository.updatePost(
+          _draftPostId!,
+          UpdatePostRequest(
+            version: _draftVersion!,
+            content: _content,
+            category: _category,
+            media: signature == _syncedMediaSignature
+                ? null
+                : _mediaAttachOrNull() ?? const <PostMediaAttachRequest>[],
+          ),
+        );
+        _draftVersion = updated.version;
+      }
+      _syncedMediaSignature = signature;
+      _fromDraft = true;
+      widget.analytics?.postDraftSaved(
+        trigger: trigger,
+        mediaCount: _uploader.items.length + _keptDraftMediaCount(signature),
+      );
+      if (mounted) setState(() => _draftSavedHint = true);
+      return true;
+    } on ApiException catch (error) {
+      if (mounted) _showSnackBar(draftSaveErrorMessage(error));
+      return false;
+    } finally {
+      if (mounted) setState(() => _savingDraft = false);
+    }
+  }
+
+  /// 「不保留」：已落服务端的草稿一并软删（`post_deleted` 触点）。
+  Future<void> _discardDraft() async {
+    final draftId = _draftPostId;
+    if (draftId == null) return;
+    try {
+      await _controller.repository.deletePost(draftId);
+      widget.analytics?.postDeleted();
+    } on ApiException {
+      // 删除失败不拦住离页（草稿留在服务端，下次进页可恢复）。
+    }
+  }
+
+  // ---- 离页 ----
+
+  Future<void> _onCancel() async {
+    if (_publishing || _savingDraft) return;
+    if (_isEmptyForm) {
+      Navigator.of(context).pop(false);
+      return;
+    }
+    final choice = await showDialog<_ExitChoice>(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('保留草稿？'),
+        content: const Text('保留后下次进入发布页可继续编辑。'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context, _ExitChoice.keepEditing),
+            child: const Text('继续编辑'),
+          ),
+          TextButton(
+            onPressed: () => Navigator.pop(context, _ExitChoice.discard),
+            child: const Text('不保留'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.pop(context, _ExitChoice.keep),
+            child: const Text('保留'),
+          ),
+        ],
+      ),
+    );
+    if (!mounted || choice == null || choice == _ExitChoice.keepEditing) return;
+    if (choice == _ExitChoice.discard) {
+      await _discardDraft();
+      if (!mounted) return;
+      Navigator.of(context).pop(false);
+      return;
+    }
+    final saved = await _saveDraft(DraftSaveTrigger.onExit);
+    if (!mounted || !saved) return;
+    Navigator.of(context).pop(false);
+  }
+
+  void _showSnackBar(String message) {
+    ScaffoldMessenger.of(
+      context,
+    ).showSnackBar(SnackBar(content: Text(message)));
+  }
+
+  // ---- 渲染 ----
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    return PopScope(
+      canPop: _isEmptyForm && !_publishing && !_savingDraft,
+      onPopInvokedWithResult: (didPop, _) {
+        if (!didPop) unawaited(_onCancel());
+      },
+      child: Scaffold(
+        appBar: AppBar(
+          leadingWidth: 76,
+          leading: Center(
+            child: TextButton(
+              onPressed: _publishing ? null : () => unawaited(_onCancel()),
+              style: TextButton.styleFrom(foregroundColor: AppColors.ink),
+              child: const Text('取消'),
+            ),
+          ),
+          title: const Text('发布动态'),
+          actions: [
+            TextButton(
+              onPressed: _publishing || _savingDraft
+                  ? null
+                  : () => unawaited(_saveDraft(DraftSaveTrigger.manual)),
+              child: const Text('存草稿'),
+            ),
+            const SizedBox(width: 4),
+            FilledButton(
+              style: FilledButton.styleFrom(
+                minimumSize: const Size(0, 40),
+                padding: const EdgeInsets.symmetric(horizontal: 20),
+              ),
+              onPressed: _canPublish ? () => unawaited(_publish()) : null,
+              child: _publishing
+                  ? const SizedBox.square(
+                      dimension: 18,
+                      child: CircularProgressIndicator(
+                        strokeWidth: 2,
+                        color: Colors.white,
+                      ),
+                    )
+                  : const Text('发布'),
+            ),
+            const SizedBox(width: 12),
+          ],
+        ),
+        body: ListView(
+          padding: const EdgeInsets.fromLTRB(16, 12, 16, 28),
+          children: [
+            if (_restoredBannerVisible) ...[
+              _RestoredDraftBanner(onClear: _clearRestoredDraft),
+              const SizedBox(height: 12),
+            ],
+            if (_publishErrorMessage != null) ...[
+              InlineErrorBanner(message: _publishErrorMessage!),
+              if (_draftPreservedHint) ...[
+                const SizedBox(height: 6),
+                const Text(
+                  '草稿已保存，可稍后继续发布',
+                  style: TextStyle(fontSize: 12, color: AppColors.inkSoft),
+                ),
+              ],
+              const SizedBox(height: 12),
+            ],
+            if (_draftSavedHint) ...[
+              const Text(
+                '已保存草稿 ✓',
+                style: TextStyle(fontSize: 12, color: AppColors.inkSoft),
+              ),
+              const SizedBox(height: 12),
+            ],
+            ..._mediaSection(),
+            if (_uploader.hasBusyItem) ...[
+              const SizedBox(height: 8),
+              _UploadSummaryBar(
+                progress: _uploader.overallProgress,
+                readyCount: _uploader.readyCount,
+                total: _uploader.items.length,
+              ),
+            ],
+            const SizedBox(height: 16),
+            TextField(
+              controller: _contentController,
+              minLines: 6,
+              maxLines: null,
+              maxLength: _maxContentLength,
+              keyboardType: TextInputType.multiline,
+              decoration: const InputDecoration(
+                hintText: '分享毛孩子的日常，或向宠友求助…',
+                alignLabelWithHint: true,
+              ),
+            ),
+            const SizedBox(height: 12),
+            Text('分类', style: theme.textTheme.bodySmall),
+            const SizedBox(height: 7),
+            Wrap(
+              spacing: 8,
+              children: [
+                for (final entry in const [
+                  (PostCategory.general, '日常分享'),
+                  (PostCategory.help, '求助'),
+                ])
+                  ChoiceChip(
+                    label: Text(entry.$2),
+                    selected: _category == entry.$1,
+                    onSelected: (_) {
+                      _markDirty();
+                      setState(() => _category = entry.$1);
+                    },
+                  ),
+              ],
+            ),
+            const SizedBox(height: 12),
+            ListTile(
+              contentPadding: EdgeInsets.zero,
+              leading: const Icon(Icons.location_on_outlined),
+              title: const Text('添加位置（选填）'),
+              trailing: const Icon(Icons.chevron_right),
+              onTap: () => _showSnackBar('位置功能即将上线'),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  List<Widget> _mediaSection() {
+    final showDraftMedia = _uploader.isEmpty && _draftMedia.isNotEmpty;
+    return [
+      PostMediaEditGrid(
+        items: _uploader.items,
+        canAdd: _uploader.remainingSlots > 0,
+        onAdd: _uploader.isPicking ? null : () => unawaited(_pickImages()),
+        onRemove: _uploader.remove,
+        onRetry: _uploader.retry,
+      ),
+      if (showDraftMedia) ...[
+        const SizedBox(height: 8),
+        Text(
+          '草稿已含 ${_draftMedia.length} 张图片（发布时保留；重新选图将整组替换）',
+          style: const TextStyle(fontSize: 12, color: AppColors.inkSoft),
+        ),
+      ],
+    ];
+  }
+}
+
+enum _ExitChoice { keep, discard, keepEditing }
+
+/// 「已恢复上次草稿」提示条（05 §2.3：surfaceTint 底、圆角 sm12）。
+class _RestoredDraftBanner extends StatelessWidget {
+  const _RestoredDraftBanner({required this.onClear});
+
+  final VoidCallback onClear;
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      padding: const EdgeInsets.fromLTRB(12, 4, 4, 4),
+      decoration: const BoxDecoration(
+        color: AppColors.surfaceTint,
+        borderRadius: BorderRadius.all(Radius.circular(AppRadius.sm)),
+      ),
+      child: Row(
+        children: [
+          const Expanded(
+            child: Text(
+              '已恢复上次草稿',
+              style: TextStyle(fontSize: 12, color: AppColors.primaryDark),
+            ),
+          ),
+          TextButton(onPressed: onClear, child: const Text('清空')),
+        ],
+      ),
+    );
+  }
+}
+
+/// 页级上传汇总条（05 §3.3 末段：线性进度 + 「正在上传 n/N」）。
+class _UploadSummaryBar extends StatelessWidget {
+  const _UploadSummaryBar({
+    required this.progress,
+    required this.readyCount,
+    required this.total,
+  });
+
+  final double progress;
+  final int readyCount;
+  final int total;
+
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      children: [
+        Text(
+          '正在上传 $readyCount/$total',
+          style: const TextStyle(fontSize: 12, color: AppColors.inkSoft),
+        ),
+        const SizedBox(width: 10),
+        Expanded(
+          child: LinearProgressIndicator(
+            value: progress,
+            minHeight: 4,
+            color: AppColors.primaryStrong,
+            backgroundColor: AppColors.surfaceTint,
+          ),
+        ),
+      ],
+    );
+  }
+}

lib/features/community/toggle_sync.dart

@@ -0,0 +1,142 @@
+import 'dart:async';
+
+/// 服务端返回的开关权威终态（LikeState / BookmarkState 的统一投影）。
+class ToggleOutcome {
+  const ToggleOutcome({required this.active, required this.count});
+
+  final bool active;
+  final int count;
+}
+
+/// 内存副本当前读数（乐观翻转与回滚校验的基准）。
+class ToggleReading {
+  const ToggleReading({required this.active, required this.count});
+
+  final bool active;
+  final int count;
+}
+
+/// 点赞 / 收藏共用的乐观更新小状态机（03 号评估 §3 定稿的数据层部分）：
+/// **乐观翻转 + 快照回滚 + 单飞合并意图 + 代次守卫**。字段读写与端点
+/// 全部参数化，like / bookmark 各持一实例，不复制两份逻辑。
+///
+/// 对每个 id 的一轮「操作链」：
+/// 1. 点击立即经 [write] 翻转内存副本（UI 同帧反馈由持有方 notify）；
+/// 2. 非在途则记快照、发请求（PUT/DELETE 语义幂等，重放安全）；
+///    在途则只把新意图并入 pendingTarget，**不发新请求**（单飞）；
+/// 3. 成功：pendingTarget 与已确认态不一致 → 以 pendingTarget 补发一次
+///    （连续快速点击至多两个在途请求，中间抖动全被合并）；一致 → 用服务端
+///    权威计数覆盖乐观计数（吸收他人并发造成的偏差），清状态；
+/// 4. 失败：恢复链起点快照（先校验 id 仍可读且当前态仍是本轮乐观目标，
+///    避免覆盖新数据），经 [onError] 轻提示，**不自动重试**；
+/// 5. 代次守卫：响应到达时 [generation] 与链起点不符（期间发生过刷新，
+///    列表已被服务端数据整体替换）→ 丢弃该响应，不覆盖不回滚。
+class ToggleSync {
+  ToggleSync({
+    required this._read,
+    required this._write,
+    required this._send,
+    required this._generation,
+    this._onError,
+  });
+
+  final ToggleReading? Function(String id) _read;
+  final void Function(String id, bool active, int count) _write;
+  final Future<ToggleOutcome> Function(String id, bool target) _send;
+  final int Function() _generation;
+  final void Function(String id, Object error)? _onError;
+
+  final Map<String, _ToggleChain> _chains = {};
+
+  /// 该 id 是否有请求在途（测试与调试观测口）。
+  bool isInFlight(String id) => _chains.containsKey(id);
+
+  /// 翻转一次。同步完成乐观写入；网络往返在后台收敛，不外抛。
+  void toggle(String id) {
+    final current = _read(id);
+    if (current == null) return; // 已不在列表（刷新剔除），本次点击作废。
+    final target = !current.active;
+    final optimisticCount = target
+        ? current.count + 1
+        : (current.count - 1 < 0 ? 0 : current.count - 1);
+    _write(id, target, optimisticCount);
+
+    final chain = _chains[id];
+    if (chain != null) {
+      chain.pendingTarget = target;
+      return;
+    }
+    final started = _ToggleChain(
+      snapshot: current,
+      generation: _generation(),
+      target: target,
+    );
+    _chains[id] = started;
+    unawaited(_run(id, started));
+  }
+
+  /// 登出 / 整体刷新清态：丢弃全部链（在途响应因代次或链失配被丢弃）。
+  void reset() => _chains.clear();
+
+  Future<void> _run(String id, _ToggleChain chain) async {
+    while (true) {
+      ToggleOutcome outcome;
+      try {
+        outcome = await _send(id, chain.target);
+      } catch (error) {
+        if (_chains[id] == chain && _generation() == chain.generation) {
+          final current = _read(id);
+          final lastTarget = chain.pendingTarget ?? chain.target;
+          // 回滚前校验：id 仍可读且当前态仍是本轮乐观写入的目标态。
+          if (current != null && current.active == lastTarget) {
+            _write(id, chain.snapshot.active, chain.snapshot.count);
+          }
+          _onError?.call(id, error);
+        }
+        _release(id, chain);
+        return;
+      }
+
+      if (_chains[id] != chain || _generation() != chain.generation) {
+        _release(id, chain);
+        return; // 代次不符 / 已被 reset：丢弃响应，不覆盖不回滚。
+      }
+
+      final pending = chain.pendingTarget;
+      if (pending != null && pending != outcome.active) {
+        chain.target = pending;
+        chain.pendingTarget = null;
+        continue; // 以最终意图补发一次。
+      }
+
+      _write(id, outcome.active, outcome.count);
+      _release(id, chain);
+      return;
+    }
+  }
+
+  void _release(String id, _ToggleChain chain) {
+    if (_chains[id] == chain) _chains.remove(id);
+  }
+}
+
+/// 一轮操作链的在途状态。
+class _ToggleChain {
+  _ToggleChain({
+    required this.snapshot,
+    required this.generation,
+    required this.target,
+  });
+
+  /// 链起点快照（回滚基准）。
+  final ToggleReading snapshot;
+
+  /// 链起点的刷新代次。
+  final int generation;
+
+  /// 当前在途请求的目标态。
+  bool target;
+
+  /// 在途期间用户新点出的最终意图（完成后据此决定是否补发）。
+  bool? pendingTarget;
+}

lib/features/create/create_page.dart

@@ -0,0 +1,563 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/data/demo_data.dart';
+import 'package:patbond_flutter/models/models.dart';
+import 'package:patbond_flutter/state/app_state.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+enum CreationMode { image, video }
+
+/// 创作 Tab。
+///
+/// **AI 生成模拟（700/650/500ms 假延时、风格/模型/分辨率设置、结果卡）
+/// 属 M4 范围，T3-17 原样保留**；社区发布半边自 T3-17 起改由真实发布页
+/// （`PostComposePage`，push 全屏）承担——本页顶部「发布动态」入口即其
+/// 入口（entryPoint=create_tab），`AppState.publishPost` demo 发布流退役。
+class CreatePage extends StatefulWidget {
+  const CreatePage({
+    required this.appState,
+    required this.onOpenCompose,
+    super.key,
+  });
+
+  final AppState appState;
+
+  /// 真实发布页入口（主壳 push，发布成功后回首页 Feed 刷新）。
+  final VoidCallback onOpenCompose;
+
+  @override
+  State<CreatePage> createState() => _CreatePageState();
+}
+
+class _CreatePageState extends State<CreatePage> {
+  final titleController = TextEditingController();
+  final contentController = TextEditingController();
+  CreationMode mode = CreationMode.image;
+  CreationStyle selectedStyle = creationStyles.first;
+  String selectedModel = 'Patbond-V1';
+  String duration = '5 秒';
+  String resolution = '1080P';
+  bool upscaling = true;
+  bool uploaded = false;
+  bool uploading = false;
+  bool generating = false;
+  int generationStep = 0;
+  String? resultUrl;
+  List<String> tags = ['可爱修勾', 'AI宠物'];
+
+  @override
+  void dispose() {
+    titleController.dispose();
+    contentController.dispose();
+    super.dispose();
+  }
+
+  Future<void> simulateUpload() async {
+    setState(() => uploading = true);
+    await Future<void>.delayed(const Duration(milliseconds: 700));
+    if (!mounted) return;
+    setState(() {
+      uploading = false;
+      uploaded = true;
+      resultUrl = null;
+    });
+  }
+
+  Future<void> generate() async {
+    if (!uploaded) {
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('请先选择一张宠物照片')));
+      return;
+    }
+    setState(() {
+      generating = true;
+      generationStep = 1;
+    });
+    for (var step = 2; step <= 4; step++) {
+      await Future<void>.delayed(const Duration(milliseconds: 650));
+      if (!mounted) return;
+      setState(() => generationStep = step);
+    }
+    await Future<void>.delayed(const Duration(milliseconds: 500));
+    if (!mounted) return;
+    setState(() {
+      generating = false;
+      resultUrl = selectedStyle.image;
+      titleController.text = mode == CreationMode.image
+          ? '豆豆的${selectedStyle.title}冒险'
+          : '豆豆的 AI 萌宠短片';
+      contentController.text = '刚刚用 Patbond 创作了新作品，快来看看豆豆的新造型吧！✨';
+    });
+  }
+
+  Future<void> addTag() async {
+    final controller = TextEditingController();
+    final value = await showDialog<String>(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('添加话题'),
+        content: TextField(
+          controller: controller,
+          autofocus: true,
+          decoration: const InputDecoration(hintText: '输入话题名称'),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: const Text('取消'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.pop(context, controller.text.trim()),
+            child: const Text('添加'),
+          ),
+        ],
+      ),
+    );
+    controller.dispose();
+    if (value == null || value.isEmpty || tags.contains(value)) return;
+    setState(() => tags = [...tags, value]);
+  }
+
+  /// AI 作品的社区发布留待 M4：AI 结果是生成图（无本地文件、无 media
+  /// asset），走不了两步上传，故不接真实发布链路；demo 发布流（写
+  /// `AppState.posts`）随 T3-17 退役，此处只余占位提示。
+  void publish() {
+    ScaffoldMessenger.of(context).showSnackBar(
+      const SnackBar(content: Text('AI 作品发布随 AI 创作能力上线（M4）；发布普通动态请用上方「发布动态」')),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ListView(
+      padding: const EdgeInsets.fromLTRB(16, 12, 16, 28),
+      children: [
+        _ComposeEntryCard(onTap: widget.onOpenCompose),
+        const SizedBox(height: 18),
+        SegmentedButton<CreationMode>(
+          segments: const [
+            ButtonSegment(
+              value: CreationMode.image,
+              icon: Icon(Icons.image_outlined),
+              label: Text('AI 图片'),
+            ),
+            ButtonSegment(
+              value: CreationMode.video,
+              icon: Icon(Icons.movie_creation_outlined),
+              label: Text('AI 视频'),
+            ),
+          ],
+          selected: {mode},
+          showSelectedIcon: false,
+          onSelectionChanged: (value) => setState(() {
+            mode = value.first;
+            resultUrl = null;
+          }),
+        ),
+        const SizedBox(height: 16),
+        _UploadCard(
+          uploaded: uploaded,
+          uploading: uploading,
+          imageUrl: widget.appState.pet.avatarUrl,
+          onTap: simulateUpload,
+          onRemove: () => setState(() {
+            uploaded = false;
+            resultUrl = null;
+          }),
+        ),
+        const SizedBox(height: 16),
+        SectionCard(
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Text('生成设置', style: Theme.of(context).textTheme.titleMedium),
+              const SizedBox(height: 14),
+              DropdownButtonFormField<String>(
+                initialValue: selectedModel,
+                decoration: const InputDecoration(labelText: '创作模型'),
+                items: ['Patbond-V1', 'Pet-Art Pro', 'Cute Motion']
+                    .map(
+                      (model) =>
+                          DropdownMenuItem(value: model, child: Text(model)),
+                    )
+                    .toList(),
+                onChanged: (value) {
+                  if (value != null) setState(() => selectedModel = value);
+                },
+              ),
+              if (mode == CreationMode.video) ...[
+                const SizedBox(height: 12),
+                _ChoiceRow(
+                  title: '视频时长',
+                  values: const ['5 秒', '10 秒', '15 秒'],
+                  selected: duration,
+                  onChanged: (value) => setState(() => duration = value),
+                ),
+              ],
+              const SizedBox(height: 12),
+              _ChoiceRow(
+                title: '分辨率',
+                values: const ['720P', '1080P', '2K'],
+                selected: resolution,
+                onChanged: (value) => setState(() => resolution = value),
+              ),
+              SwitchListTile.adaptive(
+                contentPadding: EdgeInsets.zero,
+                title: const Text('高清增强'),
+                subtitle: const Text('提升毛发与眼睛细节'),
+                value: upscaling,
+                onChanged: (value) => setState(() => upscaling = value),
+              ),
+            ],
+          ),
+        ),
+        const SizedBox(height: 18),
+        Text('热门风格', style: Theme.of(context).textTheme.titleLarge),
+        const SizedBox(height: 10),
+        SizedBox(
+          height: 150,
+          child: ListView.separated(
+            scrollDirection: Axis.horizontal,
+            itemCount: creationStyles.length,
+            separatorBuilder: (_, _) => const SizedBox(width: 10),
+            itemBuilder: (context, index) {
+              final style = creationStyles[index];
+              final selected = style.id == selectedStyle.id;
+              return InkWell(
+                onTap: () => setState(() {
+                  selectedStyle = style;
+                  resultUrl = null;
+                }),
+                borderRadius: BorderRadius.circular(20),
+                child: Container(
+                  width: 125,
+                  decoration: BoxDecoration(
+                    border: Border.all(
+                      color: selected ? AppColors.primary : AppColors.border,
+                      width: selected ? 2 : 1,
+                    ),
+                    borderRadius: BorderRadius.circular(20),
+                  ),
+                  child: Stack(
+                    fit: StackFit.expand,
+                    children: [
+                      RemoteImage(
+                        url: style.image,
+                        borderRadius: BorderRadius.circular(18),
+                      ),
+                      DecoratedBox(
+                        decoration: BoxDecoration(
+                          borderRadius: BorderRadius.circular(18),
+                          gradient: LinearGradient(
+                            begin: Alignment.topCenter,
+                            end: Alignment.bottomCenter,
+                            colors: [
+                              Colors.transparent,
+                              AppColors.ink.withAlpha(204),
+                            ],
+                          ),
+                        ),
+                      ),
+                      Positioned(
+                        left: 12,
+                        right: 12,
+                        bottom: 10,
+                        child: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Text(
+                              style.title,
+                              style: const TextStyle(
+                                color: Colors.white,
+                                fontWeight: FontWeight.w800,
+                              ),
+                            ),
+                            Text(
+                              style.subtitle,
+                              style: const TextStyle(
+                                color: Colors.white70,
+                                fontSize: 10,
+                              ),
+                            ),
+                          ],
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              );
+            },
+          ),
+        ),
+        const SizedBox(height: 18),
+        if (generating) _GenerationProgress(step: generationStep),
+        FilledButton.icon(
+          style: FilledButton.styleFrom(
+            minimumSize: const Size.fromHeight(52),
+            backgroundColor: AppColors.ink,
+          ),
+          onPressed: generating ? null : generate,
+          icon: generating
+              ? const SizedBox.square(
+                  dimension: 18,
+                  child: CircularProgressIndicator(
+                    strokeWidth: 2,
+                    color: Colors.white,
+                  ),
+                )
+              : const Icon(Icons.auto_awesome),
+          label: Text(generating ? '正在生成…' : '开始生成'),
+        ),
+        if (resultUrl != null) ...[
+          const SizedBox(height: 18),
+          SectionCard(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Row(
+                  children: [
+                    const Icon(Icons.check_circle, color: AppColors.success),
+                    const SizedBox(width: 8),
+                    Text(
+                      '生成完成',
+                      style: Theme.of(context).textTheme.titleMedium,
+                    ),
+                  ],
+                ),
+                const SizedBox(height: 14),
+                AspectRatio(
+                  aspectRatio: 16 / 10,
+                  child: RemoteImage(
+                    url: resultUrl!,
+                    borderRadius: BorderRadius.circular(18),
+                  ),
+                ),
+                const SizedBox(height: 14),
+                TextField(
+                  controller: titleController,
+                  decoration: const InputDecoration(labelText: '发布标题（必填）'),
+                ),
+                const SizedBox(height: 12),
+                TextField(
+                  controller: contentController,
+                  maxLines: 3,
+                  decoration: const InputDecoration(labelText: '分享正文'),
+                ),
+                const SizedBox(height: 12),
+                Wrap(
+                  spacing: 8,
+                  runSpacing: 8,
+                  children: [
+                    ...tags.map(
+                      (tag) => InputChip(
+                        label: Text('#$tag'),
+                        onDeleted: () => setState(
+                          () =>
+                              tags = tags.where((item) => item != tag).toList(),
+                        ),
+                      ),
+                    ),
+                    ActionChip(
+                      avatar: const Icon(Icons.add, size: 16),
+                      label: const Text('话题'),
+                      onPressed: addTag,
+                    ),
+                  ],
+                ),
+                const SizedBox(height: 14),
+                const ListTile(
+                  contentPadding: EdgeInsets.zero,
+                  leading: Icon(Icons.location_on_outlined),
+                  title: Text('北京市 · 朝阳区'),
+                  trailing: Icon(Icons.chevron_right),
+                ),
+                FilledButton.icon(
+                  style: FilledButton.styleFrom(
+                    minimumSize: const Size.fromHeight(48),
+                  ),
+                  onPressed: publish,
+                  icon: const Icon(Icons.send_rounded),
+                  label: const Text('发布到社区'),
+                ),
+              ],
+            ),
+          ),
+        ],
+      ],
+    );
+  }
+}
+
+/// 真实发布入口（T3-17）：本页其余部分是 AI 创作模拟（M4），社区发帖
+/// 走这里 push 的发布页。
+class _ComposeEntryCard extends StatelessWidget {
+  const _ComposeEntryCard({required this.onTap});
+
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    return SectionCard(
+      padding: EdgeInsets.zero,
+      child: ListTile(
+        contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
+        leading: const CircleAvatar(
+          backgroundColor: AppColors.surfaceTint,
+          child: Icon(Icons.edit_outlined, color: AppColors.primary),
+        ),
+        title: const Text(
+          '发布动态',
+          style: TextStyle(fontWeight: FontWeight.w800),
+        ),
+        subtitle: const Text('写点文字、配上照片，分享给宠友'),
+        trailing: const Icon(Icons.chevron_right),
+        onTap: onTap,
+      ),
+    );
+  }
+}
+
+class _UploadCard extends StatelessWidget {
+  const _UploadCard({
+    required this.uploaded,
+    required this.uploading,
+    required this.imageUrl,
+    required this.onTap,
+    required this.onRemove,
+  });
+
+  final bool uploaded;
+  final bool uploading;
+  final String imageUrl;
+  final VoidCallback onTap;
+  final VoidCallback onRemove;
+
+  @override
+  Widget build(BuildContext context) {
+    return SectionCard(
+      child: SizedBox(
+        height: 190,
+        width: double.infinity,
+        child: uploading
+            ? const Column(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  CircularProgressIndicator(),
+                  SizedBox(height: 12),
+                  Text('正在读取宠物照片…'),
+                ],
+              )
+            : uploaded
+            ? Stack(
+                fit: StackFit.expand,
+                children: [
+                  RemoteImage(
+                    url: imageUrl,
+                    borderRadius: BorderRadius.circular(18),
+                  ),
+                  Positioned(
+                    right: 8,
+                    top: 8,
+                    child: IconButton.filled(
+                      tooltip: '移除照片',
+                      onPressed: onRemove,
+                      icon: const Icon(Icons.close),
+                    ),
+                  ),
+                ],
+              )
+            : InkWell(
+                onTap: onTap,
+                borderRadius: BorderRadius.circular(18),
+                child: const Column(
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  children: [
+                    CircleAvatar(
+                      radius: 28,
+                      child: Icon(Icons.add_photo_alternate_outlined),
+                    ),
+                    SizedBox(height: 12),
+                    Text(
+                      '选择宠物照片',
+                      style: TextStyle(fontWeight: FontWeight.w800),
+                    ),
+                    SizedBox(height: 4),
+                    Text('演示模式会读取豆豆的档案头像'),
+                  ],
+                ),
+              ),
+      ),
+    );
+  }
+}
+
+class _ChoiceRow extends StatelessWidget {
+  const _ChoiceRow({
+    required this.title,
+    required this.values,
+    required this.selected,
+    required this.onChanged,
+  });
+
+  final String title;
+  final List<String> values;
+  final String selected;
+  final ValueChanged<String> onChanged;
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Text(title, style: Theme.of(context).textTheme.bodySmall),
+        const SizedBox(height: 7),
+        Wrap(
+          spacing: 8,
+          children: values
+              .map(
+                (value) => ChoiceChip(
+                  label: Text(value),
+                  selected: value == selected,
+                  onSelected: (_) => onChanged(value),
+                ),
+              )
+              .toList(),
+        ),
+      ],
+    );
+  }
+}
+
+class _GenerationProgress extends StatelessWidget {
+  const _GenerationProgress({required this.step});
+
+  final int step;
+
+  @override
+  Widget build(BuildContext context) {
+    const labels = ['分析宠物特征', '加载风格模型', '生成画面细节', '高清增强与合成'];
+    return Padding(
+      padding: const EdgeInsets.only(bottom: 14),
+      child: SectionCard(
+        child: Column(
+          children: [
+            LinearProgressIndicator(value: step / labels.length),
+            const SizedBox(height: 12),
+            for (var index = 0; index < labels.length; index++)
+              ListTile(
+                dense: true,
+                contentPadding: EdgeInsets.zero,
+                leading: Icon(
+                  index < step ? Icons.check_circle : Icons.circle_outlined,
+                  color: index < step ? AppColors.success : AppColors.muted,
+                  size: 20,
+                ),
+                title: Text(labels[index]),
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/features/main/main_shell_page.dart

@@ -1,8 +1,78 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
+import 'package:patbond_flutter/analytics/analytics_page_name.dart';
+import 'package:patbond_flutter/analytics/page_view_tracker.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/features/community/community_controller.dart';
+import 'package:patbond_flutter/features/community/community_interaction_analytics.dart';
+import 'package:patbond_flutter/features/community/feed_analytics.dart';
+import 'package:patbond_flutter/features/community/media_uploader.dart';
+import 'package:patbond_flutter/features/community/post_analytics.dart';
+import 'package:patbond_flutter/features/community/post_compose_page.dart';
+import 'package:patbond_flutter/features/create/create_page.dart';
 import 'package:patbond_flutter/features/home/home_page.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/pet_analytics.dart';
+import 'package:patbond_flutter/features/pets/pets_controller.dart';
+import 'package:patbond_flutter/features/pets/pets_page.dart';
+import 'package:patbond_flutter/features/post/post_detail_page.dart';
+import 'package:patbond_flutter/features/profile/profile_page.dart';
+import 'package:patbond_flutter/features/services/services_page.dart';
+import 'package:patbond_flutter/state/app_state.dart';
+import 'package:patbond_flutter/widgets/common.dart';
 
 class MainShellPage extends StatefulWidget {
-  const MainShellPage({super.key});
+  const MainShellPage({
+    required this.appState,
+    required this.petsController,
+    required this.communityController,
+    super.key,
+    this.currentUserId,
+    this.petAnalytics,
+    this.healthRecordAnalytics,
+    this.feedAnalytics,
+    this.interactionAnalytics,
+    this.postAnalytics,
+    this.mediaUploaderFactory,
+    this.pageViewTracker,
+    this.onLogout,
+  });
+
+  final AppState appState;
+
+  /// 宠物档案状态（T2-11 拆出的独立 pets feature；档案 Tab 数据源）。
+  final PetsController petsController;
+
+  /// 社区状态（T3-12 数据层；首页 Feed segment 数据源，T3-14 接线）。
+  final CommunityController communityController;
+
+  /// 当前登录用户 id（详情页评论删除入口 / 关注钮自见性的 UI 判定）。
+  final String? currentUserId;
+
+  /// pet 域埋点强类型封装（建宠漏斗三事件）。
+  final PetAnalytics? petAnalytics;
+
+  /// health_record 域埋点强类型封装（T2-13 创建漏斗三事件 + viewed）。
+  final HealthRecordAnalytics? healthRecordAnalytics;
+
+  /// feed 域埋点（T3-14 聚合曝光 + 加载失败）。
+  final FeedAnalytics? feedAnalytics;
+
+  /// 互动域埋点（T3-16 评论成败对 + 关注对；详情页消费）。
+  final CommunityInteractionAnalytics? interactionAnalytics;
+
+  /// post 域埋点（T3-17 发布漏斗五事件 + 媒体三段；发布页消费）。
+  final PostAnalytics? postAnalytics;
+
+  /// 发布页 [MediaUploader] 构造口（桌面实测 / 测试替换选图与压缩层）。
+  final MediaUploaderFactory? mediaUploaderFactory;
+
+  /// Tab 曝光补点（IndexedStack 切换不产生路由事件，03 号评估 §3.2）。
+  final PageViewTracker? pageViewTracker;
+
+  /// 退出登录：调 logout 接口并清会话，认证状态机自动回登录页。
+  final Future<void> Function()? onLogout;
 
   @override
   State<MainShellPage> createState() => _MainShellPageState();
@@ -10,72 +80,207 @@ class MainShellPage extends StatefulWidget {
 
 class _MainShellPageState extends State<MainShellPage> {
   int currentIndex = 0;
+  bool showPersonalServices = false;
 
-  final pages = const [
-    HomePage(),
-    Center(child: Text('发现')),
-    Center(child: Text('发布')),
-    Center(child: Text('消息')),
-    Center(child: Text('我的')),
+  static const titles = ['首页', '创作中心', '健康档案', '本地服务', '我的资料'];
+
+  /// Tab 索引 → pageName 枚举（03 号评估 §3.2 映射表；档案 Tab 自 T2-12
+  /// 起为真实宠物列表，页名由 pet_archive 改报 pet_list，06 §5.2 字典 v2）。
+  static const _tabPages = [
+    AnalyticsPageName.home,
+    AnalyticsPageName.create,
+    AnalyticsPageName.petList,
+    AnalyticsPageName.services,
+    AnalyticsPageName.profile,
   ];
 
   @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      body: pages[currentIndex],
-      bottomNavigationBar: NavigationBarTheme(
-        data: NavigationBarThemeData(
-          backgroundColor: Colors.white,
-          indicatorColor: Colors.red.shade50,
-          labelTextStyle: WidgetStateProperty.all(
-            const TextStyle(
-              fontSize: 12,
-              fontWeight: FontWeight.w600,
-            ),
-          ),
-          iconTheme: WidgetStateProperty.resolveWith((states) {
-            if (states.contains(WidgetState.selected)) {
-              return const IconThemeData(color: Colors.red);
-            }
-            return const IconThemeData(color: Colors.grey);
-          }),
-        ),
-        child: NavigationBar(
-          selectedIndex: currentIndex,
-          onDestinationSelected: (index) {
-            setState(() {
-              currentIndex = index;
-            });
-          },
-          destinations: const [
-            NavigationDestination(
-              icon: Icon(Icons.home_outlined),
-              selectedIcon: Icon(Icons.home),
-              label: '首页',
-            ),
-            NavigationDestination(
-              icon: Icon(Icons.explore_outlined),
-              selectedIcon: Icon(Icons.explore),
-              label: '发现',
-            ),
-            NavigationDestination(
-              icon: Icon(Icons.add_circle_outline),
-              selectedIcon: Icon(Icons.add_circle),
-              label: '发布',
-            ),
-            NavigationDestination(
-              icon: Icon(Icons.notifications_outlined),
-              selectedIcon: Icon(Icons.notifications),
-              label: '消息',
-            ),
-            NavigationDestination(
-              icon: Icon(Icons.person_outline),
-              selectedIcon: Icon(Icons.person),
-              label: '我的',
-            ),
-          ],
+  void initState() {
+    super.initState();
+    // 初始 Tab 曝光补一次（03 号评估 §3.2 手动补点 1）。
+    widget.pageViewTracker?.reportTab(_tabPages[currentIndex]);
+  }
+
+  void selectTab(int index) {
+    setState(() => currentIndex = index);
+    widget.pageViewTracker?.reportTab(_tabPages[index]);
+  }
+
+  void openServices(bool personal) {
+    setState(() {
+      showPersonalServices = personal;
+      currentIndex = 3;
+    });
+    widget.pageViewTracker?.reportTab(_tabPages[3]);
+  }
+
+  /// 帖子详情（T3-15：真实数据整页；Feed 卡片与详情共享
+  /// communityController，互动状态跨页一致）。
+  void openPost(String postId) {
+    Navigator.of(context).push(
+      MaterialPageRoute<void>(
+        settings: RouteSettings(name: AnalyticsPageName.postDetail.pageName),
+        builder: (context) => PostDetailPage(
+          controller: widget.communityController,
+          postId: postId,
+          currentUserId: widget.currentUserId,
+          analytics: widget.interactionAnalytics,
         ),
       ),
     );
   }
+
+  /// 发布页（T3-17：真实发布链路）。发布成功后回首页 Feed 并整体刷新，
+  /// 新帖按 `(published_at DESC, id DESC)` 落在首位（跨客户端同一序）。
+  Future<void> openCompose(PostEntryPoint entryPoint) async {
+    final published = await Navigator.of(context).push<bool>(
+      MaterialPageRoute<bool>(
+        settings: RouteSettings(name: AnalyticsPageName.postForm.pageName),
+        builder: (context) => PostComposePage(
+          controller: widget.communityController,
+          entryPoint: entryPoint,
+          analytics: widget.postAnalytics,
+          uploaderFactory: widget.mediaUploaderFactory,
+        ),
+      ),
+    );
+    if (!mounted || published != true) return;
+    selectTab(0);
+    unawaited(widget.communityController.refresh());
+    ScaffoldMessenger.of(
+      context,
+    ).showSnackBar(const SnackBar(content: Text('已发布，去首页看看吧 🐾')));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AnimatedBuilder(
+      animation: widget.appState,
+      builder: (context, _) {
+        if (!widget.appState.isReady) {
+          return const Scaffold(
+            body: Center(child: CircularProgressIndicator()),
+          );
+        }
+
+        final pages = [
+          HomePage(
+            appState: widget.appState,
+            communityController: widget.communityController,
+            feedAnalytics: widget.feedAnalytics,
+            isActive: currentIndex == 0,
+            onOpenServices: openServices,
+            onOpenCompose: () => openCompose(PostEntryPoint.feed),
+            onOpenPost: openPost,
+          ),
+          CreatePage(
+            appState: widget.appState,
+            // T3-17：发布半边已真实化（发布页 push），AI 生成模拟原样留 M4。
+            onOpenCompose: () => openCompose(PostEntryPoint.createTab),
+          ),
+          PetsPage(
+            controller: widget.petsController,
+            analytics: widget.petAnalytics,
+            healthAnalytics: widget.healthRecordAnalytics,
+          ),
+          ServicesPage(
+            showPersonal: showPersonalServices,
+            locationWeather: widget.appState.locationWeather,
+          ),
+          ProfilePage(appState: widget.appState, onLogout: widget.onLogout),
+        ];
+
+        return Scaffold(
+          appBar: AppBar(
+            backgroundColor: Colors.white.withAlpha(245),
+            surfaceTintColor: Colors.transparent,
+            scrolledUnderElevation: 1,
+            centerTitle: true,
+            title: Text(
+              titles[currentIndex],
+              style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w800),
+            ),
+            leadingWidth: 118,
+            leading: InkWell(
+              onTap: () => selectTab(2),
+              borderRadius: BorderRadius.circular(24),
+              child: Padding(
+                padding: const EdgeInsets.only(left: 14),
+                child: Row(
+                  children: [
+                    RemoteImage(
+                      url: widget.appState.pet.avatarUrl,
+                      width: 36,
+                      height: 36,
+                      borderRadius: BorderRadius.circular(18),
+                    ),
+                    const SizedBox(width: 7),
+                    const Expanded(
+                      child: Text(
+                        'Patbond',
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        style: TextStyle(
+                          color: AppColors.primary,
+                          fontSize: 13,
+                          fontWeight: FontWeight.w800,
+                        ),
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ),
+            actions: [
+              IconButton.filledTonal(
+                tooltip: '通知',
+                onPressed: () {
+                  ScaffoldMessenger.of(
+                    context,
+                  ).showSnackBar(const SnackBar(content: Text('暂无新通知 🐾')));
+                },
+                icon: const Icon(Icons.notifications_outlined, size: 21),
+              ),
+              const SizedBox(width: 10),
+            ],
+          ),
+          body: SafeArea(
+            top: false,
+            child: IndexedStack(index: currentIndex, children: pages),
+          ),
+          bottomNavigationBar: NavigationBar(
+            selectedIndex: currentIndex,
+            onDestinationSelected: selectTab,
+            destinations: const [
+              NavigationDestination(
+                icon: Icon(Icons.home_outlined),
+                selectedIcon: Icon(Icons.home_rounded),
+                label: '首页',
+              ),
+              NavigationDestination(
+                icon: Icon(Icons.auto_awesome_outlined),
+                selectedIcon: Icon(Icons.auto_awesome),
+                label: '创作',
+              ),
+              NavigationDestination(
+                icon: Icon(Icons.pets_outlined),
+                selectedIcon: Icon(Icons.pets),
+                label: '档案',
+              ),
+              NavigationDestination(
+                icon: Icon(Icons.storefront_outlined),
+                selectedIcon: Icon(Icons.storefront),
+                label: '服务',
+              ),
+              NavigationDestination(
+                icon: Icon(Icons.person_outline),
+                selectedIcon: Icon(Icons.person),
+                label: '我的',
+              ),
+            ],
+          ),
+        );
+      },
+    );
+  }
 }

lib/features/pets/care_reminder_form_page.dart

@@ -0,0 +1,312 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/semantics.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/app_text_field.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/primary_button.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/health_record_display.dart';
+import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_repository.dart';
+
+/// 照护提醒创建表单页（T2-14）。
+///
+/// - 四类提醒类型（驱虫/体检/用药/其他）必选；标题必填；到期日期必选
+///   （今日取此刻、未来日期取当日 12:00，转 UTC——与记录表单同一约定）。
+/// - 契约：创建恒为 pending（不收 status）；title/dueAt 无编辑端点，
+///   改期路径为忽略后重建。
+/// - 埋点：health_record_create_started/succeeded/failed
+///   （recordType=reminder）。
+class CareReminderFormPage extends StatefulWidget {
+  const CareReminderFormPage({
+    required this.repository,
+    required this.petId,
+    super.key,
+    this.analytics,
+    this.entryPoint = HealthRecordEntryPoint.recordList,
+  });
+
+  final PetsRepository repository;
+  final String petId;
+  final HealthRecordAnalytics? analytics;
+  final HealthRecordEntryPoint entryPoint;
+
+  @override
+  State<CareReminderFormPage> createState() => _CareReminderFormPageState();
+}
+
+class _CareReminderFormPageState extends State<CareReminderFormPage> {
+  final _titleCtrl = TextEditingController();
+
+  CareReminderType? _type;
+  DateTime? _dueDate;
+  String? _typeError;
+  String? _titleError;
+  String? _dueError;
+  String? _formError;
+  bool _submitting = false;
+
+  bool _startedFired = false;
+  int _attemptSeq = 0;
+  late final DateTime _openedAt;
+
+  @override
+  void initState() {
+    super.initState();
+    _openedAt = DateTime.now();
+  }
+
+  @override
+  void dispose() {
+    _titleCtrl.dispose();
+    super.dispose();
+  }
+
+  void _markStarted() {
+    if (_startedFired) return;
+    _startedFired = true;
+    widget.analytics?.createStarted(
+      recordType: HealthRecordType.reminder,
+      entryPoint: widget.entryPoint,
+    );
+  }
+
+  void _trackFailed(HealthRecordFailureReason reason, [int? errorCode]) {
+    widget.analytics?.createFailed(
+      recordType: HealthRecordType.reminder,
+      reason: reason,
+      attemptSeq: _attemptSeq,
+      errorCode: errorCode,
+    );
+  }
+
+  void _showFormError(String message) {
+    setState(() => _formError = message);
+    SemanticsService.sendAnnouncement(
+      View.of(context),
+      message,
+      TextDirection.ltr,
+    );
+  }
+
+  /// 到期时刻：今日取此刻，其余日期取当日 12:00（本地），提交前转 UTC。
+  DateTime _dueAt() {
+    final now = DateTime.now();
+    final date = _dueDate!;
+    final sameDay =
+        date.year == now.year && date.month == now.month && date.day == now.day;
+    final local = sameDay ? now : DateTime(date.year, date.month, date.day, 12);
+    return local.toUtc();
+  }
+
+  Future<void> _submit() async {
+    if (_submitting) return;
+    _attemptSeq++;
+    final typeError = _type == null ? '请选择提醒类型' : null;
+    final titleError = _titleCtrl.text.trim().isEmpty ? '请输入提醒内容' : null;
+    final dueError = _dueDate == null ? '请选择到期日期' : null;
+    if (typeError != null || titleError != null || dueError != null) {
+      setState(() {
+        _typeError = typeError;
+        _titleError = titleError;
+        _dueError = dueError;
+      });
+      _trackFailed(HealthRecordFailureReason.validationError);
+      return;
+    }
+
+    setState(() {
+      _submitting = true;
+      _formError = null;
+    });
+    try {
+      final reminder = await widget.repository.createCareReminder(
+        widget.petId,
+        CreateCareReminderRequest(
+          reminderType: _type!,
+          title: _titleCtrl.text.trim(),
+          dueAt: _dueAt(),
+        ),
+      );
+      widget.analytics?.createSucceeded(
+        recordType: HealthRecordType.reminder,
+        durationMs: DateTime.now().difference(_openedAt).inMilliseconds,
+      );
+      if (mounted) Navigator.of(context).pop(reminder);
+    } on PetAccessDeniedException {
+      if (!mounted) return;
+      _showFormError('你没有权限为该宠物添加提醒');
+      _trackFailed(HealthRecordFailureReason.permissionDenied, 40300);
+    } on PetNotFoundException {
+      if (!mounted) return;
+      final navigator = Navigator.of(context);
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('宠物不存在或已被删除')));
+      _trackFailed(HealthRecordFailureReason.notFound, 40401);
+      navigator.pop();
+    } on ApiRateLimitException {
+      if (!mounted) return;
+      _showFormError('操作过于频繁，请稍后再试');
+      _trackFailed(HealthRecordFailureReason.rateLimited);
+    } on ApiBusinessException catch (error) {
+      if (!mounted) return;
+      final isParam = error.code == ApiCodes.paramError;
+      _showFormError(isParam ? '请检查填写内容后重试' : '保存失败，请稍后重试');
+      _trackFailed(
+        isParam
+            ? HealthRecordFailureReason.validationError
+            : HealthRecordFailureReason.serverError,
+        error.code,
+      );
+    } on ApiNetworkException {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: const Text('网络异常，请检查网络后重试'),
+          action: SnackBarAction(label: '重试', onPressed: _submit),
+        ),
+      );
+      _trackFailed(HealthRecordFailureReason.networkError);
+    } on SessionExpiredException {
+      // 会话失效：认证状态机自动回登录页。
+    } finally {
+      if (mounted) setState(() => _submitting = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        foregroundColor: AppColors.ink,
+        title: const Text('添加照护提醒'),
+        centerTitle: true,
+        titleTextStyle: const TextStyle(
+          color: AppColors.ink,
+          fontSize: 16,
+          fontWeight: FontWeight.w800,
+        ),
+      ),
+      body: SafeArea(
+        child: ListView(
+          padding: const EdgeInsets.fromLTRB(20, 8, 20, 30),
+          children: [
+            const Text(
+              '提醒类型',
+              style: TextStyle(
+                color: AppColors.inkSoft,
+                fontSize: 13,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+            const SizedBox(height: 8),
+            Wrap(
+              spacing: 8,
+              runSpacing: 8,
+              children: [
+                for (final type in CareReminderType.values)
+                  ChoiceChip(
+                    label: Text(careReminderTypeLabel(type)),
+                    selected: _type == type,
+                    onSelected: _submitting
+                        ? null
+                        : (_) {
+                            _markStarted();
+                            setState(() {
+                              _type = type;
+                              _typeError = null;
+                              _formError = null;
+                            });
+                          },
+                  ),
+              ],
+            ),
+            if (_typeError != null) ...[
+              const SizedBox(height: 6),
+              Text(
+                _typeError!,
+                style: const TextStyle(color: AppColors.error, fontSize: 12),
+              ),
+            ],
+            const SizedBox(height: 18),
+            AppTextField(
+              label: '提醒内容（如：体内外驱虫）',
+              controller: _titleCtrl,
+              prefixIcon: Icons.notifications_outlined,
+              errorText: _titleError,
+              enabled: !_submitting,
+              textInputAction: TextInputAction.done,
+              onChanged: (_) {
+                _markStarted();
+                if (_titleError != null || _formError != null) {
+                  setState(() {
+                    _titleError = null;
+                    _formError = null;
+                  });
+                }
+              },
+              onSubmitted: (_) => _submit(),
+            ),
+            const SizedBox(height: 14),
+            ListTile(
+              shape: RoundedRectangleBorder(
+                side: const BorderSide(color: AppColors.border),
+                borderRadius: BorderRadius.circular(AppRadius.lg),
+              ),
+              tileColor: AppColors.surface,
+              leading: const Icon(Icons.event_outlined, color: AppColors.muted),
+              title: const Text('到期日期', style: TextStyle(fontSize: 14)),
+              subtitle: Text(
+                _dueDate == null ? '未选择' : dateToJson(_dueDate!),
+                style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
+              ),
+              trailing: const Icon(
+                Icons.calendar_month_outlined,
+                color: AppColors.muted,
+              ),
+              enabled: !_submitting,
+              onTap: () async {
+                final now = DateTime.now();
+                final value = await showDatePicker(
+                  context: context,
+                  initialDate: _dueDate ?? now,
+                  firstDate: now,
+                  lastDate: DateTime(now.year + 5),
+                );
+                if (value != null && mounted) {
+                  _markStarted();
+                  setState(() {
+                    _dueDate = value;
+                    _dueError = null;
+                  });
+                }
+              },
+            ),
+            if (_dueError != null) ...[
+              const SizedBox(height: 6),
+              Text(
+                _dueError!,
+                style: const TextStyle(color: AppColors.error, fontSize: 12),
+              ),
+            ],
+            if (_formError != null) ...[
+              const SizedBox(height: 16),
+              InlineErrorBanner(message: _formError!),
+            ],
+            const SizedBox(height: 24),
+            PrimaryButton(
+              label: '保存提醒',
+              isLoading: _submitting,
+              onPressed: _submit,
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/features/pets/care_reminders_page.dart

@@ -0,0 +1,512 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/analytics/analytics_page_name.dart';
+import 'package:patbond_flutter/core/navigation/fade_route.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/empty_state_illustration.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/record_type_dot.dart';
+import 'package:patbond_flutter/features/pets/care_reminder_form_page.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/health_record_display.dart';
+import 'package:patbond_flutter/features/pets/pet_display.dart';
+import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_repository.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+enum _ListPhase { loading, ready, error }
+
+/// 照护提醒页（T2-14）：契约不分页，`due_at ASC`（待办最先到期在前）；
+/// `?status=` 过滤走服务端白名单视图；逾期待办有显性视觉标识。
+///
+/// - 完成 / 忽略：`PATCH /care-reminders/{id}` 状态流转
+///   （pending→completed 必带 completedAt，pending→dismissed 禁带）；
+///   42202 规则兜底、40902 并发流转抢先提示后重拉。
+/// - 提醒完成/忽略**不埋事件**（06 §7 缺口 3 既定取舍：完成率从
+///   care_reminders 事实表出数；M3+ 推送实验时再增补）。
+/// - 曝光埋点：每次进入首个成功加载上报一次
+///   `health_record_viewed(recordType=reminder, source=pet_detail)`。
+class CareRemindersPage extends StatefulWidget {
+  const CareRemindersPage({
+    required this.repository,
+    required this.petId,
+    required this.canWrite,
+    super.key,
+    this.analytics,
+  });
+
+  final PetsRepository repository;
+  final String petId;
+
+  /// owner/caregiver 可写；viewer 隐藏创建与完成/忽略入口。
+  final bool canWrite;
+
+  final HealthRecordAnalytics? analytics;
+
+  @override
+  State<CareRemindersPage> createState() => _CareRemindersPageState();
+}
+
+class _CareRemindersPageState extends State<CareRemindersPage> {
+  _ListPhase _phase = _ListPhase.loading;
+  List<CareReminder> _reminders = const [];
+  ApiException? _error;
+  CareReminderStatus? _filter;
+  bool _viewedFired = false;
+  bool _mutating = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _load();
+  }
+
+  Future<void> _load() async {
+    setState(() {
+      _phase = _ListPhase.loading;
+      _error = null;
+    });
+    try {
+      final reminders = await widget.repository.listCareReminders(
+        widget.petId,
+        status: _filter,
+      );
+      if (!mounted) return;
+      setState(() {
+        _reminders = reminders;
+        _phase = _ListPhase.ready;
+      });
+      if (!_viewedFired) {
+        _viewedFired = true;
+        widget.analytics?.viewed(
+          recordType: HealthRecordType.reminder,
+          source: HealthRecordViewSource.petDetail,
+        );
+      }
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      setState(() {
+        _error = error;
+        _phase = _ListPhase.error;
+      });
+    }
+  }
+
+  Future<void> _openCreate() async {
+    final created = await Navigator.of(context).push<CareReminder>(
+      fadePageRoute(
+        CareReminderFormPage(
+          repository: widget.repository,
+          petId: widget.petId,
+          analytics: widget.analytics,
+        ),
+        settings: RouteSettings(name: AnalyticsPageName.recordForm.pageName),
+      ),
+    );
+    if (created != null && mounted) {
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('已添加提醒')));
+      // 排序键 due_at ASC 在服务端，重新拉取而非本地猜位置。
+      await _load();
+    }
+  }
+
+  /// 完成时刻：今日取此刻，补记历史日期取当日 12:00（本地），转 UTC。
+  DateTime _completedAt(DateTime date) {
+    final now = DateTime.now();
+    final sameDay =
+        date.year == now.year && date.month == now.month && date.day == now.day;
+    final local = sameDay ? now : DateTime(date.year, date.month, date.day, 12);
+    return local.toUtc();
+  }
+
+  Future<void> _complete(CareReminder reminder) async {
+    final date = await showDialog<DateTime>(
+      context: context,
+      builder: (context) => _CompleteDialog(title: reminder.title),
+    );
+    if (date == null || !mounted) return;
+    await _mutate(
+      reminder,
+      UpdateCareReminderRequest(
+        status: CareReminderStatus.completed,
+        // 契约：pending→completed 必带 completedAt（客户端提交，允许补记）。
+        completedAt: _completedAt(date),
+      ),
+      successText: '已标记完成',
+    );
+  }
+
+  Future<void> _dismiss(CareReminder reminder) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('忽略这条提醒？'),
+        content: Text('「${reminder.title}」将不再出现在待办中，且不可恢复为待办。'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(false),
+            child: const Text('取消'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.of(context).pop(true),
+            child: const Text('忽略'),
+          ),
+        ],
+      ),
+    );
+    if (confirmed != true || !mounted) return;
+    await _mutate(
+      reminder,
+      // 契约：pending→dismissed 禁带 completedAt。
+      const UpdateCareReminderRequest(status: CareReminderStatus.dismissed),
+      successText: '已忽略提醒',
+    );
+  }
+
+  Future<void> _mutate(
+    CareReminder reminder,
+    UpdateCareReminderRequest request, {
+    required String successText,
+  }) async {
+    if (_mutating) return;
+    setState(() => _mutating = true);
+    final messenger = ScaffoldMessenger.of(context);
+    try {
+      await widget.repository.updateCareReminder(reminder.id, request);
+      if (!mounted) return;
+      messenger.showSnackBar(SnackBar(content: Text(successText)));
+      await _load();
+    } on CareReminderRuleException {
+      if (!mounted) return;
+      // 42202：状态机/completedAt 一致性兜底（前端结构上已按状态发字段）。
+      messenger.showSnackBar(
+        const SnackBar(content: Text('提醒状态不满足流转规则，已刷新，请重试')),
+      );
+      await _load();
+    } on PetVersionConflictException {
+      if (!mounted) return;
+      // 40902：并发流转抢先（条件更新守卫落空），处理方式与乐观锁一致。
+      messenger.showSnackBar(const SnackBar(content: Text('提醒已在其他设备被处理，已刷新')));
+      await _load();
+    } on PetRecordNotFoundException {
+      if (!mounted) return;
+      messenger.showSnackBar(const SnackBar(content: Text('提醒不存在或已被删除，已刷新')));
+      await _load();
+    } on PetAccessDeniedException {
+      if (!mounted) return;
+      messenger.showSnackBar(const SnackBar(content: Text('你没有权限操作该提醒')));
+    } on ApiBusinessException {
+      if (!mounted) return;
+      messenger.showSnackBar(const SnackBar(content: Text('操作失败，请稍后重试')));
+    } on ApiNetworkException {
+      if (!mounted) return;
+      messenger.showSnackBar(const SnackBar(content: Text('网络异常，请检查网络后重试')));
+    } on SessionExpiredException {
+      // 会话失效：认证状态机自动回登录页。
+    } finally {
+      if (mounted) setState(() => _mutating = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        foregroundColor: AppColors.ink,
+        title: const Text('照护提醒'),
+        centerTitle: true,
+        titleTextStyle: const TextStyle(
+          color: AppColors.ink,
+          fontSize: 16,
+          fontWeight: FontWeight.w800,
+        ),
+        actions: [
+          if (widget.canWrite && _phase == _ListPhase.ready)
+            IconButton(
+              tooltip: '添加提醒',
+              onPressed: _openCreate,
+              icon: const Icon(Icons.add),
+            ),
+        ],
+      ),
+      body: Column(
+        children: [
+          Padding(
+            padding: const EdgeInsets.fromLTRB(16, 4, 16, 0),
+            child: _filterChips(),
+          ),
+          Expanded(
+            child: switch (_phase) {
+              _ListPhase.loading => const Center(
+                child: CircularProgressIndicator(),
+              ),
+              _ListPhase.error => Center(
+                child: Padding(
+                  padding: const EdgeInsets.all(24),
+                  child: Column(
+                    mainAxisAlignment: MainAxisAlignment.center,
+                    children: [
+                      InlineErrorBanner(message: petLoadErrorMessage(_error)),
+                      const SizedBox(height: 16),
+                      FilledButton(onPressed: _load, child: const Text('重试')),
+                    ],
+                  ),
+                ),
+              ),
+              _ListPhase.ready when _reminders.isEmpty => Center(
+                child: SingleChildScrollView(child: _emptyState()),
+              ),
+              _ListPhase.ready => _list(),
+            },
+          ),
+        ],
+      ),
+    );
+  }
+
+  /// 状态过滤（服务端白名单视图；「待办」即 ?status=pending 按 due_at 查询）。
+  Widget _filterChips() {
+    final options = <(String, CareReminderStatus?)>[
+      ('全部', null),
+      ('待办', CareReminderStatus.pending),
+      ('已完成', CareReminderStatus.completed),
+      ('已忽略', CareReminderStatus.dismissed),
+    ];
+    return SingleChildScrollView(
+      scrollDirection: Axis.horizontal,
+      child: Row(
+        children: [
+          for (final (label, status) in options)
+            Padding(
+              padding: const EdgeInsets.only(right: 8),
+              child: ChoiceChip(
+                label: Text(label),
+                selected: _filter == status,
+                onSelected: (_) {
+                  if (_filter == status) return;
+                  setState(() => _filter = status);
+                  _load();
+                },
+              ),
+            ),
+        ],
+      ),
+    );
+  }
+
+  Widget _emptyState() {
+    // 过滤视图下的空态不给 CTA（05 §4.2 筛选后空态惯例）。
+    if (_filter != null) {
+      return EmptyStateIllustration(
+        icon: Icons.notifications_none_outlined,
+        title: '暂无「${careReminderStatusLabel(_filter!)}」提醒',
+      );
+    }
+    return EmptyStateIllustration(
+      icon: Icons.notifications_none_outlined,
+      title: '还没有照护提醒',
+      description: '驱虫、体检、用药……到点不忘每一件照护小事',
+      ctaLabel: widget.canWrite ? '添加第一条' : null,
+      onCtaPressed: widget.canWrite ? _openCreate : null,
+    );
+  }
+
+  Widget _list() {
+    final now = DateTime.now();
+    return RefreshIndicator(
+      onRefresh: _load,
+      child: ListView(
+        padding: const EdgeInsets.fromLTRB(16, 8, 16, 30),
+        children: [
+          for (final reminder in _reminders) ...[
+            _ReminderTile(
+              reminder: reminder,
+              now: now,
+              // 完成/忽略仅对待办可用（终态不可迁；viewer 无写权限）。
+              onComplete:
+                  widget.canWrite &&
+                      reminder.status == CareReminderStatus.pending &&
+                      !_mutating
+                  ? () => _complete(reminder)
+                  : null,
+              onDismiss:
+                  widget.canWrite &&
+                      reminder.status == CareReminderStatus.pending &&
+                      !_mutating
+                  ? () => _dismiss(reminder)
+                  : null,
+            ),
+            const SizedBox(height: 10),
+          ],
+        ],
+      ),
+    );
+  }
+}
+
+/// 提醒条目：RecordTypeDot + 标题 + 时间副行 + 状态 TagPill（逾期红标），
+/// 待办行附「标记完成 / 忽略」动作（图标 + 文字双通道）。
+class _ReminderTile extends StatelessWidget {
+  const _ReminderTile({
+    required this.reminder,
+    required this.now,
+    this.onComplete,
+    this.onDismiss,
+  });
+
+  final CareReminder reminder;
+  final DateTime now;
+  final VoidCallback? onComplete;
+  final VoidCallback? onDismiss;
+
+  @override
+  Widget build(BuildContext context) {
+    final overdue = isReminderOverdue(reminder, now);
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(14),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Row(
+              children: [
+                RecordTypeDot(
+                  type: recordTypeForReminder(reminder.reminderType),
+                  size: RecordTypeDotSize.md,
+                ),
+                const SizedBox(width: 12),
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        reminder.title,
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        style: Theme.of(context).textTheme.titleMedium,
+                      ),
+                      const SizedBox(height: 4),
+                      Text(
+                        '${careReminderTypeLabel(reminder.reminderType)} · '
+                        '${reminderDateLine(reminder)}',
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        style: TextStyle(
+                          // 逾期副行同步警示色（与标签双位标识）。
+                          color: overdue
+                              ? AppColors.errorDark
+                              : AppColors.inkSoft,
+                          fontSize: 12,
+                          fontWeight: overdue
+                              ? FontWeight.w700
+                              : FontWeight.w400,
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+                const SizedBox(width: 8),
+                TagPill(
+                  reminderStatusTag(reminder, now),
+                  color: reminderStatusColor(reminder, now),
+                ),
+              ],
+            ),
+            if (onComplete != null || onDismiss != null) ...[
+              const SizedBox(height: 6),
+              Row(
+                mainAxisAlignment: MainAxisAlignment.end,
+                children: [
+                  TextButton.icon(
+                    onPressed: onDismiss,
+                    icon: const Icon(Icons.close, size: 16),
+                    style: TextButton.styleFrom(
+                      foregroundColor: AppColors.inkSoft,
+                    ),
+                    label: const Text('忽略'),
+                  ),
+                  const SizedBox(width: 4),
+                  TextButton.icon(
+                    onPressed: onComplete,
+                    icon: const Icon(Icons.check_circle_outline, size: 16),
+                    label: const Text('标记完成'),
+                  ),
+                ],
+              ),
+            ],
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+/// 标记完成对话框：完成日期默认今天，可补记历史时刻（契约 completedAt
+/// 由客户端提交）。确认返回所选日期。
+class _CompleteDialog extends StatefulWidget {
+  const _CompleteDialog({required this.title});
+
+  final String title;
+
+  @override
+  State<_CompleteDialog> createState() => _CompleteDialogState();
+}
+
+class _CompleteDialogState extends State<_CompleteDialog> {
+  DateTime _date = DateTime.now();
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      title: const Text('标记完成'),
+      content: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text(
+            '「${widget.title}」',
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+          const SizedBox(height: 12),
+          ListTile(
+            contentPadding: EdgeInsets.zero,
+            leading: const Icon(Icons.event_outlined, color: AppColors.muted),
+            title: const Text('完成日期', style: TextStyle(fontSize: 14)),
+            subtitle: Text(
+              dateToJson(_date),
+              style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
+            ),
+            onTap: () async {
+              final now = DateTime.now();
+              final value = await showDatePicker(
+                context: context,
+                initialDate: _date,
+                firstDate: DateTime(1990),
+                lastDate: now,
+              );
+              if (value != null && mounted) {
+                setState(() => _date = value);
+              }
+            },
+          ),
+        ],
+      ),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.of(context).pop(),
+          child: const Text('取消'),
+        ),
+        FilledButton(
+          onPressed: () => Navigator.of(context).pop(_date),
+          child: const Text('确认完成'),
+        ),
+      ],
+    );
+  }
+}

lib/features/pets/health_event_edit_page.dart

@@ -0,0 +1,351 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/semantics.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/app_text_field.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/primary_button.dart';
+import 'package:patbond_flutter/core/widgets/record_type_dot.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/health_record_display.dart';
+import 'package:patbond_flutter/features/pets/money.dart';
+import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_repository.dart';
+
+/// 健康事件编辑页（T2-14）：顶层短路径 `PATCH /health-events/{id}`。
+///
+/// - 契约：仅 title / notes / amountCents 可编辑；eventType / occurredAt
+///   为条目身份，静态展示不可改；不支持清空回 null（清空输入视为不变更）。
+/// - 差量提交：只发送改动字段 + version；无变更不发 PATCH 直接返回。
+/// - 40902 版本冲突照 T2-12 模式：明确提示 + 自动取最新版本更新乐观锁
+///   基线（保留用户输入），用户核对后重新保存。契约无按 id 读取端点，
+///   最新版本经时间线分页检索取回。
+/// - 埋点：health_record_edit_succeeded(fieldCount) / edit_failed
+///   （failureReason 含 conflict，recordType=health_event）。
+class HealthEventEditPage extends StatefulWidget {
+  const HealthEventEditPage({
+    required this.repository,
+    required this.event,
+    super.key,
+    this.analytics,
+  });
+
+  final PetsRepository repository;
+
+  /// 编辑基线（含 version 乐观锁与差量比较基准）。
+  final HealthEvent event;
+
+  final HealthRecordAnalytics? analytics;
+
+  @override
+  State<HealthEventEditPage> createState() => _HealthEventEditPageState();
+}
+
+class _HealthEventEditPageState extends State<HealthEventEditPage> {
+  late final TextEditingController _titleCtrl;
+  late final TextEditingController _amountCtrl;
+  late final TextEditingController _notesCtrl;
+
+  /// 编辑基线：40902 冲突刷新后更新（version 与差量计算的比较基准）。
+  late HealthEvent _base;
+
+  String? _titleError;
+  String? _amountError;
+  String? _formError;
+  bool _submitting = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _base = widget.event;
+    _titleCtrl = TextEditingController(text: _base.title);
+    _amountCtrl = TextEditingController(
+      text: _base.amountCents == null
+          ? ''
+          : formatCentsAsYuan(_base.amountCents!),
+    );
+    _notesCtrl = TextEditingController(text: _base.notes ?? '');
+  }
+
+  @override
+  void dispose() {
+    _titleCtrl.dispose();
+    _amountCtrl.dispose();
+    _notesCtrl.dispose();
+    super.dispose();
+  }
+
+  void _trackFailed(HealthRecordFailureReason reason, [int? errorCode]) {
+    widget.analytics?.editFailed(
+      recordType: HealthRecordType.healthEvent,
+      reason: reason,
+      errorCode: errorCode,
+    );
+  }
+
+  void _showFormError(String message) {
+    setState(() => _formError = message);
+    SemanticsService.sendAnnouncement(
+      View.of(context),
+      message,
+      TextDirection.ltr,
+    );
+  }
+
+  /// 差量请求：只含改动字段（契约不支持清空回 null——清空输入视为不变更）。
+  /// 无实际变更返回 null。
+  UpdateHealthEventRequest? _buildDiff() {
+    final title = _titleCtrl.text.trim();
+    final notes = _notesCtrl.text.trim();
+    final amountText = _amountCtrl.text.trim();
+    final amountCents = amountText.isEmpty
+        ? null
+        : parseYuanToCents(amountText);
+    final request = UpdateHealthEventRequest(
+      version: _base.version,
+      title: title != _base.title ? title : null,
+      notes: notes.isNotEmpty && notes != (_base.notes ?? '') ? notes : null,
+      amountCents: amountCents != null && amountCents != _base.amountCents
+          ? amountCents
+          : null,
+    );
+    // 只剩 version 一个键 → 无实际变更。
+    return request.toJson().length == 1 ? null : request;
+  }
+
+  Future<void> _submit() async {
+    if (_submitting) return;
+    final titleError = _titleCtrl.text.trim().isEmpty ? '标题不能为空' : null;
+    final amountText = _amountCtrl.text.trim();
+    final amountError =
+        amountText.isNotEmpty && parseYuanToCents(amountText) == null
+        ? '金额格式不正确，最多两位小数'
+        : null;
+    if (titleError != null || amountError != null) {
+      setState(() {
+        _titleError = titleError;
+        _amountError = amountError;
+      });
+      _trackFailed(HealthRecordFailureReason.validationError);
+      return;
+    }
+    final request = _buildDiff();
+    if (request == null) {
+      Navigator.of(context).pop();
+      return;
+    }
+
+    setState(() {
+      _submitting = true;
+      _formError = null;
+    });
+    try {
+      final updated = await widget.repository.updateHealthEvent(
+        _base.id,
+        request,
+      );
+      widget.analytics?.editSucceeded(
+        recordType: HealthRecordType.healthEvent,
+        fieldCount: request.toJson().length - 1,
+      );
+      if (mounted) Navigator.of(context).pop(updated);
+    } on PetVersionConflictException {
+      _trackFailed(HealthRecordFailureReason.conflict, 40902);
+      await _handleVersionConflict();
+    } on PetRecordNotFoundException {
+      if (!mounted) return;
+      final navigator = Navigator.of(context);
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('记录不存在或已被删除')));
+      _trackFailed(HealthRecordFailureReason.notFound, 40402);
+      navigator.pop();
+    } on PetAccessDeniedException {
+      if (!mounted) return;
+      _showFormError('你没有权限修改该记录');
+      _trackFailed(HealthRecordFailureReason.permissionDenied, 40300);
+    } on ApiRateLimitException {
+      if (!mounted) return;
+      _showFormError('操作过于频繁，请稍后再试');
+      _trackFailed(HealthRecordFailureReason.rateLimited);
+    } on ApiBusinessException catch (error) {
+      if (!mounted) return;
+      final isParam = error.code == ApiCodes.paramError;
+      _showFormError(isParam ? '请检查填写内容后重试' : '保存失败，请稍后重试');
+      _trackFailed(
+        isParam
+            ? HealthRecordFailureReason.validationError
+            : HealthRecordFailureReason.serverError,
+        error.code,
+      );
+    } on ApiNetworkException {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: const Text('网络异常，请检查网络后重试'),
+          action: SnackBarAction(label: '重试', onPressed: _submit),
+        ),
+      );
+      _trackFailed(HealthRecordFailureReason.networkError);
+    } on SessionExpiredException {
+      // 会话失效：认证状态机自动回登录页。
+    } finally {
+      if (mounted) setState(() => _submitting = false);
+    }
+  }
+
+  /// 40902：提示 + 刷新路径——契约无按 id 读取端点，经时间线分页检索
+  /// 取回最新版本更新乐观锁基线（保留用户输入），用户核对后重新保存。
+  Future<void> _handleVersionConflict() async {
+    try {
+      final fresh = await _fetchLatest();
+      if (!mounted) return;
+      if (fresh == null) {
+        final navigator = Navigator.of(context);
+        ScaffoldMessenger.of(
+          context,
+        ).showSnackBar(const SnackBar(content: Text('记录不存在或已被删除')));
+        navigator.pop();
+        return;
+      }
+      setState(() => _base = fresh);
+      _showFormError('记录已在其他设备被修改，已获取最新版本，请核对后重新保存');
+    } on ApiException {
+      if (!mounted) return;
+      _showFormError('记录已在其他设备被修改，请返回后刷新重试');
+    }
+  }
+
+  /// 按 occurred_at DESC 分页检索本记录（上限 10 页防御性截断）。
+  Future<HealthEvent?> _fetchLatest() async {
+    String? cursor;
+    for (var page = 0; page < 10; page++) {
+      final result = await widget.repository.listHealthEvents(
+        _base.petId,
+        limit: 50,
+        cursor: cursor,
+      );
+      for (final item in result.items) {
+        if (item.id == _base.id) return item;
+      }
+      if (!result.hasMore) return null;
+      cursor = result.nextCursor;
+    }
+    return null;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final style = recordTypeStyles[recordTypeForHealthEvent(_base.eventType)]!;
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        foregroundColor: AppColors.ink,
+        title: const Text('编辑健康事件'),
+        centerTitle: true,
+        titleTextStyle: const TextStyle(
+          color: AppColors.ink,
+          fontSize: 16,
+          fontWeight: FontWeight.w800,
+        ),
+      ),
+      body: SafeArea(
+        child: ListView(
+          padding: const EdgeInsets.fromLTRB(20, 8, 20, 30),
+          children: [
+            // 事件身份静态区：类型与发生时间不可编辑（契约不在请求体）。
+            Row(
+              children: [
+                RecordTypeDot(
+                  type: recordTypeForHealthEvent(_base.eventType),
+                  size: RecordTypeDotSize.md,
+                ),
+                const SizedBox(width: 12),
+                Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(
+                      healthEventTypeLabel(_base.eventType),
+                      style: TextStyle(
+                        color: style.inkColor,
+                        fontSize: 14,
+                        fontWeight: FontWeight.w700,
+                      ),
+                    ),
+                    const SizedBox(height: 2),
+                    Text(
+                      formatOccurredAt(_base.occurredAt),
+                      style: const TextStyle(
+                        color: AppColors.inkSoft,
+                        fontSize: 12,
+                      ),
+                    ),
+                  ],
+                ),
+              ],
+            ),
+            const SizedBox(height: 18),
+            AppTextField(
+              label: '标题',
+              controller: _titleCtrl,
+              prefixIcon: Icons.title_outlined,
+              errorText: _titleError,
+              enabled: !_submitting,
+              textInputAction: TextInputAction.next,
+              onChanged: (_) {
+                if (_titleError != null || _formError != null) {
+                  setState(() {
+                    _titleError = null;
+                    _formError = null;
+                  });
+                }
+              },
+            ),
+            const SizedBox(height: 14),
+            AppTextField(
+              label: '金额（元）',
+              controller: _amountCtrl,
+              prefixIcon: Icons.payments_outlined,
+              errorText: _amountError,
+              helperText: '以元填写，最多两位小数；清空视为不变更',
+              enabled: !_submitting,
+              keyboardType: const TextInputType.numberWithOptions(
+                decimal: true,
+              ),
+              textInputAction: TextInputAction.next,
+              onChanged: (_) {
+                if (_amountError != null || _formError != null) {
+                  setState(() {
+                    _amountError = null;
+                    _formError = null;
+                  });
+                }
+              },
+            ),
+            const SizedBox(height: 14),
+            AppTextField(
+              label: '备注',
+              controller: _notesCtrl,
+              prefixIcon: Icons.sticky_note_2_outlined,
+              enabled: !_submitting,
+              textInputAction: TextInputAction.done,
+              onSubmitted: (_) => _submit(),
+            ),
+            if (_formError != null) ...[
+              const SizedBox(height: 16),
+              InlineErrorBanner(message: _formError!),
+            ],
+            const SizedBox(height: 24),
+            PrimaryButton(
+              label: '保存修改',
+              isLoading: _submitting,
+              onPressed: _submit,
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/features/pets/health_event_form_page.dart

@@ -0,0 +1,416 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/semantics.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/app_text_field.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/primary_button.dart';
+import 'package:patbond_flutter/core/widgets/record_type_dot.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/health_record_display.dart';
+import 'package:patbond_flutter/features/pets/money.dart';
+import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_repository.dart';
+
+/// 健康事件录入表单页（T2-14）。
+///
+/// - 六类事件类型选择（05 §4.4 类型选择器形态：RecordTypeDot sm + 标签，
+///   图标 + 文字双通道）；类型必选。
+/// - 发生时间默认「现在」，可回选日期（非今日取当日 12:00，与体重表单
+///   同一约定）；提交前转 UTC，ISO 8601 带 Z 上送。
+/// - 金额可选：**UI 以元录入/展示，传输为整数分**（money.dart 换算，
+///   最多两位小数，非法拦截）；后端提交小数 400/40000 兜底。
+/// - 埋点：health_record_create_started/succeeded/failed
+///   （recordType=health_event）。
+class HealthEventFormPage extends StatefulWidget {
+  const HealthEventFormPage({
+    required this.repository,
+    required this.petId,
+    super.key,
+    this.analytics,
+    this.entryPoint = HealthRecordEntryPoint.recordList,
+  });
+
+  final PetsRepository repository;
+  final String petId;
+  final HealthRecordAnalytics? analytics;
+  final HealthRecordEntryPoint entryPoint;
+
+  @override
+  State<HealthEventFormPage> createState() => _HealthEventFormPageState();
+}
+
+class _HealthEventFormPageState extends State<HealthEventFormPage> {
+  final _titleCtrl = TextEditingController();
+  final _amountCtrl = TextEditingController();
+  final _notesCtrl = TextEditingController();
+
+  HealthEventType? _type;
+  DateTime _occurredDate = DateTime.now();
+  String? _typeError;
+  String? _titleError;
+  String? _amountError;
+  String? _formError;
+  bool _submitting = false;
+
+  bool _startedFired = false;
+  int _attemptSeq = 0;
+  late final DateTime _openedAt;
+
+  @override
+  void initState() {
+    super.initState();
+    _openedAt = DateTime.now();
+  }
+
+  @override
+  void dispose() {
+    _titleCtrl.dispose();
+    _amountCtrl.dispose();
+    _notesCtrl.dispose();
+    super.dispose();
+  }
+
+  void _markStarted() {
+    if (_startedFired) return;
+    _startedFired = true;
+    widget.analytics?.createStarted(
+      recordType: HealthRecordType.healthEvent,
+      entryPoint: widget.entryPoint,
+    );
+  }
+
+  void _trackFailed(HealthRecordFailureReason reason, [int? errorCode]) {
+    widget.analytics?.createFailed(
+      recordType: HealthRecordType.healthEvent,
+      reason: reason,
+      attemptSeq: _attemptSeq,
+      errorCode: errorCode,
+    );
+  }
+
+  void _showFormError(String message) {
+    setState(() => _formError = message);
+    SemanticsService.sendAnnouncement(
+      View.of(context),
+      message,
+      TextDirection.ltr,
+    );
+  }
+
+  /// 发生时刻：今日取此刻，历史日期取当日 12:00（本地），提交前转 UTC
+  /// （与体重表单同一约定，规避无时区后缀的解析歧义）。
+  DateTime _occurredAt() {
+    final now = DateTime.now();
+    final sameDay =
+        _occurredDate.year == now.year &&
+        _occurredDate.month == now.month &&
+        _occurredDate.day == now.day;
+    final local = sameDay
+        ? now
+        : DateTime(
+            _occurredDate.year,
+            _occurredDate.month,
+            _occurredDate.day,
+            12,
+          );
+    return local.toUtc();
+  }
+
+  Future<void> _submit() async {
+    if (_submitting) return;
+    _attemptSeq++;
+    final typeError = _type == null ? '请选择事件类型' : null;
+    final titleError = _titleCtrl.text.trim().isEmpty ? '请输入标题' : null;
+    final amountText = _amountCtrl.text.trim();
+    final amountError =
+        amountText.isNotEmpty && parseYuanToCents(amountText) == null
+        ? '金额格式不正确，最多两位小数'
+        : null;
+    if (typeError != null || titleError != null || amountError != null) {
+      setState(() {
+        _typeError = typeError;
+        _titleError = titleError;
+        _amountError = amountError;
+      });
+      _trackFailed(HealthRecordFailureReason.validationError);
+      return;
+    }
+
+    setState(() {
+      _submitting = true;
+      _formError = null;
+    });
+    try {
+      final notes = _notesCtrl.text.trim();
+      final record = await widget.repository.createHealthEvent(
+        widget.petId,
+        CreateHealthEventRequest(
+          eventType: _type!,
+          occurredAt: _occurredAt(),
+          title: _titleCtrl.text.trim(),
+          notes: notes.isEmpty ? null : notes,
+          // 元 → 整数分换算，DTO 层保持整数分（开发计划 §4.3）。
+          amountCents: amountText.isEmpty ? null : parseYuanToCents(amountText),
+        ),
+      );
+      widget.analytics?.createSucceeded(
+        recordType: HealthRecordType.healthEvent,
+        durationMs: DateTime.now().difference(_openedAt).inMilliseconds,
+      );
+      if (mounted) Navigator.of(context).pop(record);
+    } on PetAccessDeniedException {
+      if (!mounted) return;
+      _showFormError('你没有权限为该宠物添加记录');
+      _trackFailed(HealthRecordFailureReason.permissionDenied, 40300);
+    } on PetNotFoundException {
+      if (!mounted) return;
+      final navigator = Navigator.of(context);
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('宠物不存在或已被删除')));
+      _trackFailed(HealthRecordFailureReason.notFound, 40401);
+      navigator.pop();
+    } on ApiRateLimitException {
+      if (!mounted) return;
+      _showFormError('操作过于频繁，请稍后再试');
+      _trackFailed(HealthRecordFailureReason.rateLimited);
+    } on ApiBusinessException catch (error) {
+      if (!mounted) return;
+      final isParam = error.code == ApiCodes.paramError;
+      _showFormError(isParam ? '请检查填写内容后重试' : '保存失败，请稍后重试');
+      _trackFailed(
+        isParam
+            ? HealthRecordFailureReason.validationError
+            : HealthRecordFailureReason.serverError,
+        error.code,
+      );
+    } on ApiNetworkException {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: const Text('网络异常，请检查网络后重试'),
+          action: SnackBarAction(label: '重试', onPressed: _submit),
+        ),
+      );
+      _trackFailed(HealthRecordFailureReason.networkError);
+    } on SessionExpiredException {
+      // 会话失效：认证状态机自动回登录页。
+    } finally {
+      if (mounted) setState(() => _submitting = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        foregroundColor: AppColors.ink,
+        title: const Text('记录健康事件'),
+        centerTitle: true,
+        titleTextStyle: const TextStyle(
+          color: AppColors.ink,
+          fontSize: 16,
+          fontWeight: FontWeight.w800,
+        ),
+      ),
+      body: SafeArea(
+        child: ListView(
+          padding: const EdgeInsets.fromLTRB(20, 8, 20, 30),
+          children: [
+            const Text(
+              '事件类型',
+              style: TextStyle(
+                color: AppColors.inkSoft,
+                fontSize: 13,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+            const SizedBox(height: 8),
+            _typeSelector(),
+            if (_typeError != null) ...[
+              const SizedBox(height: 6),
+              Text(
+                _typeError!,
+                style: const TextStyle(color: AppColors.error, fontSize: 12),
+              ),
+            ],
+            const SizedBox(height: 18),
+            AppTextField(
+              label: '标题（如：皮肤检查）',
+              controller: _titleCtrl,
+              prefixIcon: Icons.title_outlined,
+              errorText: _titleError,
+              enabled: !_submitting,
+              textInputAction: TextInputAction.next,
+              onChanged: (_) {
+                _markStarted();
+                if (_titleError != null || _formError != null) {
+                  setState(() {
+                    _titleError = null;
+                    _formError = null;
+                  });
+                }
+              },
+            ),
+            const SizedBox(height: 14),
+            ListTile(
+              shape: RoundedRectangleBorder(
+                side: const BorderSide(color: AppColors.border),
+                borderRadius: BorderRadius.circular(AppRadius.lg),
+              ),
+              tileColor: AppColors.surface,
+              leading: const Icon(Icons.event_outlined, color: AppColors.muted),
+              title: const Text('发生日期', style: TextStyle(fontSize: 14)),
+              subtitle: Text(
+                dateToJson(_occurredDate),
+                style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
+              ),
+              trailing: const Icon(
+                Icons.calendar_month_outlined,
+                color: AppColors.muted,
+              ),
+              enabled: !_submitting,
+              onTap: () async {
+                final now = DateTime.now();
+                final value = await showDatePicker(
+                  context: context,
+                  initialDate: _occurredDate,
+                  firstDate: DateTime(1990),
+                  lastDate: now,
+                );
+                if (value != null && mounted) {
+                  _markStarted();
+                  setState(() => _occurredDate = value);
+                }
+              },
+            ),
+            const SizedBox(height: 14),
+            AppTextField(
+              label: '金额（元，可选）',
+              controller: _amountCtrl,
+              prefixIcon: Icons.payments_outlined,
+              errorText: _amountError,
+              helperText: '以元填写，最多两位小数，如 128.50',
+              enabled: !_submitting,
+              keyboardType: const TextInputType.numberWithOptions(
+                decimal: true,
+              ),
+              textInputAction: TextInputAction.next,
+              onChanged: (_) {
+                _markStarted();
+                if (_amountError != null || _formError != null) {
+                  setState(() {
+                    _amountError = null;
+                    _formError = null;
+                  });
+                }
+              },
+            ),
+            const SizedBox(height: 14),
+            AppTextField(
+              label: '备注（可选）',
+              controller: _notesCtrl,
+              prefixIcon: Icons.sticky_note_2_outlined,
+              enabled: !_submitting,
+              textInputAction: TextInputAction.done,
+              onChanged: (_) => _markStarted(),
+              onSubmitted: (_) => _submit(),
+            ),
+            if (_formError != null) ...[
+              const SizedBox(height: 16),
+              InlineErrorBanner(message: _formError!),
+            ],
+            const SizedBox(height: 24),
+            PrimaryButton(
+              label: '保存记录',
+              isLoading: _submitting,
+              onPressed: _submit,
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  /// 六类类型选择器（05 §4.4：RecordTypeDot sm 上、标签下；
+  /// 选中 surfaceTint 底 + primaryDark 标签，未选中 inkSoft）。
+  Widget _typeSelector() {
+    return Wrap(
+      spacing: 8,
+      runSpacing: 8,
+      children: [
+        for (final type in HealthEventType.values)
+          _TypeUnit(
+            type: type,
+            selected: _type == type,
+            enabled: !_submitting,
+            onTap: () {
+              _markStarted();
+              setState(() {
+                _type = type;
+                _typeError = null;
+                _formError = null;
+              });
+            },
+          ),
+      ],
+    );
+  }
+}
+
+class _TypeUnit extends StatelessWidget {
+  const _TypeUnit({
+    required this.type,
+    required this.selected,
+    required this.enabled,
+    required this.onTap,
+  });
+
+  final HealthEventType type;
+  final bool selected;
+  final bool enabled;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    return Material(
+      color: selected ? AppColors.surfaceTint : AppColors.surface,
+      shape: RoundedRectangleBorder(
+        side: BorderSide(
+          color: selected ? AppColors.primaryStrong : AppColors.border,
+        ),
+        borderRadius: BorderRadius.circular(AppRadius.md),
+      ),
+      child: InkWell(
+        onTap: enabled ? onTap : null,
+        borderRadius: BorderRadius.circular(AppRadius.md),
+        child: Container(
+          constraints: const BoxConstraints(minWidth: 64, minHeight: 52),
+          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              RecordTypeDot(
+                type: recordTypeForHealthEvent(type),
+                size: RecordTypeDotSize.sm,
+              ),
+              const SizedBox(height: 4),
+              Text(
+                healthEventTypeLabel(type),
+                style: TextStyle(
+                  fontSize: 11,
+                  fontWeight: selected ? FontWeight.w700 : FontWeight.w600,
+                  color: selected ? AppColors.primaryDark : AppColors.inkSoft,
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/features/pets/health_events_page.dart

@@ -0,0 +1,368 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/analytics/analytics_page_name.dart';
+import 'package:patbond_flutter/core/navigation/fade_route.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/empty_state_illustration.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/record_type_dot.dart';
+import 'package:patbond_flutter/features/pets/health_event_edit_page.dart';
+import 'package:patbond_flutter/features/pets/health_event_form_page.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/health_record_display.dart';
+import 'package:patbond_flutter/features/pets/money.dart';
+import 'package:patbond_flutter/features/pets/pet_display.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_repository.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+enum _ListPhase { loading, ready, error }
+
+/// 健康事件时间线页（T2-14）：cursor 分页（occurred_at DESC，
+/// 「加载更多」追加，末页收起），按月分组（05 §4.2 组头），四态齐备。
+///
+/// - 六类事件经 [recordTypeForHealthEvent] 映射 RecordTypeDot，
+///   类型标签 TagPill 双通道呈现；金额以元展示（传输为整数分）。
+/// - 录入经 [HealthEventFormPage]；成功后重拉首页（排序与月分组以
+///   服务端为准，不本地猜位置）。
+/// - 编辑经 [HealthEventEditPage]（canWrite 点条目进入）；成功就地替换。
+/// - 曝光埋点：每次进入首个成功加载上报一次
+///   `health_record_viewed(recordType=health_event, source=pet_detail)`。
+class HealthEventsPage extends StatefulWidget {
+  const HealthEventsPage({
+    required this.repository,
+    required this.petId,
+    required this.canWrite,
+    super.key,
+    this.analytics,
+    this.pageSize,
+  });
+
+  final PetsRepository repository;
+  final String petId;
+
+  /// owner/caregiver 可写；viewer 隐藏录入/编辑入口（40300 语义前置）。
+  final bool canWrite;
+
+  final HealthRecordAnalytics? analytics;
+
+  /// 每页条数（测试注入小页验证分页；缺省走服务端默认 20）。
+  final int? pageSize;
+
+  @override
+  State<HealthEventsPage> createState() => _HealthEventsPageState();
+}
+
+class _HealthEventsPageState extends State<HealthEventsPage> {
+  _ListPhase _phase = _ListPhase.loading;
+  List<HealthEvent> _events = const [];
+  String? _nextCursor;
+  bool _hasMore = false;
+  bool _loadingMore = false;
+  ApiException? _error;
+  bool _viewedFired = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _loadFirstPage();
+  }
+
+  Future<void> _loadFirstPage() async {
+    setState(() {
+      _phase = _ListPhase.loading;
+      _error = null;
+    });
+    try {
+      final page = await widget.repository.listHealthEvents(
+        widget.petId,
+        limit: widget.pageSize,
+      );
+      if (!mounted) return;
+      setState(() {
+        _events = page.items;
+        _nextCursor = page.nextCursor;
+        _hasMore = page.hasMore;
+        _phase = _ListPhase.ready;
+      });
+      if (!_viewedFired) {
+        _viewedFired = true;
+        widget.analytics?.viewed(
+          recordType: HealthRecordType.healthEvent,
+          source: HealthRecordViewSource.petDetail,
+        );
+      }
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      setState(() {
+        _error = error;
+        _phase = _ListPhase.error;
+      });
+    }
+  }
+
+  Future<void> _loadMore() async {
+    if (_loadingMore || !_hasMore) return;
+    setState(() => _loadingMore = true);
+    try {
+      final page = await widget.repository.listHealthEvents(
+        widget.petId,
+        limit: widget.pageSize,
+        cursor: _nextCursor,
+      );
+      if (!mounted) return;
+      setState(() {
+        _events = [..._events, ...page.items];
+        _nextCursor = page.nextCursor;
+        _hasMore = page.hasMore;
+      });
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(petLoadErrorMessage(error))));
+    } finally {
+      if (mounted) setState(() => _loadingMore = false);
+    }
+  }
+
+  Future<void> _openCreate() async {
+    final created = await Navigator.of(context).push<HealthEvent>(
+      fadePageRoute(
+        HealthEventFormPage(
+          repository: widget.repository,
+          petId: widget.petId,
+          analytics: widget.analytics,
+        ),
+        // record_form：健康记录漏斗到达段页名（06 §1.6 / §2.2）。
+        settings: RouteSettings(name: AnalyticsPageName.recordForm.pageName),
+      ),
+    );
+    if (created != null && mounted) {
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('已记录健康事件')));
+      // occurred_at DESC + 月分组：补录历史日期的位置由服务端定，
+      // 重拉首页而非本地猜位置。
+      await _loadFirstPage();
+    }
+  }
+
+  Future<void> _openEdit(HealthEvent event) async {
+    final updated = await Navigator.of(context).push<HealthEvent>(
+      // 编辑页不带路由名：record_form 专属创建漏斗到达段（T2-12 先例）。
+      fadePageRoute(
+        HealthEventEditPage(
+          repository: widget.repository,
+          event: event,
+          analytics: widget.analytics,
+        ),
+      ),
+    );
+    if (updated != null && mounted) {
+      setState(() {
+        // occurredAt 不可编辑 → 排序/分组位置不变，就地替换安全。
+        _events = [
+          for (final item in _events)
+            if (item.id == updated.id) updated else item,
+        ];
+      });
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('已保存修改')));
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        foregroundColor: AppColors.ink,
+        title: const Text('健康时间线'),
+        centerTitle: true,
+        titleTextStyle: const TextStyle(
+          color: AppColors.ink,
+          fontSize: 16,
+          fontWeight: FontWeight.w800,
+        ),
+        actions: [
+          if (widget.canWrite && _phase == _ListPhase.ready)
+            IconButton(
+              tooltip: '记录健康事件',
+              onPressed: _openCreate,
+              icon: const Icon(Icons.add),
+            ),
+        ],
+      ),
+      body: switch (_phase) {
+        _ListPhase.loading => const Center(child: CircularProgressIndicator()),
+        _ListPhase.error => Center(
+          child: Padding(
+            padding: const EdgeInsets.all(24),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                InlineErrorBanner(message: petLoadErrorMessage(_error)),
+                const SizedBox(height: 16),
+                FilledButton(
+                  onPressed: _loadFirstPage,
+                  child: const Text('重试'),
+                ),
+              ],
+            ),
+          ),
+        ),
+        _ListPhase.ready when _events.isEmpty => Center(
+          child: SingleChildScrollView(
+            child: EmptyStateIllustration(
+              icon: Icons.event_note_outlined,
+              title: '还没有健康记录',
+              description: '就医、驱虫、洗护……随手记下毛孩子的健康点滴',
+              ctaLabel: widget.canWrite ? '记录第一条' : null,
+              onCtaPressed: widget.canWrite ? _openCreate : null,
+            ),
+          ),
+        ),
+        _ListPhase.ready => _list(),
+      },
+    );
+  }
+
+  /// 按月分组渲染：服务端 occurred_at DESC 保证同月相邻，
+  /// 月份变化处插组头（05 §4.2「2026 年 9 月」）。
+  Widget _list() {
+    final children = <Widget>[];
+    String? currentMonth;
+    for (final event in _events) {
+      final month = healthEventMonthHeader(event.occurredAt);
+      if (month != currentMonth) {
+        currentMonth = month;
+        children.add(
+          Padding(
+            padding: EdgeInsets.only(top: children.isEmpty ? 0 : 14, bottom: 8),
+            child: Text(
+              month,
+              style: const TextStyle(
+                color: AppColors.inkSoft,
+                fontSize: 12,
+                fontWeight: FontWeight.w700,
+              ),
+            ),
+          ),
+        );
+      }
+      children
+        ..add(
+          _HealthEventTile(
+            event: event,
+            onTap: widget.canWrite ? () => _openEdit(event) : null,
+          ),
+        )
+        ..add(const SizedBox(height: 10));
+    }
+    if (_hasMore) {
+      children.add(
+        Center(
+          child: _loadingMore
+              ? const Padding(
+                  padding: EdgeInsets.all(12),
+                  child: SizedBox(
+                    width: 22,
+                    height: 22,
+                    child: CircularProgressIndicator(strokeWidth: 2),
+                  ),
+                )
+              : TextButton(onPressed: _loadMore, child: const Text('加载更多')),
+        ),
+      );
+    }
+    return RefreshIndicator(
+      onRefresh: _loadFirstPage,
+      child: ListView(
+        padding: const EdgeInsets.fromLTRB(16, 8, 16, 30),
+        children: children,
+      ),
+    );
+  }
+}
+
+/// 时间线条目（05 §3.3 形态）：RecordTypeDot(六类映射) + 标题 +
+/// 日期/备注副行；尾部类型 TagPill（双通道）与金额（元展示，
+/// 15/w800 类型文字色）。
+class _HealthEventTile extends StatelessWidget {
+  const _HealthEventTile({required this.event, this.onTap});
+
+  final HealthEvent event;
+  final VoidCallback? onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final recordType = recordTypeForHealthEvent(event.eventType);
+    final style = recordTypeStyles[recordType]!;
+    final meta = StringBuffer(formatOccurredAt(event.occurredAt));
+    if (event.notes != null && event.notes!.isNotEmpty) {
+      meta.write(' · ${event.notes}');
+    }
+    return Card(
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(AppRadius.xl),
+        child: Padding(
+          padding: const EdgeInsets.all(14),
+          child: Row(
+            children: [
+              RecordTypeDot(type: recordType, size: RecordTypeDotSize.md),
+              const SizedBox(width: 12),
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(
+                      event.title,
+                      maxLines: 1,
+                      overflow: TextOverflow.ellipsis,
+                      style: Theme.of(context).textTheme.titleMedium,
+                    ),
+                    const SizedBox(height: 4),
+                    Text(
+                      meta.toString(),
+                      maxLines: 1,
+                      overflow: TextOverflow.ellipsis,
+                      style: const TextStyle(
+                        color: AppColors.inkSoft,
+                        fontSize: 12,
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+              const SizedBox(width: 8),
+              Column(
+                crossAxisAlignment: CrossAxisAlignment.end,
+                children: [
+                  TagPill(
+                    healthEventTypeLabel(event.eventType),
+                    color: style.baseColor,
+                  ),
+                  if (event.amountCents != null) ...[
+                    const SizedBox(height: 4),
+                    Text(
+                      '¥${formatCentsAsYuan(event.amountCents!)}',
+                      style: TextStyle(
+                        color: style.inkColor,
+                        fontSize: 15,
+                        fontWeight: FontWeight.w800,
+                      ),
+                    ),
+                  ],
+                ],
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/features/pets/health_record_analytics.dart

@@ -0,0 +1,158 @@
+import 'package:patbond_flutter/analytics/page_view_tracker.dart';
+
+/// health_record 域埋点强类型封装（06 号规划 §1.4 字典 v2；后端白名单
+/// 已扩充就绪，24 号报告 §2.2）。沿用 13 号规范 §3.1 惯例：枚举编译期
+/// 锁死，业务代码禁止手拼事件名与属性。
+///
+/// T2-13 挂接创建漏斗三事件 + viewed；T2-14 补挂 edit_succeeded/failed
+/// （健康事件编辑、疫苗标记完成/取消）。`health_record_deleted` 因 M2
+/// 契约无删除端点暂无挂接点，留待删除交互落地。
+
+/// 记录类型（06 §1.4 recordType 枚举，四类记录接口对应）。
+enum HealthRecordType {
+  weight('weight'),
+  vaccine('vaccine'),
+  healthEvent('health_event'),
+  reminder('reminder');
+
+  const HealthRecordType(this.value);
+
+  final String value;
+}
+
+/// 记录创建入口（06 §1.4 entryPoint 枚举）。
+enum HealthRecordEntryPoint {
+  petDetail('pet_detail'),
+  recordList('record_list'),
+  reminder('reminder');
+
+  const HealthRecordEntryPoint(this.value);
+
+  final String value;
+}
+
+/// 创建/编辑失败原因（06 §1.4 基底 + M2 验收新增三值；`conflict`
+/// 仅编辑链路会出现——40902 乐观锁/条件更新守卫落空）。与 pet 域同款
+/// 网络归并口径：断网/超时/5xx 均并入 network_error，server_error
+/// 保留给无法归类的兜底。
+enum HealthRecordFailureReason {
+  validationError('validation_error'),
+  permissionDenied('permission_denied'),
+  notFound('not_found'),
+  rateLimited('rate_limited'),
+  networkError('network_error'),
+  serverError('server_error'),
+  conflict('conflict');
+
+  const HealthRecordFailureReason(this.value);
+
+  final String value;
+}
+
+/// viewed 的来源（06 §1.4 source 枚举）。
+enum HealthRecordViewSource {
+  recordList('record_list'),
+  petDetail('pet_detail'),
+  reminder('reminder');
+
+  const HealthRecordViewSource(this.value);
+
+  final String value;
+}
+
+class HealthRecordAnalytics {
+  HealthRecordAnalytics(this._track);
+
+  /// 生产传 `AnalyticsService.trackEvent`，测试传录制桩。
+  final TrackEventFn _track;
+
+  /// 进入某类记录的创建表单并产生首次输入（每次进入记一次，表单层去重）。
+  void createStarted({
+    required HealthRecordType recordType,
+    required HealthRecordEntryPoint entryPoint,
+  }) {
+    _track('health_record_create_started', {
+      'recordType': recordType.value,
+      'entryPoint': entryPoint.value,
+    });
+  }
+
+  /// 创建接口成功响应（漏斗事件，北极星与 H1/H3/H4 的核心数据源）。
+  ///
+  /// [photoCount] 无照片为 0（M2 不做媒体上传，恒 0，字段随字典保留）。
+  void createSucceeded({
+    required HealthRecordType recordType,
+    required int durationMs,
+    int photoCount = 0,
+  }) {
+    _track('health_record_create_succeeded', {
+      'recordType': recordType.value,
+      'durationMs': durationMs,
+      'photoCount': photoCount,
+    });
+  }
+
+  /// 创建失败：失败响应 / 超时 / 本地校验拦截。
+  ///
+  /// [errorCode] 为业务错误码（本地校验/网络错误时缺席）；
+  /// [httpStatus] 由五位业务码推导（`code ~/ 100`）；
+  /// [attemptSeq] 为本次表单会话内第几次提交尝试（从 1 起）。
+  void createFailed({
+    required HealthRecordType recordType,
+    required HealthRecordFailureReason reason,
+    required int attemptSeq,
+    int? errorCode,
+  }) {
+    _track('health_record_create_failed', {
+      'recordType': recordType.value,
+      'failureReason': reason.value,
+      'attemptSeq': attemptSeq,
+      'errorCode': ?errorCode,
+      if (errorCode != null && errorCode >= 10000)
+        'httpStatus': errorCode ~/ 100,
+    });
+  }
+
+  /// 记录曝光。06 §1.4 定义在详情页可见；M2 体重/疫苗无独立详情页，
+  /// 以「列表页每次进入首个成功加载」为曝光时点（每次进入一次、
+  /// 不随滚动逐条上报，防事件洪水的意图不变）。
+  void viewed({
+    required HealthRecordType recordType,
+    required HealthRecordViewSource source,
+  }) {
+    _track('health_record_viewed', {
+      'recordType': recordType.value,
+      'source': source.value,
+    });
+  }
+
+  /// 编辑保存成功响应（06 §1.4：编辑不设 started）。
+  ///
+  /// [fieldCount] 为本次变更字段数（差量 PATCH 的键数，不含 version）。
+  void editSucceeded({
+    required HealthRecordType recordType,
+    required int fieldCount,
+  }) {
+    _track('health_record_edit_succeeded', {
+      'recordType': recordType.value,
+      'fieldCount': fieldCount,
+    });
+  }
+
+  /// 编辑保存失败（失败原因含 `conflict`——40902 版本/状态守卫冲突，
+  /// M2 验收「并发冲突明确」场景的数据面）。属性集无 attemptSeq
+  /// （白名单对齐 06 §1.5）。
+  void editFailed({
+    required HealthRecordType recordType,
+    required HealthRecordFailureReason reason,
+    int? errorCode,
+  }) {
+    _track('health_record_edit_failed', {
+      'recordType': recordType.value,
+      'failureReason': reason.value,
+      'errorCode': ?errorCode,
+      if (errorCode != null && errorCode >= 10000)
+        'httpStatus': errorCode ~/ 100,
+    });
+  }
+}

lib/features/pets/health_record_display.dart

@@ -0,0 +1,190 @@
+/// 体重 / 疫苗 / 健康事件 / 提醒展示与输入解析的纯函数集合
+/// （列表 / 表单共用，可单测）。
+library;
+
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/record_type_dot.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+
+/// 体重输入解析：契约区间 (0, 500]、最多两位小数（numeric(6,2)）。
+/// 非法（非数字、越界、三位小数）返回 null，由表单层给 errorText。
+double? parseWeightKgInput(String raw) {
+  final text = raw.trim();
+  if (!RegExp(r'^\d{1,3}(\.\d{1,2})?$').hasMatch(text)) return null;
+  final value = double.parse(text);
+  if (value <= 0 || value > 500) return null;
+  return value;
+}
+
+/// 体重展示：去掉无意义尾零（4.35 → 4.35、5.00 → 5、4.50 → 4.5）。
+String formatWeightKg(double weightKg) {
+  var text = weightKg.toStringAsFixed(2);
+  if (text.contains('.')) {
+    text = text.replaceFirst(RegExp(r'0+$'), '');
+    text = text.replaceFirst(RegExp(r'\.$'), '');
+  }
+  return text;
+}
+
+String vaccinationStatusLabel(VaccinationStatus status) => switch (status) {
+  VaccinationStatus.scheduled => '计划中',
+  VaccinationStatus.completed => '已完成',
+  VaccinationStatus.cancelled => '已取消',
+};
+
+/// 状态标签基色（TagPill 淡染底；文字深变体由 TagPill 内置映射）。
+Color vaccinationStatusColor(VaccinationStatus status) => switch (status) {
+  VaccinationStatus.scheduled => AppColors.accent,
+  VaccinationStatus.completed => AppColors.success,
+  VaccinationStatus.cancelled => AppColors.muted,
+};
+
+/// 剂次展示：doseLabel 优先，缺席回落「第 N 针」。
+String vaccinationDoseLabel(Vaccination vaccination) =>
+    vaccination.doseLabel ?? '第 ${vaccination.doseNo} 针';
+
+/// 疫苗条目副行：按状态给日期语义（计划 / 接种 + 下次到期 / 取消）。
+String vaccinationDateLine(
+  Vaccination vaccination,
+) => switch (vaccination.status) {
+  VaccinationStatus.scheduled =>
+    '计划 ${vaccination.plannedOn == null ? '未定' : dateToJson(vaccination.plannedOn!)}',
+  VaccinationStatus.completed =>
+    '接种 ${vaccination.administeredOn == null ? '—' : dateToJson(vaccination.administeredOn!)}'
+        '${vaccination.nextDueOn == null ? '' : ' · 下次 ${dateToJson(vaccination.nextDueOn!)}'}',
+  VaccinationStatus.cancelled => '已取消',
+};
+
+/// 摘要疫苗进度展示：契约 null 语义——无登记为 null（不是 0/0），
+/// 调用方对 null 自行给空态文案。
+String vaccinationProgressLabel(SummaryVaccinationProgress progress) =>
+    '${progress.completedDoses}/${progress.totalDoses}';
+
+/// 疫苗状态-日期规则前端校验（契约 42201 规则的前置拦截；纯函数可单测）：
+/// scheduled 必有 plannedOn；completed 必有 administeredOn；
+/// nextDueOn 与 administeredOn 同时存在时须 nextDueOn ≥ administeredOn。
+/// 通过返回 null，违反返回给用户的拦截文案。
+String? vaccinationDateRuleError({
+  required VaccinationStatus status,
+  DateTime? plannedOn,
+  DateTime? administeredOn,
+  DateTime? nextDueOn,
+}) {
+  if (status == VaccinationStatus.scheduled && plannedOn == null) {
+    return '请选择计划接种日期';
+  }
+  if (status == VaccinationStatus.completed && administeredOn == null) {
+    return '请选择接种日期';
+  }
+  if (administeredOn != null &&
+      nextDueOn != null &&
+      nextDueOn.isBefore(
+        DateTime(administeredOn.year, administeredOn.month, administeredOn.day),
+      )) {
+    return '下次接种日期不能早于接种日期';
+  }
+  return null;
+}
+
+// ---- 健康事件（T2-14）----
+
+/// 契约六类健康事件 → 视觉记录类型（RecordTypeDot 映射唯一出口）。
+/// note（随手记）归入「其他」视觉族；其余五类各有专属图标。
+RecordType recordTypeForHealthEvent(HealthEventType type) => switch (type) {
+  HealthEventType.medical => RecordType.medical,
+  HealthEventType.feeding => RecordType.feeding,
+  HealthEventType.deworming => RecordType.deworming,
+  HealthEventType.grooming => RecordType.grooming,
+  HealthEventType.measurement => RecordType.measurement,
+  HealthEventType.note => RecordType.other,
+};
+
+/// 六类事件中文文案（类型选择器 / 条目标签共用；
+/// 图标 + 文字双通道，不单靠颜色区分）。
+String healthEventTypeLabel(HealthEventType type) => switch (type) {
+  HealthEventType.medical => '就医',
+  HealthEventType.feeding => '喂养',
+  HealthEventType.deworming => '驱虫',
+  HealthEventType.grooming => '洗护',
+  HealthEventType.measurement => '测量',
+  HealthEventType.note => '随手记',
+};
+
+/// 事件发生时刻展示：本地时区 `YYYY-MM-DD HH:mm`。
+String formatOccurredAt(DateTime occurredAt) {
+  final local = occurredAt.toLocal();
+  final h = local.hour.toString().padLeft(2, '0');
+  final min = local.minute.toString().padLeft(2, '0');
+  return '${dateToJson(local)} $h:$min';
+}
+
+/// 时间线月分组组头（05 §4.2：「2026 年 9 月」），按本地时区归月。
+String healthEventMonthHeader(DateTime occurredAt) {
+  final local = occurredAt.toLocal();
+  return '${local.year} 年 ${local.month} 月';
+}
+
+/// 设备时区 → summary `tz` 参数（契约接受固定偏移形如 `+08:00`；
+/// Flutter 无 IANA 名可取，固定偏移语义等价——只作用于月度窗口）。
+String tzOffsetQueryValue(Duration offset) {
+  final sign = offset.isNegative ? '-' : '+';
+  final abs = offset.abs();
+  final h = abs.inHours.toString().padLeft(2, '0');
+  final m = (abs.inMinutes % 60).toString().padLeft(2, '0');
+  return '$sign$h:$m';
+}
+
+// ---- 照护提醒（T2-14）----
+
+/// 四类提醒中文文案。
+String careReminderTypeLabel(CareReminderType type) => switch (type) {
+  CareReminderType.deworming => '驱虫',
+  CareReminderType.checkup => '体检',
+  CareReminderType.medication => '用药',
+  CareReminderType.other => '其他',
+};
+
+/// 提醒类型 → 视觉记录类型（RecordTypeDot 复用）：驱虫沿用驱虫族，
+/// 体检/用药归就医族，其他归兜底族；类型文字由标签承载（双通道）。
+RecordType recordTypeForReminder(CareReminderType type) => switch (type) {
+  CareReminderType.deworming => RecordType.deworming,
+  CareReminderType.checkup => RecordType.medical,
+  CareReminderType.medication => RecordType.medical,
+  CareReminderType.other => RecordType.other,
+};
+
+String careReminderStatusLabel(CareReminderStatus status) => switch (status) {
+  CareReminderStatus.pending => '待办',
+  CareReminderStatus.completed => '已完成',
+  CareReminderStatus.dismissed => '已忽略',
+};
+
+/// 逾期判定：待办且 dueAt 已过（工单硬项：逾期视觉标识）。
+bool isReminderOverdue(CareReminder reminder, DateTime now) =>
+    reminder.status == CareReminderStatus.pending &&
+    reminder.dueAt.isBefore(now);
+
+/// 提醒状态标签文案（逾期的待办以「已逾期」显性标识）。
+String reminderStatusTag(CareReminder reminder, DateTime now) =>
+    isReminderOverdue(reminder, now)
+    ? '已逾期'
+    : careReminderStatusLabel(reminder.status);
+
+/// 提醒状态标签基色（TagPill 淡染底；文字深变体由 TagPill 内置映射）。
+Color reminderStatusColor(CareReminder reminder, DateTime now) =>
+    switch (reminder.status) {
+      CareReminderStatus.pending =>
+        isReminderOverdue(reminder, now) ? AppColors.error : AppColors.accent,
+      CareReminderStatus.completed => AppColors.success,
+      CareReminderStatus.dismissed => AppColors.muted,
+    };
+
+/// 提醒条目副行：按状态给时间语义（到期 / 完成于 / 已忽略）。
+String reminderDateLine(CareReminder reminder) => switch (reminder.status) {
+  CareReminderStatus.pending => '到期 ${formatOccurredAt(reminder.dueAt)}',
+  CareReminderStatus.completed =>
+    '完成于 ${reminder.completedAt == null ? '—' : formatOccurredAt(reminder.completedAt!)}',
+  CareReminderStatus.dismissed =>
+    '已忽略 · 原到期 ${formatOccurredAt(reminder.dueAt)}',
+};

lib/features/pets/money.dart

@@ -0,0 +1,30 @@
+/// 金额换算工具：契约传输整数分（amountCents），UI 展示以元。
+/// DTO 层保持整数分不换算（开发计划 §4.3）；本工具供 UI 层（T2-14）使用。
+library;
+
+/// 整数分 → 元展示字符串。整元不带小数（"128"），
+/// 非整元固定两位（"128.50"）。负数入参非法（契约金额非负）。
+String formatCentsAsYuan(int cents) {
+  if (cents < 0) {
+    throw ArgumentError.value(cents, 'cents', '金额不得为负');
+  }
+  final yuan = cents ~/ 100;
+  final remainder = cents % 100;
+  if (remainder == 0) return '$yuan';
+  return '$yuan.${remainder.toString().padLeft(2, '0')}';
+}
+
+/// 元输入串 → 整数分。接受整数或最多两位小数（"12"、"12.5"、"12.50"）；
+/// 空白、非法字符、超两位小数、负数返回 null（表单层据此报「金额格式不正确」）。
+int? parseYuanToCents(String input) {
+  final trimmed = input.trim();
+  final match = RegExp(r'^(\d+)(?:\.(\d{1,2}))?$').firstMatch(trimmed);
+  if (match == null) return null;
+  final yuan = int.parse(match.group(1)!);
+  final fractional = match.group(2);
+  final cents = switch (fractional) {
+    null => 0,
+    _ => int.parse(fractional.padRight(2, '0')),
+  };
+  return yuan * 100 + cents;
+}

lib/features/pets/pet_analytics.dart

@@ -0,0 +1,83 @@
+import 'package:patbond_flutter/analytics/page_view_tracker.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+
+/// pet 域埋点强类型封装（06 号规划 §1.4/§4 字典 v2 三事件；沿用
+/// 13 号规范 §3.1 惯例：枚举编译期锁死，业务代码禁止手拼事件名与属性）。
+///
+/// 三事件只覆盖「建宠」漏斗：`page_viewed(pet_form)` 承接到达段（路由
+/// 埋点自动采集），started 在表单**首次输入**触发、每次进入记一次；
+/// 编辑不设事件（06 §1.4 自觉取舍：短表单漏斗价值低于事件成本）。
+
+/// 建宠表单入口（06 §4：pet_create_started.entryPoint 枚举）。
+/// post_register_guide 预留：注册后引导流尚未落地，落地时启用。
+enum PetCreateEntryPoint {
+  profileEmptyState('profile_empty_state'),
+  petList('pet_list'),
+  postRegisterGuide('post_register_guide');
+
+  const PetCreateEntryPoint(this.value);
+
+  final String value;
+}
+
+/// 建宠失败原因（06 §4 枚举；pet_limit_reached 因产品未设上限未纳入，
+/// 若后续拍板设上限随字典增补）。客户端网络层不区分 5xx 与断网/超时
+/// （均为 ApiNetworkException），两者并入 network_error，server_error
+/// 保留给无法归类的兜底。
+enum PetCreateFailureReason {
+  validationError('validation_error'),
+  rateLimited('rate_limited'),
+  networkError('network_error'),
+  serverError('server_error');
+
+  const PetCreateFailureReason(this.value);
+
+  final String value;
+}
+
+class PetAnalytics {
+  PetAnalytics(this._track);
+
+  /// 生产传 `AnalyticsService.trackEvent`，测试传录制桩。
+  final TrackEventFn _track;
+
+  /// 进入建宠表单并产生首次输入（每次进入记一次，表单层负责去重）。
+  void createStarted({required PetCreateEntryPoint entryPoint}) {
+    _track('pet_create_started', {'entryPoint': entryPoint.value});
+  }
+
+  /// 建宠接口成功响应（漏斗事件）。
+  ///
+  /// [durationMs] 为表单打开到成功的耗时；[petIndex] 为该用户第几只宠物
+  /// （H2 假设的直接数据源，与 pet.pets 事实表交叉验证）。
+  void createSucceeded({
+    required int durationMs,
+    required PetSpecies species,
+    required int petIndex,
+  }) {
+    _track('pet_create_succeeded', {
+      'durationMs': durationMs,
+      'species': species.name,
+      'petIndex': petIndex,
+    });
+  }
+
+  /// 建宠失败：失败响应 / 超时 / 本地校验拦截。
+  ///
+  /// [errorCode] 为业务错误码（本地校验/网络错误时缺席）；
+  /// [httpStatus] 由五位业务码推导（`code ~/ 100`）；
+  /// [attemptSeq] 为本次表单会话内第几次提交尝试（从 1 起）。
+  void createFailed({
+    required PetCreateFailureReason reason,
+    required int attemptSeq,
+    int? errorCode,
+  }) {
+    _track('pet_create_failed', {
+      'failureReason': reason.value,
+      'attemptSeq': attemptSeq,
+      'errorCode': ?errorCode,
+      if (errorCode != null && errorCode >= 10000)
+        'httpStatus': errorCode ~/ 100,
+    });
+  }
+}

lib/features/pets/pet_detail_page.dart

@@ -0,0 +1,699 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/navigation/fade_route.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/empty_state_illustration.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/pet_avatar.dart';
+import 'package:patbond_flutter/core/widgets/record_type_dot.dart';
+import 'package:patbond_flutter/features/pets/care_reminders_page.dart';
+import 'package:patbond_flutter/features/pets/health_events_page.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/health_record_display.dart';
+import 'package:patbond_flutter/features/pets/money.dart';
+import 'package:patbond_flutter/features/pets/pet_analytics.dart';
+import 'package:patbond_flutter/features/pets/pet_display.dart';
+import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
+import 'package:patbond_flutter/features/pets/pet_form_page.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_controller.dart';
+import 'package:patbond_flutter/features/pets/vaccination_records_page.dart';
+import 'package:patbond_flutter/features/pets/weight_records_page.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+enum _DetailPhase { loading, ready, error, notFound }
+
+enum _SummaryPhase { loading, ready, error }
+
+enum _RemindersPhase { loading, ready, error }
+
+/// 宠物详情页（T2-12 / 05 号规范 §4.2 P2 的档案信息部分）。
+///
+/// 打开即用控制器内存副本首屏渲染，同时经 [PetsController.getPet]
+/// 拉取最新详情（同步列表副本）。四态：loading / ready / error+重试 /
+/// notFound（40401 防枚举三态同响应 → 提示后返回列表并刷新）。
+///
+/// T2-13：数据卡行接 `GET /pets/{id}/summary` 实时聚合（最新体重 /
+/// 疫苗进度 / 下一针，null 语义为空态文案而非 0/0），并作为体重历史、
+/// 疫苗记录两页的导航入口；从记录页返回即重拉摘要。
+class PetDetailPage extends StatefulWidget {
+  const PetDetailPage({
+    required this.controller,
+    required this.petId,
+    super.key,
+    this.analytics,
+    this.healthAnalytics,
+  });
+
+  final PetsController controller;
+  final String petId;
+  final PetAnalytics? analytics;
+  final HealthRecordAnalytics? healthAnalytics;
+
+  @override
+  State<PetDetailPage> createState() => _PetDetailPageState();
+}
+
+class _PetDetailPageState extends State<PetDetailPage> {
+  _DetailPhase _phase = _DetailPhase.loading;
+  Pet? _pet;
+  ApiException? _error;
+
+  _SummaryPhase _summaryPhase = _SummaryPhase.loading;
+  PetSummary? _summary;
+
+  _RemindersPhase _remindersPhase = _RemindersPhase.loading;
+  List<CareReminder> _pendingReminders = const [];
+
+  @override
+  void initState() {
+    super.initState();
+    _pet = _fromController();
+    if (_pet != null) _phase = _DetailPhase.ready;
+    _load();
+    _loadSummary();
+    _loadPendingReminders();
+  }
+
+  Pet? _fromController() {
+    for (final pet in widget.controller.pets) {
+      if (pet.id == widget.petId) return pet;
+    }
+    return null;
+  }
+
+  Future<void> _load() async {
+    if (_pet == null) {
+      setState(() => _phase = _DetailPhase.loading);
+    }
+    try {
+      final pet = await widget.controller.getPet(widget.petId);
+      if (!mounted) return;
+      setState(() {
+        _pet = pet;
+        _phase = _DetailPhase.ready;
+      });
+    } on PetNotFoundException {
+      if (!mounted) return;
+      setState(() => _phase = _DetailPhase.notFound);
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      if (_pet == null) {
+        setState(() {
+          _error = error;
+          _phase = _DetailPhase.error;
+        });
+      } else {
+        // 已有内存副本：刷新失败降级为瞬态提示，不打断阅读。
+        ScaffoldMessenger.of(
+          context,
+        ).showSnackBar(SnackBar(content: Text(petLoadErrorMessage(error))));
+      }
+    }
+  }
+
+  /// 摘要实时聚合（40401 由主链路 notFound 态承载，摘要只降级为 error 态）。
+  /// `tz` 透传设备时区固定偏移（T2-13 遗留③）：monthlyExpense 的月度
+  /// 窗口随设备时区取边界，与用户直觉一致。
+  Future<void> _loadSummary() async {
+    setState(() => _summaryPhase = _SummaryPhase.loading);
+    try {
+      final summary = await widget.controller.repository.getPetSummary(
+        widget.petId,
+        tz: tzOffsetQueryValue(DateTime.now().timeZoneOffset),
+      );
+      if (!mounted) return;
+      setState(() {
+        _summary = summary;
+        _summaryPhase = _SummaryPhase.ready;
+      });
+    } on ApiException {
+      if (!mounted) return;
+      setState(() => _summaryPhase = _SummaryPhase.error);
+    }
+  }
+
+  /// 待办提醒（?status=pending，due_at ASC）：驱动「健康提醒」卡与
+  /// 提醒入口副行——demo 时代的硬编码提醒文案自此为真实数据取代。
+  /// 失败只降级为入口副行提示，不阻塞档案主链路。
+  Future<void> _loadPendingReminders() async {
+    setState(() => _remindersPhase = _RemindersPhase.loading);
+    try {
+      final reminders = await widget.controller.repository.listCareReminders(
+        widget.petId,
+        status: CareReminderStatus.pending,
+      );
+      if (!mounted) return;
+      setState(() {
+        _pendingReminders = reminders;
+        _remindersPhase = _RemindersPhase.ready;
+      });
+    } on ApiException {
+      if (!mounted) return;
+      setState(() => _remindersPhase = _RemindersPhase.error);
+    }
+  }
+
+  Future<void> _openEdit() async {
+    final pet = _pet;
+    if (pet == null) return;
+    final updated = await Navigator.of(context).push<Pet>(
+      // 编辑态不带路由名：pet_form 专属建宠漏斗到达段（06 §1.6），
+      // 编辑曝光不计入，避免「到达→动笔」分母虚高。
+      fadePageRoute(
+        PetFormPage.edit(
+          controller: widget.controller,
+          pet: pet,
+          analytics: widget.analytics,
+        ),
+      ),
+    );
+    if (updated != null && mounted) {
+      setState(() {
+        _pet = updated;
+        _phase = _DetailPhase.ready;
+      });
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('已保存修改')));
+    }
+  }
+
+  /// 仅 owner 可改档案（40300：caregiver/viewer 改档案被拒 → 隐藏写入口）。
+  bool get _canEdit =>
+      _phase == _DetailPhase.ready && _pet?.myRole == PetRole.owner;
+
+  /// 记录写入权限档 WRITE（owner + caregiver）；viewer 隐藏录入入口。
+  bool get _canWriteRecords => _pet?.myRole != PetRole.viewer;
+
+  Future<void> _openWeights(Pet pet) async {
+    await Navigator.of(context).push(
+      // 列表页页名不在字典 v2 枚举内（06 §5.2 验收 4：字典外不上报），
+      // 曝光由 health_record_viewed 承载。
+      fadePageRoute(
+        WeightRecordsPage(
+          repository: widget.controller.repository,
+          petId: pet.id,
+          canWrite: _canWriteRecords,
+          analytics: widget.healthAnalytics,
+        ),
+      ),
+    );
+    // 记录可能已变化：返回即重拉摘要（服务端实时聚合是唯一事实来源）。
+    if (mounted) await _loadSummary();
+  }
+
+  Future<void> _openVaccinations(Pet pet) async {
+    await Navigator.of(context).push(
+      fadePageRoute(
+        VaccinationRecordsPage(
+          repository: widget.controller.repository,
+          petId: pet.id,
+          petSpecies: pet.species,
+          canWrite: _canWriteRecords,
+          analytics: widget.healthAnalytics,
+        ),
+      ),
+    );
+    if (mounted) await _loadSummary();
+  }
+
+  Future<void> _openTimeline(Pet pet) async {
+    await Navigator.of(context).push(
+      fadePageRoute(
+        HealthEventsPage(
+          repository: widget.controller.repository,
+          petId: pet.id,
+          canWrite: _canWriteRecords,
+          analytics: widget.healthAnalytics,
+        ),
+      ),
+    );
+    // 事件可能已变化：返回即重拉摘要（月度花费实时聚合）。
+    if (mounted) await _loadSummary();
+  }
+
+  Future<void> _openReminders(Pet pet) async {
+    await Navigator.of(context).push(
+      fadePageRoute(
+        CareRemindersPage(
+          repository: widget.controller.repository,
+          petId: pet.id,
+          canWrite: _canWriteRecords,
+          analytics: widget.healthAnalytics,
+        ),
+      ),
+    );
+    // 待办可能已变化（完成/忽略/新建）：返回即重拉待办。
+    if (mounted) await _loadPendingReminders();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        foregroundColor: AppColors.ink,
+        actions: [
+          if (_canEdit)
+            IconButton(
+              tooltip: '编辑资料',
+              onPressed: _openEdit,
+              icon: const Icon(Icons.edit_outlined),
+            ),
+        ],
+      ),
+      body: switch (_phase) {
+        _DetailPhase.loading => const Center(
+          child: CircularProgressIndicator(),
+        ),
+        _DetailPhase.error => Center(
+          child: Padding(
+            padding: const EdgeInsets.all(24),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                InlineErrorBanner(message: petLoadErrorMessage(_error)),
+                const SizedBox(height: 16),
+                FilledButton(onPressed: _load, child: const Text('重试')),
+              ],
+            ),
+          ),
+        ),
+        _DetailPhase.notFound => Center(
+          child: SingleChildScrollView(
+            child: EmptyStateIllustration(
+              icon: Icons.search_off_rounded,
+              title: '宠物不存在或已被删除',
+              description: '档案可能已被移除，返回列表查看最新档案',
+              ctaLabel: '返回列表',
+              onCtaPressed: () {
+                widget.controller.refresh();
+                Navigator.of(context).pop();
+              },
+            ),
+          ),
+        ),
+        _DetailPhase.ready => _content(_pet!),
+      },
+    );
+  }
+
+  Widget _content(Pet pet) {
+    return ListView(
+      padding: const EdgeInsets.fromLTRB(16, 0, 16, 30),
+      children: [
+        Column(
+          children: [
+            PetAvatar(
+              size: PetAvatarSize.xl,
+              showEditBadge: _canEdit,
+              onTap: _canEdit ? _openEdit : null,
+              semanticLabel: _canEdit ? '编辑宠物资料' : null,
+            ),
+            const SizedBox(height: 12),
+            Text(pet.name, style: Theme.of(context).textTheme.headlineSmall),
+            const SizedBox(height: 4),
+            Text(
+              petMetaLine(pet),
+              style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
+            ),
+            if (pet.status != PetStatus.active) ...[
+              const SizedBox(height: 8),
+              TagPill(
+                petStatusLabel(pet.status),
+                color: pet.status == PetStatus.lost
+                    ? AppColors.error
+                    : AppColors.muted,
+              ),
+            ],
+          ],
+        ),
+        const SizedBox(height: 24),
+        Text('健康数据', style: Theme.of(context).textTheme.titleLarge),
+        const SizedBox(height: 10),
+        _summarySection(pet),
+        const SizedBox(height: 16),
+        _recordsSection(pet),
+        const SizedBox(height: 24),
+        Text('基本资料', style: Theme.of(context).textTheme.titleLarge),
+        const SizedBox(height: 10),
+        SectionCard(
+          child: Column(
+            children: [
+              _InfoRow(label: '物种', value: petSpeciesLabel(pet.species)),
+              const _RowDivider(),
+              _InfoRow(label: '品种', value: petBreedLabel(pet)),
+              const _RowDivider(),
+              _InfoRow(label: '性别', value: petSexLabel(pet.sex)),
+              const _RowDivider(),
+              _InfoRow(
+                label: '生日',
+                value: pet.birthDate == null
+                    ? '未填写'
+                    : dateToJson(pet.birthDate!) +
+                          (pet.birthDateEstimated ? '（估算）' : ''),
+              ),
+              const _RowDivider(),
+              _InfoRow(label: '芯片号', value: pet.microchipNo ?? '未填写'),
+              const _RowDivider(),
+              _InfoRow(label: '性格', value: pet.personality ?? '未填写'),
+              const _RowDivider(),
+              _InfoRow(
+                label: '绝育日期',
+                value: pet.sterilizedOn == null
+                    ? '未填写'
+                    : dateToJson(pet.sterilizedOn!),
+              ),
+            ],
+          ),
+        ),
+        if (_canEdit) ...[
+          const SizedBox(height: 16),
+          OutlinedButton.icon(
+            onPressed: _openEdit,
+            icon: const Icon(Icons.edit_outlined, size: 17),
+            label: const Text('编辑资料'),
+          ),
+        ],
+      ],
+    );
+  }
+
+  /// 记录导航区：健康时间线与照护提醒入口（T2-14）。待办提醒非空时
+  /// 上方渲染真实数据驱动的「健康提醒」卡（正典 alert-card 形态，
+  /// 取代 demo 硬编码文案），点卡与点入口同去提醒页。
+  Widget _recordsSection(Pet pet) {
+    final nearest = _pendingReminders.isEmpty ? null : _pendingReminders.first;
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: [
+        if (nearest != null) ...[
+          _ReminderAlertCard(
+            reminder: nearest,
+            overdue: isReminderOverdue(nearest, DateTime.now()),
+            onTap: () => _openReminders(pet),
+          ),
+          const SizedBox(height: 10),
+        ],
+        SectionCard(
+          padding: EdgeInsets.zero,
+          child: Column(
+            children: [
+              ListTile(
+                leading: const Icon(
+                  Icons.event_note_outlined,
+                  color: AppColors.inkSoft,
+                ),
+                title: const Text('健康时间线', style: TextStyle(fontSize: 14)),
+                subtitle: const Text(
+                  '就医 · 喂养 · 驱虫 · 洗护 · 测量 · 随手记',
+                  style: TextStyle(color: AppColors.inkSoft, fontSize: 12),
+                ),
+                trailing: const Icon(
+                  Icons.chevron_right,
+                  color: AppColors.muted,
+                ),
+                onTap: () => _openTimeline(pet),
+              ),
+              const Divider(height: 1, thickness: 1, color: AppColors.border),
+              ListTile(
+                leading: const Icon(
+                  Icons.notifications_outlined,
+                  color: AppColors.inkSoft,
+                ),
+                title: const Text('照护提醒', style: TextStyle(fontSize: 14)),
+                subtitle: Text(
+                  switch (_remindersPhase) {
+                    _RemindersPhase.loading => '加载中…',
+                    _RemindersPhase.error => '提醒加载失败，点击查看',
+                    _RemindersPhase.ready when _pendingReminders.isEmpty =>
+                      '暂无待办提醒',
+                    _RemindersPhase.ready => '${_pendingReminders.length} 条待办',
+                  },
+                  style: const TextStyle(
+                    color: AppColors.inkSoft,
+                    fontSize: 12,
+                  ),
+                ),
+                trailing: const Icon(
+                  Icons.chevron_right,
+                  color: AppColors.muted,
+                ),
+                onTap: () => _openReminders(pet),
+              ),
+            ],
+          ),
+        ),
+      ],
+    );
+  }
+
+  /// 数据卡行（05 §4.2 stat-row）：四卡取数全部来自 summary 实时聚合，
+  /// 不落任何本地展示字符串（第 4.3 节红线）。null 语义 → 空态文案。
+  Widget _summarySection(Pet pet) {
+    switch (_summaryPhase) {
+      case _SummaryPhase.loading:
+        return const SizedBox(
+          height: 86,
+          child: Center(
+            child: SizedBox(
+              width: 22,
+              height: 22,
+              child: CircularProgressIndicator(strokeWidth: 2),
+            ),
+          ),
+        );
+      case _SummaryPhase.error:
+        return Row(
+          children: [
+            const Expanded(
+              child: Text(
+                '健康数据加载失败',
+                style: TextStyle(color: AppColors.error, fontSize: 12),
+              ),
+            ),
+            TextButton(onPressed: _loadSummary, child: const Text('重试')),
+          ],
+        );
+      case _SummaryPhase.ready:
+        final summary = _summary!;
+        final weight = summary.latestWeight;
+        final progress = summary.vaccinationProgress;
+        final next = summary.nextVaccination;
+        final expense = summary.monthlyExpense;
+        return IntrinsicHeight(
+          child: Row(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              Expanded(
+                child: _SummaryCard(
+                  icon: recordTypeStyles[RecordType.weight]!.icon,
+                  iconColor: recordTypeStyles[RecordType.weight]!.iconColor,
+                  value: weight == null
+                      ? '暂无记录'
+                      : '${formatWeightKg(weight.weightKg)} kg',
+                  emphasized: weight != null,
+                  label: '最新体重',
+                  onTap: () => _openWeights(pet),
+                ),
+              ),
+              const SizedBox(width: 10),
+              Expanded(
+                child: _SummaryCard(
+                  icon: recordTypeStyles[RecordType.vaccine]!.icon,
+                  iconColor: recordTypeStyles[RecordType.vaccine]!.iconColor,
+                  // 契约：totalDoses=0 → 整体 null（不是 0/0）→ 空态文案。
+                  value: progress == null
+                      ? '未登记'
+                      : '${vaccinationProgressLabel(progress)} 针',
+                  emphasized: progress != null,
+                  label: '疫苗进度',
+                  onTap: () => _openVaccinations(pet),
+                ),
+              ),
+              const SizedBox(width: 10),
+              Expanded(
+                child: _SummaryCard(
+                  icon: recordTypeStyles[RecordType.vaccine]!.icon,
+                  iconColor: recordTypeStyles[RecordType.vaccine]!.iconColor,
+                  value: next == null ? '暂无安排' : dateToJson(next.dueOn),
+                  emphasized: next != null,
+                  label: next == null ? '下一针' : '下一针·${next.vaccineName}',
+                  onTap: () => _openVaccinations(pet),
+                ),
+              ),
+              const SizedBox(width: 10),
+              Expanded(
+                child: _SummaryCard(
+                  icon: Icons.payments_outlined,
+                  iconColor: AppColors.primaryStrong,
+                  // monthlyExpense 恒非 null（契约）；金额整数分 → 元展示。
+                  value: '¥${formatCentsAsYuan(expense.amountCents)}',
+                  emphasized: expense.amountCents > 0,
+                  label: '本月花费',
+                  onTap: () => _openTimeline(pet),
+                ),
+              ),
+            ],
+          ),
+        );
+    }
+  }
+}
+
+/// 数据卡（正典 stat-card 形态）：图标 + 数值 15/w800 + 标签 12 inkSoft；
+/// 空态数值降级 inkSoft 常规字重（区分「有数据」与「空态」两种视觉）。
+class _SummaryCard extends StatelessWidget {
+  const _SummaryCard({
+    required this.icon,
+    required this.iconColor,
+    required this.value,
+    required this.label,
+    required this.emphasized,
+    this.onTap,
+  });
+
+  final IconData icon;
+  final Color iconColor;
+  final String value;
+  final String label;
+  final bool emphasized;
+  final VoidCallback? onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(AppRadius.xl),
+        child: Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 12),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Icon(icon, size: 18, color: iconColor),
+              const SizedBox(height: 8),
+              Text(
+                value,
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+                style: TextStyle(
+                  color: emphasized ? AppColors.ink : AppColors.inkSoft,
+                  fontSize: emphasized ? 15 : 13,
+                  fontWeight: emphasized ? FontWeight.w800 : FontWeight.w600,
+                ),
+              ),
+              const SizedBox(height: 4),
+              Text(
+                label,
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+                style: const TextStyle(color: AppColors.inkSoft, fontSize: 11),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+/// 键值行（05 §4.3 P3 风格：字段名 12 inkSoft / 值 bodyMedium ink）。
+class _InfoRow extends StatelessWidget {
+  const _InfoRow({required this.label, required this.value});
+
+  final String label;
+  final String value;
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 7),
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          SizedBox(
+            width: 72,
+            child: Text(
+              label,
+              style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
+            ),
+          ),
+          Expanded(
+            child: Text(value, style: Theme.of(context).textTheme.bodyMedium),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _RowDivider extends StatelessWidget {
+  const _RowDivider();
+
+  @override
+  Widget build(BuildContext context) {
+    return const Divider(height: 1, thickness: 1, color: AppColors.border);
+  }
+}
+
+/// 「健康提醒」卡（正典 alert-card：successSurface 底 + dot + 文字）：
+/// 数据源为最近到期的待办提醒（真实数据驱动，取代 demo 硬编码文案）；
+/// 逾期时文案切警示深色（双通道：前缀文字 + 颜色）。
+class _ReminderAlertCard extends StatelessWidget {
+  const _ReminderAlertCard({
+    required this.reminder,
+    required this.overdue,
+    this.onTap,
+  });
+
+  final CareReminder reminder;
+  final bool overdue;
+  final VoidCallback? onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final textColor = overdue ? AppColors.errorDark : AppColors.successInk;
+    return Material(
+      color: AppColors.successSurface,
+      borderRadius: BorderRadius.circular(AppRadius.lg),
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(AppRadius.lg),
+        child: Padding(
+          padding: const EdgeInsets.all(14),
+          child: Row(
+            children: [
+              Container(
+                width: 8,
+                height: 8,
+                decoration: BoxDecoration(
+                  shape: BoxShape.circle,
+                  color: textColor,
+                ),
+              ),
+              const SizedBox(width: 10),
+              Expanded(
+                child: Text(
+                  '健康提醒：${reminder.title}'
+                  '（${overdue ? '已逾期' : '${dateToJson(reminder.dueAt.toLocal())} 到期'}）',
+                  maxLines: 2,
+                  overflow: TextOverflow.ellipsis,
+                  style: TextStyle(
+                    color: textColor,
+                    fontSize: 12,
+                    fontWeight: FontWeight.w600,
+                  ),
+                ),
+              ),
+              const SizedBox(width: 8),
+              Icon(Icons.chevron_right, size: 18, color: textColor),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/features/pets/pet_display.dart

@@ -0,0 +1,56 @@
+/// 宠物档案展示文案的纯函数集合（列表 / 详情 / 表单共用，可单测）。
+library;
+
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+
+String petSpeciesLabel(PetSpecies species) => switch (species) {
+  PetSpecies.dog => '狗狗',
+  PetSpecies.cat => '猫咪',
+  PetSpecies.other => '其他',
+};
+
+String petSexLabel(PetSex sex) => switch (sex) {
+  PetSex.male => '男孩',
+  PetSex.female => '女孩',
+  PetSex.unknown => '性别未知',
+};
+
+String petStatusLabel(PetStatus status) => switch (status) {
+  PetStatus.active => '正常',
+  PetStatus.lost => '走失中',
+  PetStatus.deceased => '已离世',
+  PetStatus.archived => '已归档',
+};
+
+/// 品种展示：目录品种名 > 自定义品种名 > 未知（Pet 响应恰有其一非空，
+/// 双空为兜底）。
+String petBreedLabel(Pet pet) =>
+    pet.breedDisplayName ?? pet.customBreedName ?? '品种未知';
+
+/// 年龄：满一岁按「N 岁」、不满一岁按「N 个月」、当月新生「未满月」；
+/// 生日缺席或晚于今天为「年龄未知」。
+String petAgeLabel(DateTime? birthDate, {DateTime? now}) {
+  if (birthDate == null) return '年龄未知';
+  final today = now ?? DateTime.now();
+  var months =
+      (today.year - birthDate.year) * 12 + today.month - birthDate.month;
+  if (today.day < birthDate.day) months--;
+  if (months < 0) return '年龄未知';
+  if (months == 0) return '未满月';
+  if (months < 12) return '$months 个月';
+  return '${months ~/ 12} 岁';
+}
+
+/// 列表卡 / 详情头的元信息行：「柴犬 · 男孩 · 2 岁」。
+String petMetaLine(Pet pet, {DateTime? now}) =>
+    '${petBreedLabel(pet)} · ${petSexLabel(pet.sex)} · '
+    '${petAgeLabel(pet.birthDate, now: now)}';
+
+/// 加载失败的用户文案（一迭代三层错误模型：不可归属字段的加载错误
+/// 走横幅；服务端原始 message 不上屏）。
+String petLoadErrorMessage(ApiException? error) => switch (error) {
+  ApiNetworkException _ => '网络异常，请检查网络后重试',
+  ApiRateLimitException _ => '请求过于频繁，请稍后再试',
+  _ => '加载失败，请稍后重试',
+};

lib/features/pets/pet_exceptions.dart

@@ -0,0 +1,83 @@
+import 'package:patbond_flutter/core/network/api_exception.dart';
+
+/// pets 域类型化业务异常（契约 v1.2.0 定型的 8 个新错误码，
+/// 21 号收口报告 §1）。全部继承 [ApiBusinessException]，
+/// 既有按基类捕获的通用错误处理不受影响。
+
+/// 40300：对可见宠物无相应操作权限（viewer 写记录、caregiver/viewer 改档案）。
+final class PetAccessDeniedException extends ApiBusinessException {
+  const PetAccessDeniedException({required super.message})
+    : super(code: ApiCodes.petAccessDenied);
+}
+
+/// 40401：宠物不存在 / 已软删 / 与调用者无关系（防枚举，三种情况响应一致）。
+final class PetNotFoundException extends ApiBusinessException {
+  const PetNotFoundException({required super.message})
+    : super(code: ApiCodes.petNotFound);
+}
+
+/// 40402：记录不存在或记录所属宠物对调用者不可见（记录级防枚举）。
+final class PetRecordNotFoundException extends ApiBusinessException {
+  const PetRecordNotFoundException({required super.message})
+    : super(code: ApiCodes.recordNotFound);
+}
+
+/// 40902：乐观锁版本冲突（version 过期；提醒的条件更新守卫落空同码）。
+/// 客户端处理：刷新取新数据后重提。
+final class PetVersionConflictException extends ApiBusinessException {
+  const PetVersionConflictException({required super.message})
+    : super(code: ApiCodes.versionConflict);
+}
+
+/// 40903：芯片号已被登记（跨用户唯一）。
+final class MicrochipTakenException extends ApiBusinessException {
+  const MicrochipTakenException({required super.message})
+    : super(code: ApiCodes.microchipTaken);
+}
+
+/// 40904：同宠物同疫苗同系列同剂次的非 cancelled 疫苗记录已存在
+/// （cancel 后同剂次可重新登记）。
+final class VaccinationDoseExistsException extends ApiBusinessException {
+  const VaccinationDoseExistsException({required super.message})
+    : super(code: ApiCodes.vaccinationDoseExists);
+}
+
+/// 42201：疫苗状态机非法迁移或状态-日期规则违反（HTTP 422）。
+final class VaccinationRuleException extends ApiBusinessException {
+  const VaccinationRuleException({required super.message})
+    : super(code: ApiCodes.vaccinationRuleViolation);
+}
+
+/// 42202：提醒状态机非法迁移或 completed-completedAt 一致性违反（HTTP 422）。
+final class CareReminderRuleException extends ApiBusinessException {
+  const CareReminderRuleException({required super.message})
+    : super(code: ApiCodes.careReminderRuleViolation);
+}
+
+/// 把通用业务异常按 pets 域错误码升格为类型化异常；
+/// 未覆盖的码（40000 参数错误等）原样返回，沿用通用处理。
+ApiBusinessException mapPetBusinessException(ApiBusinessException error) {
+  return switch (error.code) {
+    ApiCodes.petAccessDenied => PetAccessDeniedException(
+      message: error.message,
+    ),
+    ApiCodes.petNotFound => PetNotFoundException(message: error.message),
+    ApiCodes.recordNotFound => PetRecordNotFoundException(
+      message: error.message,
+    ),
+    ApiCodes.versionConflict => PetVersionConflictException(
+      message: error.message,
+    ),
+    ApiCodes.microchipTaken => MicrochipTakenException(message: error.message),
+    ApiCodes.vaccinationDoseExists => VaccinationDoseExistsException(
+      message: error.message,
+    ),
+    ApiCodes.vaccinationRuleViolation => VaccinationRuleException(
+      message: error.message,
+    ),
+    ApiCodes.careReminderRuleViolation => CareReminderRuleException(
+      message: error.message,
+    ),
+    _ => error,
+  };
+}

lib/features/pets/pet_form_page.dart

@@ -0,0 +1,714 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/semantics.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/app_text_field.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/pet_avatar.dart';
+import 'package:patbond_flutter/core/widgets/primary_button.dart';
+import 'package:patbond_flutter/features/pets/pet_analytics.dart';
+import 'package:patbond_flutter/features/pets/pet_display.dart';
+import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_controller.dart';
+
+/// 品种下拉里「自定义品种」哨兵值（与目录 breedId 互斥）。
+const _customBreedSentinel = '__custom__';
+
+/// 建宠 / 编辑宠物资料表单页（T2-12）。
+///
+/// - 字段对齐冻结契约：昵称*、物种*（创建后不可改）、性别*（契约必填）、
+///   品种（目录选择与自定义互斥、整体替换）、生日（+是否估算）、
+///   芯片号、性格；头像按 ADR-010 本地占位、不做上传。
+/// - 错误分层沿用登录纵切：失焦+提交双校验走 errorText（onChanged 即清）、
+///   不可归属错误走 InlineErrorBanner、网络瞬态走 SnackBar+重试。
+/// - 409/40902 版本冲突：提示「已被修改」并自动拉取最新版本（保留用户
+///   输入、更新乐观锁 version），用户核对后重新保存；40903 芯片号冲突
+///   为字段级报错。
+/// - 埋点（仅创建模式）：首次输入触发 pet_create_started；成功/失败
+///   经 [PetAnalytics] 强类型上报。表单页路由名 pet_form 由调用方在
+///   push 时给定（创建态），page_viewed 走既有 RouteObserver。
+class PetFormPage extends StatefulWidget {
+  const PetFormPage.create({
+    required this.controller,
+    super.key,
+    this.analytics,
+    this.entryPoint = PetCreateEntryPoint.petList,
+  }) : pet = null;
+
+  const PetFormPage.edit({
+    required this.controller,
+    required Pet this.pet,
+    super.key,
+    this.analytics,
+  }) : entryPoint = null;
+
+  final PetsController controller;
+
+  /// null 为创建模式。
+  final Pet? pet;
+
+  final PetAnalytics? analytics;
+
+  /// 创建模式的入口（pet_create_started.entryPoint）。
+  final PetCreateEntryPoint? entryPoint;
+
+  bool get isCreate => pet == null;
+
+  @override
+  State<PetFormPage> createState() => _PetFormPageState();
+}
+
+class _PetFormPageState extends State<PetFormPage> {
+  final _nameCtrl = TextEditingController();
+  final _customBreedCtrl = TextEditingController();
+  final _microchipCtrl = TextEditingController();
+  final _personalityCtrl = TextEditingController();
+
+  PetSpecies _species = PetSpecies.dog;
+  PetSex? _sex;
+  DateTime? _birthDate;
+  bool _birthDateEstimated = false;
+
+  /// 目录 breedId 或 [_customBreedSentinel]；null 未选择。
+  String? _breedChoice;
+  List<Breed>? _breeds;
+  bool _breedsLoading = false;
+  bool _breedsFailed = false;
+
+  String? _nameError;
+  String? _sexError;
+  String? _breedError;
+  String? _microchipError;
+  String? _formError;
+  bool _submitting = false;
+
+  /// 编辑基线：40902 冲突刷新后更新（version 与差量计算的比较基准）。
+  Pet? _basePet;
+
+  bool _startedFired = false;
+  int _attemptSeq = 0;
+  late final DateTime _openedAt;
+
+  @override
+  void initState() {
+    super.initState();
+    _openedAt = DateTime.now();
+    final pet = widget.pet;
+    _basePet = pet;
+    if (pet != null) {
+      _nameCtrl.text = pet.name;
+      _species = pet.species;
+      _sex = pet.sex;
+      _birthDate = pet.birthDate;
+      _birthDateEstimated = pet.birthDateEstimated;
+      _microchipCtrl.text = pet.microchipNo ?? '';
+      _personalityCtrl.text = pet.personality ?? '';
+      if (pet.customBreedName != null) {
+        _breedChoice = _customBreedSentinel;
+        _customBreedCtrl.text = pet.customBreedName!;
+      } else {
+        _breedChoice = pet.breedId;
+      }
+    }
+    _loadBreeds();
+  }
+
+  @override
+  void dispose() {
+    _nameCtrl.dispose();
+    _customBreedCtrl.dispose();
+    _microchipCtrl.dispose();
+    _personalityCtrl.dispose();
+    super.dispose();
+  }
+
+  // ---- 品种目录（网络字典：加载 / 失败重试 / 空目录自定义兜底）----
+
+  Future<void> _loadBreeds() async {
+    setState(() {
+      _breedsLoading = true;
+      _breedsFailed = false;
+    });
+    try {
+      final breeds = await widget.controller.loadBreeds(_species);
+      if (!mounted) return;
+      setState(() {
+        _breeds = breeds;
+        _breedsLoading = false;
+      });
+    } on ApiException {
+      if (!mounted) return;
+      setState(() {
+        _breedsLoading = false;
+        _breedsFailed = true;
+        // 目录不可用不阻塞建档：回落到自定义品种输入。
+        _breedChoice ??= _customBreedSentinel;
+      });
+    }
+  }
+
+  // ---- 埋点（仅创建模式）----
+
+  void _markStarted() {
+    if (!widget.isCreate || _startedFired) return;
+    _startedFired = true;
+    widget.analytics?.createStarted(entryPoint: widget.entryPoint!);
+  }
+
+  void _trackCreateFailed(PetCreateFailureReason reason, [int? errorCode]) {
+    if (!widget.isCreate) return;
+    widget.analytics?.createFailed(
+      reason: reason,
+      attemptSeq: _attemptSeq,
+      errorCode: errorCode,
+    );
+  }
+
+  // ---- 校验（失焦 + 提交双校验，onChanged 即清）----
+
+  String? _validateName() => _nameCtrl.text.trim().isEmpty ? '请输入宠物昵称' : null;
+
+  String? _validateSex() => _sex == null ? '请选择性别' : null;
+
+  String? _validateBreed() {
+    if (_breedChoice == null) return '请选择品种';
+    if (_breedChoice == _customBreedSentinel &&
+        _customBreedCtrl.text.trim().isEmpty) {
+      return '请输入品种名称';
+    }
+    return null;
+  }
+
+  void _clearError(void Function() clear) {
+    setState(() {
+      clear();
+      _formError = null;
+    });
+  }
+
+  void _showFormError(String message) {
+    setState(() => _formError = message);
+    SemanticsService.sendAnnouncement(
+      View.of(context),
+      message,
+      TextDirection.ltr,
+    );
+  }
+
+  // ---- 提交 ----
+
+  Future<void> _submit() async {
+    if (_submitting) return;
+    _attemptSeq++;
+    final nameError = _validateName();
+    final sexError = _validateSex();
+    final breedError = _validateBreed();
+    if (nameError != null || sexError != null || breedError != null) {
+      setState(() {
+        _nameError = nameError;
+        _sexError = sexError;
+        _breedError = breedError;
+      });
+      _trackCreateFailed(PetCreateFailureReason.validationError);
+      return;
+    }
+
+    setState(() {
+      _submitting = true;
+      _formError = null;
+    });
+    try {
+      if (widget.isCreate) {
+        await _create();
+      } else {
+        await _update();
+      }
+    } on MicrochipTakenException {
+      if (!mounted) return;
+      setState(() => _microchipError = '该芯片号已被登记，请核对后重试');
+      _trackCreateFailed(PetCreateFailureReason.validationError, 40903);
+    } on PetVersionConflictException {
+      await _handleVersionConflict();
+    } on PetNotFoundException {
+      if (!mounted) return;
+      // 编辑目标已不存在（防枚举三态同响应）：返回列表并刷新。
+      final navigator = Navigator.of(context);
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('宠物不存在或已被删除')));
+      widget.controller.refresh();
+      navigator.pop();
+    } on PetAccessDeniedException {
+      if (!mounted) return;
+      _showFormError('你没有权限修改该宠物的资料');
+    } on ApiRateLimitException {
+      if (!mounted) return;
+      _showFormError('操作过于频繁，请稍后再试');
+      _trackCreateFailed(PetCreateFailureReason.rateLimited);
+    } on ApiBusinessException catch (error) {
+      if (!mounted) return;
+      _showFormError(
+        error.code == ApiCodes.paramError ? '请检查填写内容后重试' : '保存失败，请稍后重试',
+      );
+      _trackCreateFailed(
+        error.code == ApiCodes.paramError
+            ? PetCreateFailureReason.validationError
+            : PetCreateFailureReason.serverError,
+        error.code,
+      );
+    } on ApiNetworkException {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: const Text('网络异常，请检查网络后重试'),
+          action: SnackBarAction(label: '重试', onPressed: _submit),
+        ),
+      );
+      _trackCreateFailed(PetCreateFailureReason.networkError);
+    } on SessionExpiredException {
+      // 会话失效：认证状态机自动回登录页，表单不再提示。
+    } finally {
+      if (mounted) setState(() => _submitting = false);
+    }
+  }
+
+  bool get _isCustomBreed => _breedChoice == _customBreedSentinel;
+
+  Future<void> _create() async {
+    final request = CreatePetRequest(
+      name: _nameCtrl.text.trim(),
+      species: _species,
+      sex: _sex!,
+      breedId: _isCustomBreed ? null : _breedChoice,
+      customBreedName: _isCustomBreed ? _customBreedCtrl.text.trim() : null,
+      birthDate: _birthDate,
+      birthDateEstimated: _birthDate != null ? _birthDateEstimated : null,
+      microchipNo: _textOrNull(_microchipCtrl),
+      personality: _textOrNull(_personalityCtrl),
+    );
+    // petIndex：该用户第几只宠物（H2 假设数据源）。
+    final petIndex = widget.controller.pets.length + 1;
+    final pet = await widget.controller.createPet(request);
+    widget.analytics?.createSucceeded(
+      durationMs: DateTime.now().difference(_openedAt).inMilliseconds,
+      species: _species,
+      petIndex: petIndex,
+    );
+    if (mounted) Navigator.of(context).pop(pet);
+  }
+
+  Future<void> _update() async {
+    final request = _buildUpdateRequest();
+    if (request == null) {
+      // 无变更：直接返回，不发空 PATCH。
+      Navigator.of(context).pop();
+      return;
+    }
+    final pet = await widget.controller.updatePet(_basePet!.id, request);
+    if (mounted) Navigator.of(context).pop(pet);
+  }
+
+  /// 差量构造部分更新请求（缺席字段不发；契约不支持清空回 null，
+  /// 清空的输入视为未变更）。全部未变更返回 null。
+  UpdatePetRequest? _buildUpdateRequest() {
+    final base = _basePet!;
+    final name = _nameCtrl.text.trim();
+
+    final String? breedId = _isCustomBreed ? null : _breedChoice;
+    final String? customName = _isCustomBreed
+        ? _customBreedCtrl.text.trim()
+        : null;
+    final breedChanged =
+        breedId != base.breedId || customName != base.customBreedName;
+
+    final microchip = _textOrNull(_microchipCtrl);
+    final personality = _textOrNull(_personalityCtrl);
+    final birthChanged =
+        _birthDate != null && !_sameDate(_birthDate, base.birthDate);
+    final estimatedChanged =
+        _birthDate != null && _birthDateEstimated != base.birthDateEstimated;
+
+    final request = UpdatePetRequest(
+      version: base.version,
+      name: name != base.name ? name : null,
+      sex: _sex != base.sex ? _sex : null,
+      // 品种对整体替换：任一半变化则整对发送。
+      breedId: breedChanged ? breedId : null,
+      customBreedName: breedChanged ? customName : null,
+      birthDate: birthChanged ? _birthDate : null,
+      birthDateEstimated: estimatedChanged ? _birthDateEstimated : null,
+      microchipNo: microchip != null && microchip != base.microchipNo
+          ? microchip
+          : null,
+      personality: personality != null && personality != base.personality
+          ? personality
+          : null,
+    );
+    // 只剩 version 一个键 → 无实际变更。
+    return request.toJson().length == 1 ? null : request;
+  }
+
+  /// 40902：提示 + 刷新路径——拉取最新版本更新乐观锁基线，
+  /// 保留用户输入，由用户核对后重新保存（T2-11 §7 定型路径）。
+  Future<void> _handleVersionConflict() async {
+    try {
+      final fresh = await widget.controller.getPet(_basePet!.id);
+      if (!mounted) return;
+      setState(() => _basePet = fresh);
+      _showFormError('资料已在其他设备被修改，已获取最新版本，请核对后重新保存');
+    } on ApiException {
+      if (!mounted) return;
+      _showFormError('资料已在其他设备被修改，请返回后刷新重试');
+    }
+  }
+
+  static String? _textOrNull(TextEditingController controller) {
+    final text = controller.text.trim();
+    return text.isEmpty ? null : text;
+  }
+
+  static bool _sameDate(DateTime? a, DateTime? b) {
+    if (a == null || b == null) return a == b;
+    return a.year == b.year && a.month == b.month && a.day == b.day;
+  }
+
+  // ---- UI ----
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        foregroundColor: AppColors.ink,
+        title: Text(widget.isCreate ? '添加宠物' : '编辑宠物资料'),
+        centerTitle: true,
+        titleTextStyle: const TextStyle(
+          color: AppColors.ink,
+          fontSize: 16,
+          fontWeight: FontWeight.w800,
+        ),
+      ),
+      body: SafeArea(
+        child: ListView(
+          padding: const EdgeInsets.fromLTRB(20, 4, 20, 30),
+          children: [
+            // 头像本地占位：M2 不做上传（ADR-010 / D2-1）。
+            const Center(child: PetAvatar(size: PetAvatarSize.xl)),
+            const SizedBox(height: 18),
+            Focus(
+              onFocusChange: (hasFocus) {
+                if (!hasFocus && mounted) {
+                  setState(() => _nameError = _validateName());
+                }
+              },
+              child: AppTextField(
+                label: '宠物昵称',
+                controller: _nameCtrl,
+                prefixIcon: Icons.pets_outlined,
+                errorText: _nameError,
+                enabled: !_submitting,
+                textInputAction: TextInputAction.next,
+                onChanged: (_) {
+                  _markStarted();
+                  if (_nameError != null || _formError != null) {
+                    _clearError(() => _nameError = null);
+                  }
+                },
+              ),
+            ),
+            const SizedBox(height: 18),
+            _FieldLabel(widget.isCreate ? '物种' : '物种（创建后不可修改）'),
+            const SizedBox(height: 8),
+            if (widget.isCreate)
+              SegmentedButton<PetSpecies>(
+                segments: [
+                  for (final species in PetSpecies.values)
+                    ButtonSegment(
+                      value: species,
+                      label: Text(petSpeciesLabel(species)),
+                    ),
+                ],
+                selected: {_species},
+                onSelectionChanged: _submitting
+                    ? null
+                    : (value) {
+                        _markStarted();
+                        setState(() {
+                          _species = value.first;
+                          // 物种切换：品种目录随物种重载，已选品种作废。
+                          _breedChoice = null;
+                          _breedError = null;
+                          _breeds = null;
+                        });
+                        _loadBreeds();
+                      },
+              )
+            else
+              Text(
+                petSpeciesLabel(_species),
+                style: Theme.of(context).textTheme.bodyMedium,
+              ),
+            const SizedBox(height: 18),
+            const _FieldLabel('性别'),
+            const SizedBox(height: 8),
+            SegmentedButton<PetSex>(
+              emptySelectionAllowed: true,
+              segments: const [
+                ButtonSegment(
+                  value: PetSex.male,
+                  icon: Icon(Icons.male),
+                  label: Text('男孩'),
+                ),
+                ButtonSegment(
+                  value: PetSex.female,
+                  icon: Icon(Icons.female),
+                  label: Text('女孩'),
+                ),
+                ButtonSegment(value: PetSex.unknown, label: Text('未知')),
+              ],
+              selected: {?_sex},
+              onSelectionChanged: _submitting
+                  ? null
+                  : (value) {
+                      _markStarted();
+                      setState(() {
+                        _sex = value.isEmpty ? null : value.first;
+                        _sexError = null;
+                        _formError = null;
+                      });
+                    },
+            ),
+            if (_sexError != null) ...[
+              const SizedBox(height: 6),
+              _FieldError(_sexError!),
+            ],
+            const SizedBox(height: 18),
+            const _FieldLabel('品种'),
+            const SizedBox(height: 8),
+            ..._breedSection(),
+            const SizedBox(height: 18),
+            _dateTile(),
+            if (_birthDate != null)
+              CheckboxListTile(
+                dense: true,
+                contentPadding: EdgeInsets.zero,
+                controlAffinity: ListTileControlAffinity.leading,
+                title: const Text('生日为估算日期', style: TextStyle(fontSize: 13)),
+                value: _birthDateEstimated,
+                onChanged: _submitting
+                    ? null
+                    : (value) {
+                        _markStarted();
+                        setState(() => _birthDateEstimated = value ?? false);
+                      },
+              ),
+            const SizedBox(height: 12),
+            AppTextField(
+              label: '芯片号（可选）',
+              controller: _microchipCtrl,
+              prefixIcon: Icons.qr_code_2_outlined,
+              errorText: _microchipError,
+              enabled: !_submitting,
+              textInputAction: TextInputAction.next,
+              onChanged: (_) {
+                _markStarted();
+                if (_microchipError != null || _formError != null) {
+                  _clearError(() => _microchipError = null);
+                }
+              },
+            ),
+            const SizedBox(height: 12),
+            AppTextField(
+              label: '性格（可选，如：活泼）',
+              controller: _personalityCtrl,
+              prefixIcon: Icons.emoji_emotions_outlined,
+              enabled: !_submitting,
+              textInputAction: TextInputAction.done,
+              onChanged: (_) => _markStarted(),
+              onSubmitted: (_) => _submit(),
+            ),
+            if (_formError != null) ...[
+              const SizedBox(height: 16),
+              InlineErrorBanner(message: _formError!),
+            ],
+            const SizedBox(height: 24),
+            PrimaryButton(
+              label: widget.isCreate ? '保存档案' : '保存修改',
+              isLoading: _submitting,
+              onPressed: _submit,
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  List<Widget> _breedSection() {
+    if (_breedsLoading) {
+      return const [
+        SizedBox(
+          height: 52,
+          child: Center(child: CircularProgressIndicator(strokeWidth: 2)),
+        ),
+      ];
+    }
+
+    final widgets = <Widget>[];
+    if (_breedsFailed) {
+      widgets
+        ..add(
+          Row(
+            children: [
+              const Expanded(
+                child: Text(
+                  '品种目录加载失败，可先填写自定义品种',
+                  style: TextStyle(color: AppColors.error, fontSize: 12),
+                ),
+              ),
+              TextButton(onPressed: _loadBreeds, child: const Text('重试')),
+            ],
+          ),
+        )
+        ..add(const SizedBox(height: 8));
+    } else {
+      final breeds = _breeds ?? const <Breed>[];
+      final knownIds = breeds.map((breed) => breed.id).toSet();
+      final base = _basePet;
+      widgets
+        ..add(
+          DropdownButtonFormField<String>(
+            initialValue: _breedChoice,
+            decoration: InputDecoration(
+              labelText: '品种',
+              errorText: _isCustomBreed ? null : _breedError,
+            ),
+            items: [
+              // 编辑时目录中缺席的既有品种保底成项，避免下拉值失配。
+              if (base?.breedId != null && !knownIds.contains(base!.breedId))
+                DropdownMenuItem(
+                  value: base.breedId,
+                  child: Text(base.breedDisplayName ?? '当前品种'),
+                ),
+              for (final breed in breeds)
+                DropdownMenuItem(
+                  value: breed.id,
+                  child: Text(breed.displayName),
+                ),
+              const DropdownMenuItem(
+                value: _customBreedSentinel,
+                child: Text('自定义品种…'),
+              ),
+            ],
+            onChanged: _submitting
+                ? null
+                : (value) {
+                    _markStarted();
+                    setState(() {
+                      _breedChoice = value;
+                      _breedError = null;
+                      _formError = null;
+                    });
+                  },
+          ),
+        )
+        ..add(const SizedBox(height: 12));
+    }
+
+    if (_isCustomBreed) {
+      widgets.add(
+        Focus(
+          onFocusChange: (hasFocus) {
+            if (!hasFocus && mounted) {
+              setState(() => _breedError = _validateBreed());
+            }
+          },
+          child: AppTextField(
+            label: '品种名称',
+            controller: _customBreedCtrl,
+            prefixIcon: Icons.edit_note_outlined,
+            errorText: _breedError,
+            enabled: !_submitting,
+            textInputAction: TextInputAction.next,
+            onChanged: (_) {
+              _markStarted();
+              if (_breedError != null || _formError != null) {
+                _clearError(() => _breedError = null);
+              }
+            },
+          ),
+        ),
+      );
+    } else if (_breedError != null && _breedsFailed) {
+      widgets.add(_FieldError(_breedError!));
+    }
+    return widgets;
+  }
+
+  Widget _dateTile() {
+    return ListTile(
+      shape: RoundedRectangleBorder(
+        side: const BorderSide(color: AppColors.border),
+        borderRadius: BorderRadius.circular(AppRadius.lg),
+      ),
+      tileColor: AppColors.surface,
+      leading: const Icon(Icons.cake_outlined, color: AppColors.muted),
+      title: const Text('生日（可选）', style: TextStyle(fontSize: 14)),
+      subtitle: Text(
+        _birthDate == null ? '未填写' : dateToJson(_birthDate!),
+        style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
+      ),
+      trailing: const Icon(
+        Icons.calendar_month_outlined,
+        color: AppColors.muted,
+      ),
+      enabled: !_submitting,
+      onTap: () async {
+        final now = DateTime.now();
+        final value = await showDatePicker(
+          context: context,
+          initialDate: _birthDate ?? DateTime(now.year - 1, now.month),
+          firstDate: DateTime(1990),
+          lastDate: now,
+        );
+        if (value != null && mounted) {
+          _markStarted();
+          setState(() => _birthDate = value);
+        }
+      },
+    );
+  }
+}
+
+class _FieldLabel extends StatelessWidget {
+  const _FieldLabel(this.text);
+
+  final String text;
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+      text,
+      style: const TextStyle(
+        color: AppColors.inkSoft,
+        fontSize: 13,
+        fontWeight: FontWeight.w600,
+      ),
+    );
+  }
+}
+
+class _FieldError extends StatelessWidget {
+  const _FieldError(this.text);
+
+  final String text;
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+      text,
+      style: const TextStyle(color: AppColors.error, fontSize: 12),
+    );
+  }
+}

lib/features/pets/pet_models.dart

@@ -0,0 +1,829 @@
+/// pets 域响应 / 请求模型（接口契约冻结稿 openapi.yaml v1.2.0，
+/// 字段名与后端逐字一致；枚举取值严格校验，未知值抛 [FormatException]
+/// 以便契约漂移在测试期暴露而非静默吞掉）。
+library;
+
+export 'package:patbond_flutter/core/models/cursor_page.dart';
+
+/// 物种（创建即定，不可修改）。
+enum PetSpecies {
+  dog,
+  cat,
+  other;
+
+  static PetSpecies fromJson(String value) =>
+      _enumFromJson(values, value, 'species');
+}
+
+/// 性别。
+enum PetSex {
+  male,
+  female,
+  unknown;
+
+  static PetSex fromJson(String value) => _enumFromJson(values, value, 'sex');
+}
+
+/// 宠物状态（deleted 为内部软删态，接口永不返回）。
+enum PetStatus {
+  active,
+  lost,
+  deceased,
+  archived;
+
+  static PetStatus fromJson(String value) =>
+      _enumFromJson(values, value, 'status');
+}
+
+/// 调用者对宠物的权限角色（客户端据此显隐写入口）。
+enum PetRole {
+  owner,
+  caregiver,
+  viewer;
+
+  static PetRole fromJson(String value) =>
+      _enumFromJson(values, value, 'myRole');
+}
+
+/// 体重记录来源。
+enum WeightSource {
+  manual,
+  clinic,
+  device;
+
+  static WeightSource fromJson(String value) =>
+      _enumFromJson(values, value, 'source');
+}
+
+/// 疫苗记录状态。
+enum VaccinationStatus {
+  scheduled,
+  completed,
+  cancelled;
+
+  static VaccinationStatus fromJson(String value) =>
+      _enumFromJson(values, value, 'status');
+}
+
+/// 健康事件六类类型。
+enum HealthEventType {
+  medical,
+  feeding,
+  deworming,
+  grooming,
+  measurement,
+  note;
+
+  static HealthEventType fromJson(String value) =>
+      _enumFromJson(values, value, 'eventType');
+}
+
+/// 照护提醒四类类型。
+enum CareReminderType {
+  deworming,
+  checkup,
+  medication,
+  other;
+
+  static CareReminderType fromJson(String value) =>
+      _enumFromJson(values, value, 'reminderType');
+}
+
+/// 照护提醒状态。
+enum CareReminderStatus {
+  pending,
+  completed,
+  dismissed;
+
+  static CareReminderStatus fromJson(String value) =>
+      _enumFromJson(values, value, 'status');
+}
+
+/// 摘要「下次接种」的取值来源。
+enum NextVaccinationSource {
+  planned,
+  nextDue;
+
+  static NextVaccinationSource fromJson(String value) =>
+      _enumFromJson(values, value, 'source');
+}
+
+T _enumFromJson<T extends Enum>(List<T> values, String raw, String field) {
+  for (final value in values) {
+    if (value.name == raw) return value;
+  }
+  throw FormatException('未知的 $field 取值：$raw');
+}
+
+/// 日期字段（契约 format: date）序列化为 YYYY-MM-DD。
+String dateToJson(DateTime date) {
+  final y = date.year.toString().padLeft(4, '0');
+  final m = date.month.toString().padLeft(2, '0');
+  final d = date.day.toString().padLeft(2, '0');
+  return '$y-$m-$d';
+}
+
+DateTime? _dateOrNull(Object? value) =>
+    value == null ? null : DateTime.parse(value as String);
+
+/// 宠物档案（列表 / 详情 / 创建 / 更新统一响应形态）。
+/// breedId 与 customBreedName 恰有其一非空；breedDisplayName 随 breedId 存在。
+class Pet {
+  const Pet({
+    required this.id,
+    required this.name,
+    required this.species,
+    required this.breedId,
+    required this.breedDisplayName,
+    required this.customBreedName,
+    required this.sex,
+    required this.birthDate,
+    required this.birthDateEstimated,
+    required this.personality,
+    required this.microchipNo,
+    required this.sterilizedOn,
+    required this.status,
+    required this.myRole,
+    required this.createdAt,
+    required this.updatedAt,
+    required this.version,
+  });
+
+  factory Pet.fromJson(Map<String, dynamic> json) {
+    return Pet(
+      id: json['id'] as String,
+      name: json['name'] as String,
+      species: PetSpecies.fromJson(json['species'] as String),
+      breedId: json['breedId'] as String?,
+      breedDisplayName: json['breedDisplayName'] as String?,
+      customBreedName: json['customBreedName'] as String?,
+      sex: PetSex.fromJson(json['sex'] as String),
+      birthDate: _dateOrNull(json['birthDate']),
+      birthDateEstimated: json['birthDateEstimated'] as bool,
+      personality: json['personality'] as String?,
+      microchipNo: json['microchipNo'] as String?,
+      sterilizedOn: _dateOrNull(json['sterilizedOn']),
+      status: PetStatus.fromJson(json['status'] as String),
+      myRole: PetRole.fromJson(json['myRole'] as String),
+      createdAt: DateTime.parse(json['createdAt'] as String),
+      updatedAt: DateTime.parse(json['updatedAt'] as String),
+      version: json['version'] as int,
+    );
+  }
+
+  final String id;
+  final String name;
+  final PetSpecies species;
+  final String? breedId;
+  final String? breedDisplayName;
+  final String? customBreedName;
+  final PetSex sex;
+  final DateTime? birthDate;
+  final bool birthDateEstimated;
+  final String? personality;
+  final String? microchipNo;
+  final DateTime? sterilizedOn;
+  final PetStatus status;
+  final PetRole myRole;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+  final int version;
+}
+
+/// 创建宠物请求。breedId 与 customBreedName 二选一且互斥（400/40000 兜底在服务端）。
+class CreatePetRequest {
+  const CreatePetRequest({
+    required this.name,
+    required this.species,
+    required this.sex,
+    this.breedId,
+    this.customBreedName,
+    this.birthDate,
+    this.birthDateEstimated,
+    this.personality,
+    this.microchipNo,
+    this.sterilizedOn,
+  });
+
+  final String name;
+  final PetSpecies species;
+  final PetSex sex;
+  final String? breedId;
+  final String? customBreedName;
+  final DateTime? birthDate;
+  final bool? birthDateEstimated;
+  final String? personality;
+  final String? microchipNo;
+  final DateTime? sterilizedOn;
+
+  Map<String, Object?> toJson() => {
+    'name': name,
+    'species': species.name,
+    'sex': sex.name,
+    if (breedId != null) 'breedId': breedId,
+    if (customBreedName != null) 'customBreedName': customBreedName,
+    if (birthDate != null) 'birthDate': dateToJson(birthDate!),
+    if (birthDateEstimated != null) 'birthDateEstimated': birthDateEstimated,
+    if (personality != null) 'personality': personality,
+    if (microchipNo != null) 'microchipNo': microchipNo,
+    if (sterilizedOn != null) 'sterilizedOn': dateToJson(sterilizedOn!),
+  };
+}
+
+/// 更新宠物请求（部分更新：缺席字段不变；不支持清空回 null；
+/// 品种对整体替换；species 不可改；version 乐观锁必填）。
+class UpdatePetRequest {
+  const UpdatePetRequest({
+    required this.version,
+    this.name,
+    this.breedId,
+    this.customBreedName,
+    this.sex,
+    this.birthDate,
+    this.birthDateEstimated,
+    this.personality,
+    this.microchipNo,
+    this.sterilizedOn,
+    this.status,
+  });
+
+  final int version;
+  final String? name;
+  final String? breedId;
+  final String? customBreedName;
+  final PetSex? sex;
+  final DateTime? birthDate;
+  final bool? birthDateEstimated;
+  final String? personality;
+  final String? microchipNo;
+  final DateTime? sterilizedOn;
+  final PetStatus? status;
+
+  Map<String, Object?> toJson() => {
+    'version': version,
+    if (name != null) 'name': name,
+    if (breedId != null) 'breedId': breedId,
+    if (customBreedName != null) 'customBreedName': customBreedName,
+    if (sex != null) 'sex': sex!.name,
+    if (birthDate != null) 'birthDate': dateToJson(birthDate!),
+    if (birthDateEstimated != null) 'birthDateEstimated': birthDateEstimated,
+    if (personality != null) 'personality': personality,
+    if (microchipNo != null) 'microchipNo': microchipNo,
+    if (sterilizedOn != null) 'sterilizedOn': dateToJson(sterilizedOn!),
+    if (status != null) 'status': status!.name,
+  };
+}
+
+/// 品种目录项（只读字典）。
+class Breed {
+  const Breed({
+    required this.id,
+    required this.species,
+    required this.code,
+    required this.displayName,
+  });
+
+  factory Breed.fromJson(Map<String, dynamic> json) {
+    return Breed(
+      id: json['id'] as String,
+      species: PetSpecies.fromJson(json['species'] as String),
+      code: json['code'] as String,
+      displayName: json['displayName'] as String,
+    );
+  }
+
+  final String id;
+  final PetSpecies species;
+  final String code;
+  final String displayName;
+}
+
+/// 体重记录（append-only，无乐观锁）。
+class WeightRecord {
+  const WeightRecord({
+    required this.id,
+    required this.petId,
+    required this.weightKg,
+    required this.measuredAt,
+    required this.source,
+    required this.note,
+    required this.createdAt,
+  });
+
+  factory WeightRecord.fromJson(Map<String, dynamic> json) {
+    return WeightRecord(
+      id: json['id'] as String,
+      petId: json['petId'] as String,
+      // 服务端 numeric(6,2)，整数值也可能以 int 下发。
+      weightKg: (json['weightKg'] as num).toDouble(),
+      measuredAt: DateTime.parse(json['measuredAt'] as String),
+      source: WeightSource.fromJson(json['source'] as String),
+      note: json['note'] as String?,
+      createdAt: DateTime.parse(json['createdAt'] as String),
+    );
+  }
+
+  final String id;
+  final String petId;
+  final double weightKg;
+  final DateTime measuredAt;
+  final WeightSource source;
+  final String? note;
+  final DateTime createdAt;
+}
+
+/// 添加体重记录请求。
+class CreateWeightRequest {
+  const CreateWeightRequest({
+    required this.weightKg,
+    required this.measuredAt,
+    this.source,
+    this.note,
+  });
+
+  final double weightKg;
+  final DateTime measuredAt;
+  final WeightSource? source;
+  final String? note;
+
+  Map<String, Object?> toJson() => {
+    'weightKg': weightKg,
+    'measuredAt': measuredAt.toIso8601String(),
+    if (source != null) 'source': source!.name,
+    if (note != null) 'note': note,
+  };
+}
+
+/// 疫苗目录项（只读字典）。
+class VaccineCatalogItem {
+  const VaccineCatalogItem({
+    required this.id,
+    required this.code,
+    required this.name,
+    required this.species,
+    required this.description,
+  });
+
+  factory VaccineCatalogItem.fromJson(Map<String, dynamic> json) {
+    return VaccineCatalogItem(
+      id: json['id'] as String,
+      code: json['code'] as String,
+      name: json['name'] as String,
+      species: PetSpecies.fromJson(json['species'] as String),
+      description: json['description'] as String?,
+    );
+  }
+
+  final String id;
+  final String code;
+  final String name;
+  final PetSpecies species;
+  final String? description;
+}
+
+/// 疫苗记录。vaccineName 由目录解出（列表页免二次查字典）。
+class Vaccination {
+  const Vaccination({
+    required this.id,
+    required this.petId,
+    required this.vaccineId,
+    required this.vaccineName,
+    required this.seriesKey,
+    required this.doseNo,
+    required this.doseLabel,
+    required this.status,
+    required this.plannedOn,
+    required this.administeredOn,
+    required this.nextDueOn,
+    required this.manufacturer,
+    required this.batchNo,
+    required this.notes,
+    required this.createdAt,
+    required this.updatedAt,
+    required this.version,
+  });
+
+  factory Vaccination.fromJson(Map<String, dynamic> json) {
+    return Vaccination(
+      id: json['id'] as String,
+      petId: json['petId'] as String,
+      vaccineId: json['vaccineId'] as String,
+      vaccineName: json['vaccineName'] as String,
+      seriesKey: json['seriesKey'] as String,
+      doseNo: json['doseNo'] as int,
+      doseLabel: json['doseLabel'] as String?,
+      status: VaccinationStatus.fromJson(json['status'] as String),
+      plannedOn: _dateOrNull(json['plannedOn']),
+      administeredOn: _dateOrNull(json['administeredOn']),
+      nextDueOn: _dateOrNull(json['nextDueOn']),
+      manufacturer: json['manufacturer'] as String?,
+      batchNo: json['batchNo'] as String?,
+      notes: json['notes'] as String?,
+      createdAt: DateTime.parse(json['createdAt'] as String),
+      updatedAt: DateTime.parse(json['updatedAt'] as String),
+      version: json['version'] as int,
+    );
+  }
+
+  final String id;
+  final String petId;
+  final String vaccineId;
+  final String vaccineName;
+  final String seriesKey;
+  final int doseNo;
+  final String? doseLabel;
+  final VaccinationStatus status;
+  final DateTime? plannedOn;
+  final DateTime? administeredOn;
+  final DateTime? nextDueOn;
+  final String? manufacturer;
+  final String? batchNo;
+  final String? notes;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+  final int version;
+}
+
+/// 创建疫苗记录请求（创建状态仅 scheduled / completed）。
+class CreateVaccinationRequest {
+  const CreateVaccinationRequest({
+    required this.vaccineId,
+    required this.seriesKey,
+    required this.doseNo,
+    required this.status,
+    this.doseLabel,
+    this.plannedOn,
+    this.administeredOn,
+    this.nextDueOn,
+    this.manufacturer,
+    this.batchNo,
+    this.notes,
+  });
+
+  final String vaccineId;
+  final String seriesKey;
+  final int doseNo;
+
+  /// 契约允许 scheduled / completed（cancelled 创建无业务意义，服务端 400）。
+  final VaccinationStatus status;
+  final String? doseLabel;
+  final DateTime? plannedOn;
+  final DateTime? administeredOn;
+  final DateTime? nextDueOn;
+  final String? manufacturer;
+  final String? batchNo;
+  final String? notes;
+
+  Map<String, Object?> toJson() => {
+    'vaccineId': vaccineId,
+    'seriesKey': seriesKey,
+    'doseNo': doseNo,
+    'status': status.name,
+    if (doseLabel != null) 'doseLabel': doseLabel,
+    if (plannedOn != null) 'plannedOn': dateToJson(plannedOn!),
+    if (administeredOn != null) 'administeredOn': dateToJson(administeredOn!),
+    if (nextDueOn != null) 'nextDueOn': dateToJson(nextDueOn!),
+    if (manufacturer != null) 'manufacturer': manufacturer,
+    if (batchNo != null) 'batchNo': batchNo,
+    if (notes != null) 'notes': notes,
+  };
+}
+
+/// 更新疫苗记录请求（vaccineId / seriesKey / doseNo 不可改；version 必填）。
+class UpdateVaccinationRequest {
+  const UpdateVaccinationRequest({
+    required this.version,
+    this.status,
+    this.plannedOn,
+    this.administeredOn,
+    this.nextDueOn,
+    this.doseLabel,
+    this.manufacturer,
+    this.batchNo,
+    this.notes,
+  });
+
+  final int version;
+  final VaccinationStatus? status;
+  final DateTime? plannedOn;
+  final DateTime? administeredOn;
+  final DateTime? nextDueOn;
+  final String? doseLabel;
+  final String? manufacturer;
+  final String? batchNo;
+  final String? notes;
+
+  Map<String, Object?> toJson() => {
+    'version': version,
+    if (status != null) 'status': status!.name,
+    if (plannedOn != null) 'plannedOn': dateToJson(plannedOn!),
+    if (administeredOn != null) 'administeredOn': dateToJson(administeredOn!),
+    if (nextDueOn != null) 'nextDueOn': dateToJson(nextDueOn!),
+    if (doseLabel != null) 'doseLabel': doseLabel,
+    if (manufacturer != null) 'manufacturer': manufacturer,
+    if (batchNo != null) 'batchNo': batchNo,
+    if (notes != null) 'notes': notes,
+  };
+}
+
+/// 健康事件（六类；金额整数分传输，元/分换算留给 UI 层）。
+class HealthEvent {
+  const HealthEvent({
+    required this.id,
+    required this.petId,
+    required this.eventType,
+    required this.occurredAt,
+    required this.title,
+    required this.notes,
+    required this.amountCents,
+    required this.createdByUserId,
+    required this.createdAt,
+    required this.updatedAt,
+    required this.version,
+  });
+
+  factory HealthEvent.fromJson(Map<String, dynamic> json) {
+    return HealthEvent(
+      id: json['id'] as String,
+      petId: json['petId'] as String,
+      eventType: HealthEventType.fromJson(json['eventType'] as String),
+      occurredAt: DateTime.parse(json['occurredAt'] as String),
+      title: json['title'] as String,
+      notes: json['notes'] as String?,
+      amountCents: json['amountCents'] as int?,
+      createdByUserId: json['createdByUserId'] as String,
+      createdAt: DateTime.parse(json['createdAt'] as String),
+      updatedAt: DateTime.parse(json['updatedAt'] as String),
+      version: json['version'] as int,
+    );
+  }
+
+  final String id;
+  final String petId;
+  final HealthEventType eventType;
+  final DateTime occurredAt;
+  final String title;
+  final String? notes;
+
+  /// 金额（整数分，非负，可空）。DTO 层保持整数分不换算。
+  final int? amountCents;
+  final String createdByUserId;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+  final int version;
+}
+
+/// 添加健康事件请求（createdByUserId 取自 token，不收请求体）。
+class CreateHealthEventRequest {
+  const CreateHealthEventRequest({
+    required this.eventType,
+    required this.occurredAt,
+    required this.title,
+    this.notes,
+    this.amountCents,
+  });
+
+  final HealthEventType eventType;
+  final DateTime occurredAt;
+  final String title;
+  final String? notes;
+
+  /// 整数分；提交小数服务端 400/40000（不做静默截断）。
+  final int? amountCents;
+
+  Map<String, Object?> toJson() => {
+    'eventType': eventType.name,
+    'occurredAt': occurredAt.toIso8601String(),
+    'title': title,
+    if (notes != null) 'notes': notes,
+    if (amountCents != null) 'amountCents': amountCents,
+  };
+}
+
+/// 更新健康事件请求（仅 title / notes / amountCents 可编辑；version 必填）。
+class UpdateHealthEventRequest {
+  const UpdateHealthEventRequest({
+    required this.version,
+    this.title,
+    this.notes,
+    this.amountCents,
+  });
+
+  final int version;
+  final String? title;
+  final String? notes;
+  final int? amountCents;
+
+  Map<String, Object?> toJson() => {
+    'version': version,
+    if (title != null) 'title': title,
+    if (notes != null) 'notes': notes,
+    if (amountCents != null) 'amountCents': amountCents,
+  };
+}
+
+/// 照护提醒（无 version 字段；completedAt 非空当且仅当 status=completed）。
+class CareReminder {
+  const CareReminder({
+    required this.id,
+    required this.petId,
+    required this.reminderType,
+    required this.title,
+    required this.dueAt,
+    required this.status,
+    required this.completedAt,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  factory CareReminder.fromJson(Map<String, dynamic> json) {
+    return CareReminder(
+      id: json['id'] as String,
+      petId: json['petId'] as String,
+      reminderType: CareReminderType.fromJson(json['reminderType'] as String),
+      title: json['title'] as String,
+      dueAt: DateTime.parse(json['dueAt'] as String),
+      status: CareReminderStatus.fromJson(json['status'] as String),
+      completedAt: json['completedAt'] == null
+          ? null
+          : DateTime.parse(json['completedAt'] as String),
+      createdAt: DateTime.parse(json['createdAt'] as String),
+      updatedAt: DateTime.parse(json['updatedAt'] as String),
+    );
+  }
+
+  final String id;
+  final String petId;
+  final CareReminderType reminderType;
+  final String title;
+  final DateTime dueAt;
+  final CareReminderStatus status;
+  final DateTime? completedAt;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+}
+
+/// 创建照护提醒请求（创建恒为 pending，不收 status）。
+class CreateCareReminderRequest {
+  const CreateCareReminderRequest({
+    required this.reminderType,
+    required this.title,
+    required this.dueAt,
+  });
+
+  final CareReminderType reminderType;
+  final String title;
+  final DateTime dueAt;
+
+  Map<String, Object?> toJson() => {
+    'reminderType': reminderType.name,
+    'title': title,
+    'dueAt': dueAt.toIso8601String(),
+  };
+}
+
+/// 更新提醒状态请求（状态流转专用：仅 status + completedAt）。
+class UpdateCareReminderRequest {
+  const UpdateCareReminderRequest({required this.status, this.completedAt});
+
+  final CareReminderStatus status;
+
+  /// status=completed 时必填；其余状态禁带（违反 422/42202）。
+  /// 由客户端提交（而非服务端 now()），允许补记实际完成时刻。
+  final DateTime? completedAt;
+
+  Map<String, Object?> toJson() => {
+    'status': status.name,
+    if (completedAt != null) 'completedAt': completedAt!.toIso8601String(),
+  };
+}
+
+/// 摘要：最新体重（无记录 → 整体 null）。
+class SummaryLatestWeight {
+  const SummaryLatestWeight({required this.weightKg, required this.measuredAt});
+
+  factory SummaryLatestWeight.fromJson(Map<String, dynamic> json) {
+    return SummaryLatestWeight(
+      weightKg: (json['weightKg'] as num).toDouble(),
+      measuredAt: DateTime.parse(json['measuredAt'] as String),
+    );
+  }
+
+  final double weightKg;
+  final DateTime measuredAt;
+}
+
+/// 摘要：疫苗进度（totalDoses=0 → 整体 null，不是 0/0）。
+class SummaryVaccinationProgress {
+  const SummaryVaccinationProgress({
+    required this.completedDoses,
+    required this.totalDoses,
+  });
+
+  factory SummaryVaccinationProgress.fromJson(Map<String, dynamic> json) {
+    return SummaryVaccinationProgress(
+      completedDoses: json['completedDoses'] as int,
+      totalDoses: json['totalDoses'] as int,
+    );
+  }
+
+  final int completedDoses;
+  final int totalDoses;
+}
+
+/// 摘要：下次接种（候选集空 → 整体 null；dueOn 可为过去日期——逾期针仍是下一针）。
+class SummaryNextVaccination {
+  const SummaryNextVaccination({
+    required this.vaccinationId,
+    required this.vaccineId,
+    required this.vaccineName,
+    required this.doseNo,
+    required this.doseLabel,
+    required this.dueOn,
+    required this.source,
+  });
+
+  factory SummaryNextVaccination.fromJson(Map<String, dynamic> json) {
+    return SummaryNextVaccination(
+      vaccinationId: json['vaccinationId'] as String,
+      vaccineId: json['vaccineId'] as String,
+      vaccineName: json['vaccineName'] as String,
+      doseNo: json['doseNo'] as int,
+      doseLabel: json['doseLabel'] as String?,
+      dueOn: DateTime.parse(json['dueOn'] as String),
+      source: NextVaccinationSource.fromJson(json['source'] as String),
+    );
+  }
+
+  final String vaccinationId;
+  final String vaccineId;
+  final String vaccineName;
+  final int doseNo;
+  final String? doseLabel;
+  final DateTime dueOn;
+  final NextVaccinationSource source;
+}
+
+/// 摘要：当月花费（恒非 null；无支出 amountCents=0；月边界随 tz 移动）。
+class SummaryMonthlyExpense {
+  const SummaryMonthlyExpense({
+    required this.month,
+    required this.timezone,
+    required this.amountCents,
+  });
+
+  factory SummaryMonthlyExpense.fromJson(Map<String, dynamic> json) {
+    return SummaryMonthlyExpense(
+      month: json['month'] as String,
+      timezone: json['timezone'] as String,
+      amountCents: json['amountCents'] as int,
+    );
+  }
+
+  /// ISO year-month（如 2026-09）。
+  final String month;
+  final String timezone;
+  final int amountCents;
+}
+
+/// 档案聚合摘要（四项聚合实时计算；前三项无记录时为 null，
+/// monthlyExpense 恒非 null——契约 PetSummary null 语义）。
+class PetSummary {
+  const PetSummary({
+    required this.petId,
+    required this.latestWeight,
+    required this.vaccinationProgress,
+    required this.nextVaccination,
+    required this.monthlyExpense,
+  });
+
+  factory PetSummary.fromJson(Map<String, dynamic> json) {
+    return PetSummary(
+      petId: json['petId'] as String,
+      latestWeight: json['latestWeight'] == null
+          ? null
+          : SummaryLatestWeight.fromJson(
+              json['latestWeight'] as Map<String, dynamic>,
+            ),
+      vaccinationProgress: json['vaccinationProgress'] == null
+          ? null
+          : SummaryVaccinationProgress.fromJson(
+              json['vaccinationProgress'] as Map<String, dynamic>,
+            ),
+      nextVaccination: json['nextVaccination'] == null
+          ? null
+          : SummaryNextVaccination.fromJson(
+              json['nextVaccination'] as Map<String, dynamic>,
+            ),
+      monthlyExpense: SummaryMonthlyExpense.fromJson(
+        json['monthlyExpense'] as Map<String, dynamic>,
+      ),
+    );
+  }
+
+  final String petId;
+  final SummaryLatestWeight? latestWeight;
+  final SummaryVaccinationProgress? vaccinationProgress;
+  final SummaryNextVaccination? nextVaccination;
+  final SummaryMonthlyExpense monthlyExpense;
+}

lib/features/pets/pets_controller.dart

@@ -0,0 +1,121 @@
+import 'package:flutter/foundation.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_repository.dart';
+
+/// 网络数据四态（第 9 节硬要求：loading / empty / error / retry，
+/// data 态含空列表判定，页面据 [PetsLoadPhase] + 数据渲染四态）。
+enum PetsLoadPhase { initial, loading, ready, error }
+
+/// pets feature 状态控制器（开发计划 §4.2 分层：
+/// Page/Widget → PetsController → PetsRepository → ApiClient）。
+///
+/// 宠物档案状态自此从 `AppState` 拆出：本 feature 不读写 AppState 的
+/// 宠物/疫苗 demo 数据；服务端是唯一事实来源，内存副本仅作展示缓存
+/// （无本地持久化——档案数据以 [refresh] 为失效/刷新策略）。
+///
+/// 本单只承载列表 + 详情主链路状态；体重/疫苗/事件/提醒的页面级
+/// 状态由 T2-12~14 按页面直接经 Repository 取数或扩展本控制器。
+class PetsController extends ChangeNotifier {
+  PetsController({required this._repository});
+
+  final PetsRepository _repository;
+
+  /// 记录级页面（体重/疫苗/事件/提醒）直接经仓库取数（22 号报告 §7
+  /// 交接约定：页面级状态按页自建，不膨胀本控制器）。
+  PetsRepository get repository => _repository;
+
+  PetsLoadPhase _phase = PetsLoadPhase.initial;
+  List<Pet> _pets = const [];
+  ApiException? _lastError;
+  bool _disposed = false;
+  final Map<PetSpecies, List<Breed>> _breedsCache = {};
+
+  PetsLoadPhase get phase => _phase;
+
+  /// 当前用户可见宠物（服务端 created_at DESC 排序原样保留）。
+  List<Pet> get pets => _pets;
+
+  /// ready 且列表为空 → 空态（新用户建档引导）。
+  bool get isEmpty => _phase == PetsLoadPhase.ready && _pets.isEmpty;
+
+  /// 最近一次加载失败的类型化错误（error 态时非 null）。
+  ApiException? get lastError => _lastError;
+
+  /// 加载 / 重试宠物列表。错误不外抛，收敛为 error 态供页面渲染 + retry。
+  Future<void> refresh() async {
+    _phase = PetsLoadPhase.loading;
+    _lastError = null;
+    _notify();
+    try {
+      _pets = await _repository.listPets();
+      _phase = PetsLoadPhase.ready;
+    } on ApiException catch (error) {
+      _lastError = error;
+      _phase = PetsLoadPhase.error;
+    }
+    _notify();
+  }
+
+  /// 创建宠物：成功后就地插入列表头（服务端 created_at DESC，新建最前），
+  /// 失败按类型化异常外抛给表单层处理（40903 芯片号冲突等）。
+  Future<Pet> createPet(CreatePetRequest request) async {
+    final pet = await _repository.createPet(request);
+    _pets = [pet, ..._pets];
+    if (_phase != PetsLoadPhase.ready) _phase = PetsLoadPhase.ready;
+    _notify();
+    return pet;
+  }
+
+  /// 拉取单只宠物详情并同步列表内存副本。
+  Future<Pet> getPet(String petId) async {
+    final pet = await _repository.getPet(petId);
+    _replaceInList(pet);
+    return pet;
+  }
+
+  /// 更新宠物档案：成功后同步列表副本；40902 版本冲突等外抛，
+  /// 页面提示后应调用 [getPet] 刷新取新 version 重提。
+  Future<Pet> updatePet(String petId, UpdatePetRequest request) async {
+    final pet = await _repository.updatePet(petId, request);
+    _replaceInList(pet);
+    return pet;
+  }
+
+  void _replaceInList(Pet pet) {
+    final index = _pets.indexWhere((item) => item.id == pet.id);
+    if (index == -1) return;
+    _pets = [..._pets]..[index] = pet;
+    _notify();
+  }
+
+  /// 品种目录（只读字典）：按物种缓存，会话内目录不变；
+  /// 失败按类型化异常外抛，供表单层内联重试。
+  Future<List<Breed>> loadBreeds(PetSpecies species) async {
+    final cached = _breedsCache[species];
+    if (cached != null) return cached;
+    final breeds = await _repository.listBreeds(species: species);
+    _breedsCache[species] = breeds;
+    return breeds;
+  }
+
+  /// 登出清空：回 initial 态并清缓存，避免上一账号档案跨会话泄漏；
+  /// 重新登录后主壳重建，列表页 initState 重新触发 [refresh]。
+  void reset() {
+    _phase = PetsLoadPhase.initial;
+    _pets = const [];
+    _lastError = null;
+    _breedsCache.clear();
+    _notify();
+  }
+
+  void _notify() {
+    if (!_disposed) notifyListeners();
+  }
+
+  @override
+  void dispose() {
+    _disposed = true;
+    super.dispose();
+  }
+}

lib/features/pets/pets_page.dart

@@ -0,0 +1,308 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/analytics/analytics_page_name.dart';
+import 'package:patbond_flutter/core/navigation/fade_route.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/empty_state_illustration.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/pet_avatar.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/pet_analytics.dart';
+import 'package:patbond_flutter/features/pets/pet_detail_page.dart';
+import 'package:patbond_flutter/features/pets/pet_display.dart';
+import 'package:patbond_flutter/features/pets/pet_form_page.dart';
+import 'package:patbond_flutter/features/pets/pets_controller.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+/// 档案 Tab 落地页：宠物列表（T2-12 / 05 号规范 §4.1 P1）。
+///
+/// 真实数据经 [PetsController] 四态驱动：loading（居中转圈）、
+/// empty（空态插画 + 建档 CTA）、error（横幅 + 重试）、ready（列表）。
+/// 页面不直连 ApiClient，不读写 AppState demo 数据。
+class PetsPage extends StatefulWidget {
+  const PetsPage({
+    required this.controller,
+    super.key,
+    this.analytics,
+    this.healthAnalytics,
+  });
+
+  final PetsController controller;
+  final PetAnalytics? analytics;
+
+  /// health_record 域埋点（T2-13，记录页面族透传）。
+  final HealthRecordAnalytics? healthAnalytics;
+
+  @override
+  State<PetsPage> createState() => _PetsPageState();
+}
+
+class _PetsPageState extends State<PetsPage> {
+  @override
+  void initState() {
+    super.initState();
+    // 主壳挂载即预取（IndexedStack 各 Tab 同时构建）；重登后控制器
+    // 已被 reset 回 initial，会重新拉取。
+    if (widget.controller.phase == PetsLoadPhase.initial) {
+      widget.controller.refresh();
+    }
+  }
+
+  Future<void> _openCreate(PetCreateEntryPoint entryPoint) async {
+    final created = await Navigator.of(context).push<Pet>(
+      fadePageRoute(
+        PetFormPage.create(
+          controller: widget.controller,
+          analytics: widget.analytics,
+          entryPoint: entryPoint,
+        ),
+        // 建宠表单曝光由既有 RouteObserver 采集（06 §1.6 pet_form）。
+        settings: RouteSettings(name: AnalyticsPageName.petForm.pageName),
+      ),
+    );
+    if (created != null && mounted) {
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text('已为「${created.name}」建立档案 🐾')));
+    }
+  }
+
+  void _openDetail(Pet pet) {
+    Navigator.of(context).push(
+      fadePageRoute(
+        PetDetailPage(
+          controller: widget.controller,
+          petId: pet.id,
+          analytics: widget.analytics,
+          healthAnalytics: widget.healthAnalytics,
+        ),
+        settings: RouteSettings(name: AnalyticsPageName.petDetail.pageName),
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ListenableBuilder(
+      listenable: widget.controller,
+      builder: (context, _) {
+        final controller = widget.controller;
+        switch (controller.phase) {
+          case PetsLoadPhase.initial:
+          case PetsLoadPhase.loading:
+            return const Center(child: CircularProgressIndicator());
+          case PetsLoadPhase.error:
+            return _LoadErrorView(
+              message: petLoadErrorMessage(controller.lastError),
+              onRetry: controller.refresh,
+            );
+          case PetsLoadPhase.ready:
+            if (controller.isEmpty) {
+              return Center(
+                child: SingleChildScrollView(
+                  child: EmptyStateIllustration(
+                    icon: Icons.pets,
+                    title: '还没有宠物档案',
+                    description: '添加毛孩子，开始记录 TA 的健康点滴',
+                    ctaLabel: '添加宠物',
+                    onCtaPressed: () =>
+                        _openCreate(PetCreateEntryPoint.profileEmptyState),
+                  ),
+                ),
+              );
+            }
+            return _petList(controller.pets);
+        }
+      },
+    );
+  }
+
+  Widget _petList(List<Pet> pets) {
+    return RefreshIndicator(
+      onRefresh: widget.controller.refresh,
+      child: ListView(
+        padding: const EdgeInsets.fromLTRB(16, 16, 16, 30),
+        children: [
+          Row(
+            children: [
+              Text('我的宠物', style: Theme.of(context).textTheme.titleLarge),
+              const Spacer(),
+              TextButton.icon(
+                onPressed: () => _openCreate(PetCreateEntryPoint.petList),
+                icon: const Icon(Icons.add, size: 18),
+                label: const Text('添加'),
+              ),
+            ],
+          ),
+          const SizedBox(height: 12),
+          for (final pet in pets) ...[
+            _PetCard(pet: pet, onTap: () => _openDetail(pet)),
+            const SizedBox(height: 10),
+          ],
+          _AddPetCard(onTap: () => _openCreate(PetCreateEntryPoint.petList)),
+        ],
+      ),
+    );
+  }
+}
+
+/// 加载失败态：InlineErrorBanner + 重试按钮（05 §4.2 错误三层模型）。
+class _LoadErrorView extends StatelessWidget {
+  const _LoadErrorView({required this.message, required this.onRetry});
+
+  final String message;
+  final Future<void> Function() onRetry;
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+      child: Padding(
+        padding: const EdgeInsets.all(24),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            InlineErrorBanner(message: message),
+            const SizedBox(height: 16),
+            FilledButton(onPressed: onRetry, child: const Text('重试')),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+/// 宠物卡（05 §4.1）：头像 lg + 名字 + 元信息 + chevron；非 active
+/// 状态以 TagPill 标示（图文双通道由状态文案承担）。
+class _PetCard extends StatelessWidget {
+  const _PetCard({required this.pet, required this.onTap});
+
+  final Pet pet;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(AppRadius.xl),
+        child: Padding(
+          padding: const EdgeInsets.all(14),
+          child: Row(
+            children: [
+              const PetAvatar(size: PetAvatarSize.lg),
+              const SizedBox(width: 12),
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(
+                      pet.name,
+                      style: Theme.of(context).textTheme.titleMedium,
+                    ),
+                    const SizedBox(height: 4),
+                    Text(
+                      petMetaLine(pet),
+                      style: const TextStyle(
+                        color: AppColors.inkSoft,
+                        fontSize: 12,
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+              if (pet.status != PetStatus.active)
+                TagPill(
+                  petStatusLabel(pet.status),
+                  color: pet.status == PetStatus.lost
+                      ? AppColors.error
+                      : AppColors.muted,
+                )
+              else
+                const Icon(Icons.chevron_right, color: AppColors.muted),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+/// 虚线「添加宠物」卡（05 §4.1：border 色 1.5px dashed，radius 24，高 64）。
+class _AddPetCard extends StatelessWidget {
+  const _AddPetCard({required this.onTap});
+
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    return CustomPaint(
+      painter: _DashedBorderPainter(
+        color: AppColors.border,
+        strokeWidth: 1.5,
+        radius: AppRadius.xl,
+      ),
+      child: SizedBox(
+        height: 64,
+        child: Material(
+          color: Colors.transparent,
+          child: InkWell(
+            onTap: onTap,
+            borderRadius: BorderRadius.circular(AppRadius.xl),
+            child: const Center(
+              child: Text(
+                '＋ 添加宠物',
+                style: TextStyle(
+                  color: AppColors.primaryStrong,
+                  fontSize: 14,
+                  fontWeight: FontWeight.w600,
+                ),
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _DashedBorderPainter extends CustomPainter {
+  const _DashedBorderPainter({
+    required this.color,
+    required this.strokeWidth,
+    required this.radius,
+  });
+
+  final Color color;
+  final double strokeWidth;
+  final double radius;
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    final paint = Paint()
+      ..color = color
+      ..strokeWidth = strokeWidth
+      ..style = PaintingStyle.stroke;
+    final path = Path()
+      ..addRRect(
+        RRect.fromRectAndRadius(Offset.zero & size, Radius.circular(radius)),
+      );
+    const dashWidth = 6.0;
+    const dashGap = 4.0;
+    for (final metric in path.computeMetrics()) {
+      var distance = 0.0;
+      while (distance < metric.length) {
+        canvas.drawPath(
+          metric.extractPath(distance, distance + dashWidth),
+          paint,
+        );
+        distance += dashWidth + dashGap;
+      }
+    }
+  }
+
+  @override
+  bool shouldRepaint(_DashedBorderPainter oldDelegate) =>
+      color != oldDelegate.color ||
+      strokeWidth != oldDelegate.strokeWidth ||
+      radius != oldDelegate.radius;
+}

lib/features/pets/pets_repository.dart

@@ -0,0 +1,312 @@
+import 'package:patbond_flutter/core/network/api_client.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:uuid/uuid.dart';
+
+/// pets 域仓库接口（契约 v1.2.0 的 12 路径 / 18 操作全覆盖；
+/// 页面依赖此抽象，widget 测试注入假实现）。
+abstract class PetsRepository {
+  // ---- 宠物 CRUD ----
+  Future<List<Pet>> listPets();
+  Future<Pet> createPet(CreatePetRequest request);
+  Future<Pet> getPet(String petId);
+  Future<Pet> updatePet(String petId, UpdatePetRequest request);
+
+  // ---- 字典 ----
+  Future<List<Breed>> listBreeds({PetSpecies? species});
+  Future<List<VaccineCatalogItem>> listVaccineCatalog({PetSpecies? species});
+
+  // ---- 体重（cursor 分页）----
+  Future<CursorPage<WeightRecord>> listWeights(
+    String petId, {
+    int? limit,
+    String? cursor,
+  });
+  Future<WeightRecord> createWeight(String petId, CreateWeightRequest request);
+
+  // ---- 疫苗 ----
+  Future<List<Vaccination>> listVaccinations(String petId);
+  Future<Vaccination> createVaccination(
+    String petId,
+    CreateVaccinationRequest request,
+  );
+  Future<Vaccination> updateVaccination(
+    String vaccinationId,
+    UpdateVaccinationRequest request,
+  );
+
+  // ---- 健康事件（cursor 分页）----
+  Future<CursorPage<HealthEvent>> listHealthEvents(
+    String petId, {
+    int? limit,
+    String? cursor,
+  });
+  Future<HealthEvent> createHealthEvent(
+    String petId,
+    CreateHealthEventRequest request,
+  );
+  Future<HealthEvent> updateHealthEvent(
+    String eventId,
+    UpdateHealthEventRequest request,
+  );
+
+  // ---- 照护提醒 ----
+  Future<List<CareReminder>> listCareReminders(
+    String petId, {
+    CareReminderStatus? status,
+  });
+  Future<CareReminder> createCareReminder(
+    String petId,
+    CreateCareReminderRequest request,
+  );
+  Future<CareReminder> updateCareReminder(
+    String reminderId,
+    UpdateCareReminderRequest request,
+  );
+
+  // ---- 聚合摘要 ----
+  Future<PetSummary> getPetSummary(String petId, {String? tz});
+}
+
+/// 基于 [ApiClient] 的实现。全部端点走 Bearer 鉴权（复用既有 token
+/// 拦截 + 401/40101 单飞刷新重放）；pets 域业务错误码升格为类型化异常。
+///
+/// 幂等：weights / vaccinations / health-events / care-reminders 四个 POST
+/// 按契约携带可选 `Idempotency-Key`（每次逻辑提交换新键；token 刷新后的
+/// 自动重放沿用同一个键，与 auth register 先例一致）。
+class ApiPetsRepository implements PetsRepository {
+  ApiPetsRepository({required this._api, this._uuid = const Uuid()});
+
+  final ApiClient _api;
+  final Uuid _uuid;
+
+  Future<Object?> _request(
+    String path, {
+    String method = 'GET',
+    Object? body,
+    Map<String, Object?>? query,
+    bool idempotent = false,
+  }) async {
+    try {
+      return await _api.request(
+        path,
+        method: method,
+        body: body,
+        query: query,
+        headers: idempotent ? {'Idempotency-Key': _uuid.v4()} : null,
+        requiresAuth: true,
+      );
+    } on ApiBusinessException catch (error) {
+      throw mapPetBusinessException(error);
+    }
+  }
+
+  Map<String, dynamic> _asMap(Object? data) => data! as Map<String, dynamic>;
+
+  List<T> _asList<T>(Object? data, T Function(Map<String, dynamic>) fromJson) {
+    return (data! as List)
+        .map((item) => fromJson(item as Map<String, dynamic>))
+        .toList();
+  }
+
+  @override
+  Future<List<Pet>> listPets() async {
+    final data = await _request('/api/v1/pets');
+    return _asList(data, Pet.fromJson);
+  }
+
+  @override
+  Future<Pet> createPet(CreatePetRequest request) async {
+    final data = await _request(
+      '/api/v1/pets',
+      method: 'POST',
+      body: request.toJson(),
+    );
+    return Pet.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<Pet> getPet(String petId) async {
+    final data = await _request('/api/v1/pets/$petId');
+    return Pet.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<Pet> updatePet(String petId, UpdatePetRequest request) async {
+    final data = await _request(
+      '/api/v1/pets/$petId',
+      method: 'PATCH',
+      body: request.toJson(),
+    );
+    return Pet.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<List<Breed>> listBreeds({PetSpecies? species}) async {
+    final data = await _request(
+      '/api/v1/breeds',
+      query: {if (species != null) 'species': species.name},
+    );
+    return _asList(data, Breed.fromJson);
+  }
+
+  @override
+  Future<List<VaccineCatalogItem>> listVaccineCatalog({
+    PetSpecies? species,
+  }) async {
+    final data = await _request(
+      '/api/v1/vaccine-catalog',
+      query: {if (species != null) 'species': species.name},
+    );
+    return _asList(data, VaccineCatalogItem.fromJson);
+  }
+
+  @override
+  Future<CursorPage<WeightRecord>> listWeights(
+    String petId, {
+    int? limit,
+    String? cursor,
+  }) async {
+    final data = await _request(
+      '/api/v1/pets/$petId/weights',
+      query: {'limit': ?limit, 'cursor': ?cursor},
+    );
+    return CursorPage.fromJson(_asMap(data), WeightRecord.fromJson);
+  }
+
+  @override
+  Future<WeightRecord> createWeight(
+    String petId,
+    CreateWeightRequest request,
+  ) async {
+    final data = await _request(
+      '/api/v1/pets/$petId/weights',
+      method: 'POST',
+      body: request.toJson(),
+      idempotent: true,
+    );
+    return WeightRecord.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<List<Vaccination>> listVaccinations(String petId) async {
+    final data = await _request('/api/v1/pets/$petId/vaccinations');
+    return _asList(data, Vaccination.fromJson);
+  }
+
+  @override
+  Future<Vaccination> createVaccination(
+    String petId,
+    CreateVaccinationRequest request,
+  ) async {
+    final data = await _request(
+      '/api/v1/pets/$petId/vaccinations',
+      method: 'POST',
+      body: request.toJson(),
+      idempotent: true,
+    );
+    return Vaccination.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<Vaccination> updateVaccination(
+    String vaccinationId,
+    UpdateVaccinationRequest request,
+  ) async {
+    final data = await _request(
+      '/api/v1/vaccinations/$vaccinationId',
+      method: 'PATCH',
+      body: request.toJson(),
+    );
+    return Vaccination.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<CursorPage<HealthEvent>> listHealthEvents(
+    String petId, {
+    int? limit,
+    String? cursor,
+  }) async {
+    final data = await _request(
+      '/api/v1/pets/$petId/health-events',
+      query: {'limit': ?limit, 'cursor': ?cursor},
+    );
+    return CursorPage.fromJson(_asMap(data), HealthEvent.fromJson);
+  }
+
+  @override
+  Future<HealthEvent> createHealthEvent(
+    String petId,
+    CreateHealthEventRequest request,
+  ) async {
+    final data = await _request(
+      '/api/v1/pets/$petId/health-events',
+      method: 'POST',
+      body: request.toJson(),
+      idempotent: true,
+    );
+    return HealthEvent.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<HealthEvent> updateHealthEvent(
+    String eventId,
+    UpdateHealthEventRequest request,
+  ) async {
+    final data = await _request(
+      '/api/v1/health-events/$eventId',
+      method: 'PATCH',
+      body: request.toJson(),
+    );
+    return HealthEvent.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<List<CareReminder>> listCareReminders(
+    String petId, {
+    CareReminderStatus? status,
+  }) async {
+    final data = await _request(
+      '/api/v1/pets/$petId/care-reminders',
+      query: {if (status != null) 'status': status.name},
+    );
+    return _asList(data, CareReminder.fromJson);
+  }
+
+  @override
+  Future<CareReminder> createCareReminder(
+    String petId,
+    CreateCareReminderRequest request,
+  ) async {
+    final data = await _request(
+      '/api/v1/pets/$petId/care-reminders',
+      method: 'POST',
+      body: request.toJson(),
+      idempotent: true,
+    );
+    return CareReminder.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<CareReminder> updateCareReminder(
+    String reminderId,
+    UpdateCareReminderRequest request,
+  ) async {
+    final data = await _request(
+      '/api/v1/care-reminders/$reminderId',
+      method: 'PATCH',
+      body: request.toJson(),
+    );
+    return CareReminder.fromJson(_asMap(data));
+  }
+
+  @override
+  Future<PetSummary> getPetSummary(String petId, {String? tz}) async {
+    final data = await _request(
+      '/api/v1/pets/$petId/summary',
+      query: {'tz': ?tz},
+    );
+    return PetSummary.fromJson(_asMap(data));
+  }
+}

lib/features/pets/vaccination_form_page.dart

@@ -0,0 +1,526 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/semantics.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/app_text_field.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/primary_button.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/health_record_display.dart';
+import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_repository.dart';
+
+/// 疫苗登记表单页（T2-13）。
+///
+/// - 目录：vaccine-catalog 按宠物物种过滤（契约：疫苗 species 须与宠物
+///   一致），目录网络面自带 loading / 失败重试 / 空目录提示。
+/// - 系列/剂次：seriesKey 选中疫苗后以目录 code 自动预填（可改）；
+///   doseNo 默认 1。
+/// - 状态机：创建仅 scheduled / completed；状态-日期规则由
+///   [vaccinationDateRuleError] 前端拦截（scheduled 态不渲染接种日期字段，
+///   结构上杜绝「scheduled 带 administeredOn」），后端 42201 兜底提示；
+///   同系列同剂次重复登记 40904 兜底提示。
+/// - 埋点：health_record_create_started/succeeded/failed（recordType=vaccine）。
+class VaccinationFormPage extends StatefulWidget {
+  const VaccinationFormPage({
+    required this.repository,
+    required this.petId,
+    required this.petSpecies,
+    super.key,
+    this.analytics,
+    this.entryPoint = HealthRecordEntryPoint.recordList,
+  });
+
+  final PetsRepository repository;
+  final String petId;
+  final PetSpecies petSpecies;
+  final HealthRecordAnalytics? analytics;
+  final HealthRecordEntryPoint entryPoint;
+
+  @override
+  State<VaccinationFormPage> createState() => _VaccinationFormPageState();
+}
+
+class _VaccinationFormPageState extends State<VaccinationFormPage> {
+  final _seriesCtrl = TextEditingController();
+  final _doseNoCtrl = TextEditingController(text: '1');
+  final _doseLabelCtrl = TextEditingController();
+  final _notesCtrl = TextEditingController();
+
+  List<VaccineCatalogItem>? _catalog;
+  bool _catalogLoading = false;
+  bool _catalogFailed = false;
+  String? _vaccineId;
+
+  /// seriesKey 是否仍处于「目录 code 自动预填」状态（用户一改即失效）。
+  bool _seriesAutoFilled = true;
+
+  VaccinationStatus _status = VaccinationStatus.scheduled;
+  DateTime? _plannedOn;
+  DateTime? _administeredOn;
+  DateTime? _nextDueOn;
+
+  String? _vaccineError;
+  String? _seriesError;
+  String? _doseNoError;
+  String? _dateError;
+  String? _formError;
+  bool _submitting = false;
+
+  bool _startedFired = false;
+  int _attemptSeq = 0;
+  late final DateTime _openedAt;
+
+  @override
+  void initState() {
+    super.initState();
+    _openedAt = DateTime.now();
+    _loadCatalog();
+  }
+
+  @override
+  void dispose() {
+    _seriesCtrl.dispose();
+    _doseNoCtrl.dispose();
+    _doseLabelCtrl.dispose();
+    _notesCtrl.dispose();
+    super.dispose();
+  }
+
+  Future<void> _loadCatalog() async {
+    setState(() {
+      _catalogLoading = true;
+      _catalogFailed = false;
+    });
+    try {
+      final catalog = await widget.repository.listVaccineCatalog(
+        species: widget.petSpecies,
+      );
+      if (!mounted) return;
+      setState(() {
+        _catalog = catalog;
+        _catalogLoading = false;
+      });
+    } on ApiException {
+      if (!mounted) return;
+      setState(() {
+        _catalogLoading = false;
+        _catalogFailed = true;
+      });
+    }
+  }
+
+  void _markStarted() {
+    if (_startedFired) return;
+    _startedFired = true;
+    widget.analytics?.createStarted(
+      recordType: HealthRecordType.vaccine,
+      entryPoint: widget.entryPoint,
+    );
+  }
+
+  void _trackFailed(HealthRecordFailureReason reason, [int? errorCode]) {
+    widget.analytics?.createFailed(
+      recordType: HealthRecordType.vaccine,
+      reason: reason,
+      attemptSeq: _attemptSeq,
+      errorCode: errorCode,
+    );
+  }
+
+  int? get _doseNo {
+    final value = int.tryParse(_doseNoCtrl.text.trim());
+    if (value == null || value < 1 || value > 32767) return null;
+    return value;
+  }
+
+  void _showFormError(String message) {
+    setState(() => _formError = message);
+    SemanticsService.sendAnnouncement(
+      View.of(context),
+      message,
+      TextDirection.ltr,
+    );
+  }
+
+  Future<void> _submit() async {
+    if (_submitting) return;
+    _attemptSeq++;
+    final vaccineError = _vaccineId == null ? '请选择疫苗' : null;
+    final seriesError = _seriesCtrl.text.trim().isEmpty ? '请输入系列名称' : null;
+    final doseNoError = _doseNo == null ? '剂次需为 1~32767 的整数' : null;
+    final dateError = vaccinationDateRuleError(
+      status: _status,
+      plannedOn: _plannedOn,
+      administeredOn: _administeredOn,
+      nextDueOn: _nextDueOn,
+    );
+    if (vaccineError != null ||
+        seriesError != null ||
+        doseNoError != null ||
+        dateError != null) {
+      setState(() {
+        _vaccineError = vaccineError;
+        _seriesError = seriesError;
+        _doseNoError = doseNoError;
+        _dateError = dateError;
+      });
+      _trackFailed(HealthRecordFailureReason.validationError);
+      return;
+    }
+
+    setState(() {
+      _submitting = true;
+      _formError = null;
+    });
+    try {
+      final scheduled = _status == VaccinationStatus.scheduled;
+      final doseLabel = _doseLabelCtrl.text.trim();
+      final notes = _notesCtrl.text.trim();
+      final record = await widget.repository.createVaccination(
+        widget.petId,
+        CreateVaccinationRequest(
+          vaccineId: _vaccineId!,
+          seriesKey: _seriesCtrl.text.trim(),
+          doseNo: _doseNo!,
+          status: _status,
+          // 状态-日期规则结构化落地：scheduled 只发 plannedOn，
+          // completed 只发 administeredOn（+可选 nextDueOn）。
+          plannedOn: scheduled ? _plannedOn : null,
+          administeredOn: scheduled ? null : _administeredOn,
+          nextDueOn: scheduled ? null : _nextDueOn,
+          doseLabel: doseLabel.isEmpty ? null : doseLabel,
+          notes: notes.isEmpty ? null : notes,
+        ),
+      );
+      widget.analytics?.createSucceeded(
+        recordType: HealthRecordType.vaccine,
+        durationMs: DateTime.now().difference(_openedAt).inMilliseconds,
+      );
+      if (mounted) Navigator.of(context).pop(record);
+    } on VaccinationDoseExistsException {
+      if (!mounted) return;
+      _showFormError('该系列该剂次已有记录（40904）；如登记有误，可取消原记录后重新登记');
+      _trackFailed(HealthRecordFailureReason.validationError, 40904);
+    } on VaccinationRuleException {
+      if (!mounted) return;
+      // 前端已拦截主路径，此处为后端状态-日期规则兜底（42201）。
+      _showFormError('接种状态与日期不符合规则，请核对后重试');
+      _trackFailed(HealthRecordFailureReason.validationError, 42201);
+    } on PetAccessDeniedException {
+      if (!mounted) return;
+      _showFormError('你没有权限为该宠物登记疫苗');
+      _trackFailed(HealthRecordFailureReason.permissionDenied, 40300);
+    } on PetNotFoundException {
+      if (!mounted) return;
+      final navigator = Navigator.of(context);
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('宠物不存在或已被删除')));
+      _trackFailed(HealthRecordFailureReason.notFound, 40401);
+      navigator.pop();
+    } on ApiRateLimitException {
+      if (!mounted) return;
+      _showFormError('操作过于频繁，请稍后再试');
+      _trackFailed(HealthRecordFailureReason.rateLimited);
+    } on ApiBusinessException catch (error) {
+      if (!mounted) return;
+      final isParam = error.code == ApiCodes.paramError;
+      _showFormError(isParam ? '请检查填写内容后重试' : '保存失败，请稍后重试');
+      _trackFailed(
+        isParam
+            ? HealthRecordFailureReason.validationError
+            : HealthRecordFailureReason.serverError,
+        error.code,
+      );
+    } on ApiNetworkException {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: const Text('网络异常，请检查网络后重试'),
+          action: SnackBarAction(label: '重试', onPressed: _submit),
+        ),
+      );
+      _trackFailed(HealthRecordFailureReason.networkError);
+    } on SessionExpiredException {
+      // 会话失效：认证状态机自动回登录页。
+    } finally {
+      if (mounted) setState(() => _submitting = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        foregroundColor: AppColors.ink,
+        title: const Text('登记疫苗'),
+        centerTitle: true,
+        titleTextStyle: const TextStyle(
+          color: AppColors.ink,
+          fontSize: 16,
+          fontWeight: FontWeight.w800,
+        ),
+      ),
+      body: SafeArea(
+        child: ListView(
+          padding: const EdgeInsets.fromLTRB(20, 8, 20, 30),
+          children: [
+            ..._catalogSection(),
+            const SizedBox(height: 14),
+            AppTextField(
+              label: '系列名称',
+              controller: _seriesCtrl,
+              prefixIcon: Icons.tag_outlined,
+              errorText: _seriesError,
+              helperText: '区分初免/加强等系列，同系列同剂次唯一',
+              enabled: !_submitting,
+              textInputAction: TextInputAction.next,
+              onChanged: (_) {
+                _markStarted();
+                _seriesAutoFilled = false;
+                if (_seriesError != null || _formError != null) {
+                  setState(() {
+                    _seriesError = null;
+                    _formError = null;
+                  });
+                }
+              },
+            ),
+            const SizedBox(height: 14),
+            Row(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Expanded(
+                  child: AppTextField(
+                    label: '剂次',
+                    controller: _doseNoCtrl,
+                    prefixIcon: Icons.numbers_outlined,
+                    errorText: _doseNoError,
+                    enabled: !_submitting,
+                    keyboardType: TextInputType.number,
+                    textInputAction: TextInputAction.next,
+                    onChanged: (_) {
+                      _markStarted();
+                      if (_doseNoError != null || _formError != null) {
+                        setState(() {
+                          _doseNoError = null;
+                          _formError = null;
+                        });
+                      }
+                    },
+                  ),
+                ),
+                const SizedBox(width: 12),
+                Expanded(
+                  child: AppTextField(
+                    label: '剂次标签（可选）',
+                    controller: _doseLabelCtrl,
+                    enabled: !_submitting,
+                    textInputAction: TextInputAction.next,
+                    onChanged: (_) => _markStarted(),
+                  ),
+                ),
+              ],
+            ),
+            const SizedBox(height: 18),
+            const Text(
+              '接种状态',
+              style: TextStyle(
+                color: AppColors.inkSoft,
+                fontSize: 13,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+            const SizedBox(height: 8),
+            SegmentedButton<VaccinationStatus>(
+              segments: const [
+                ButtonSegment(
+                  value: VaccinationStatus.scheduled,
+                  icon: Icon(Icons.event_outlined),
+                  label: Text('计划接种'),
+                ),
+                ButtonSegment(
+                  value: VaccinationStatus.completed,
+                  icon: Icon(Icons.check_circle_outline),
+                  label: Text('已完成'),
+                ),
+              ],
+              selected: {_status},
+              onSelectionChanged: _submitting
+                  ? null
+                  : (value) {
+                      _markStarted();
+                      setState(() {
+                        _status = value.first;
+                        _dateError = null;
+                        _formError = null;
+                      });
+                    },
+            ),
+            const SizedBox(height: 14),
+            if (_status == VaccinationStatus.scheduled)
+              _dateTile(
+                label: '计划接种日期',
+                value: _plannedOn,
+                allowFuture: true,
+                onPicked: (value) => setState(() {
+                  _plannedOn = value;
+                  _dateError = null;
+                }),
+              )
+            else ...[
+              _dateTile(
+                label: '接种日期',
+                value: _administeredOn,
+                allowFuture: false,
+                onPicked: (value) => setState(() {
+                  _administeredOn = value;
+                  _dateError = null;
+                }),
+              ),
+              const SizedBox(height: 12),
+              _dateTile(
+                label: '下次接种日期（可选）',
+                value: _nextDueOn,
+                allowFuture: true,
+                onPicked: (value) => setState(() {
+                  _nextDueOn = value;
+                  _dateError = null;
+                }),
+              ),
+            ],
+            if (_dateError != null) ...[
+              const SizedBox(height: 6),
+              Text(
+                _dateError!,
+                style: const TextStyle(color: AppColors.error, fontSize: 12),
+              ),
+            ],
+            const SizedBox(height: 14),
+            AppTextField(
+              label: '备注（可选）',
+              controller: _notesCtrl,
+              prefixIcon: Icons.sticky_note_2_outlined,
+              enabled: !_submitting,
+              textInputAction: TextInputAction.done,
+              onChanged: (_) => _markStarted(),
+            ),
+            if (_formError != null) ...[
+              const SizedBox(height: 16),
+              InlineErrorBanner(message: _formError!),
+            ],
+            const SizedBox(height: 24),
+            PrimaryButton(
+              label: '保存登记',
+              isLoading: _submitting,
+              onPressed: _submit,
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  List<Widget> _catalogSection() {
+    if (_catalogLoading) {
+      return const [
+        SizedBox(
+          height: 52,
+          child: Center(child: CircularProgressIndicator(strokeWidth: 2)),
+        ),
+      ];
+    }
+    if (_catalogFailed) {
+      return [
+        Row(
+          children: [
+            const Expanded(
+              child: Text(
+                '疫苗目录加载失败，请重试后选择',
+                style: TextStyle(color: AppColors.error, fontSize: 12),
+              ),
+            ),
+            TextButton(onPressed: _loadCatalog, child: const Text('重试')),
+          ],
+        ),
+      ];
+    }
+    final catalog = _catalog ?? const <VaccineCatalogItem>[];
+    if (catalog.isEmpty) {
+      return const [
+        Text(
+          '该物种暂无可选疫苗目录',
+          style: TextStyle(color: AppColors.inkSoft, fontSize: 12),
+        ),
+      ];
+    }
+    return [
+      DropdownButtonFormField<String>(
+        initialValue: _vaccineId,
+        decoration: InputDecoration(labelText: '疫苗', errorText: _vaccineError),
+        items: [
+          for (final item in catalog)
+            DropdownMenuItem(value: item.id, child: Text(item.name)),
+        ],
+        onChanged: _submitting
+            ? null
+            : (value) {
+                _markStarted();
+                setState(() {
+                  _vaccineId = value;
+                  _vaccineError = null;
+                  _formError = null;
+                  // seriesKey 以目录 code 预填（用户未改过才覆盖）。
+                  if (_seriesAutoFilled && value != null) {
+                    final item = catalog.firstWhere((c) => c.id == value);
+                    _seriesCtrl.text = item.code;
+                  }
+                });
+              },
+      ),
+    ];
+  }
+
+  Widget _dateTile({
+    required String label,
+    required DateTime? value,
+    required bool allowFuture,
+    required ValueChanged<DateTime> onPicked,
+  }) {
+    return ListTile(
+      shape: RoundedRectangleBorder(
+        side: const BorderSide(color: AppColors.border),
+        borderRadius: BorderRadius.circular(AppRadius.lg),
+      ),
+      tileColor: AppColors.surface,
+      leading: const Icon(Icons.event_outlined, color: AppColors.muted),
+      title: Text(label, style: const TextStyle(fontSize: 14)),
+      subtitle: Text(
+        value == null ? '未选择' : dateToJson(value),
+        style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
+      ),
+      trailing: const Icon(
+        Icons.calendar_month_outlined,
+        color: AppColors.muted,
+      ),
+      enabled: !_submitting,
+      onTap: () async {
+        final now = DateTime.now();
+        final picked = await showDatePicker(
+          context: context,
+          initialDate: value ?? now,
+          firstDate: DateTime(1990),
+          lastDate: allowFuture ? DateTime(now.year + 5) : now,
+        );
+        if (picked != null && mounted) {
+          _markStarted();
+          onPicked(picked);
+        }
+      },
+    );
+  }
+}

lib/features/pets/vaccination_records_page.dart

@@ -0,0 +1,594 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/analytics/analytics_page_name.dart';
+import 'package:patbond_flutter/core/navigation/fade_route.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/app_text_field.dart';
+import 'package:patbond_flutter/core/widgets/empty_state_illustration.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/record_type_dot.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/health_record_display.dart';
+import 'package:patbond_flutter/features/pets/pet_display.dart';
+import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_repository.dart';
+import 'package:patbond_flutter/features/pets/vaccination_form_page.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+enum _ListPhase { loading, ready, error }
+
+/// 疫苗记录列表页（T2-13）：契约不分页，服务端按
+/// `series_key, dose_no, created_at, id` 排序，客户端按系列直接分组；
+/// 含 cancelled 行原样展示（取消后同剂次可重新登记的事实留痕）。
+/// 四态齐备；登记经 [VaccinationFormPage]。
+///
+/// T2-14 收尾（25 号报告 §7 遗留①②）：scheduled 行支持「标记完成 /
+/// 取消登记」PATCH 流转；完成时可补录厂商/批号（契约可选字段）；
+/// 挂 `health_record_edit_succeeded/failed`（recordType=vaccine）。
+///
+/// 曝光埋点：每次进入首个成功加载上报一次
+/// `health_record_viewed(recordType=vaccine, source=pet_detail)`。
+class VaccinationRecordsPage extends StatefulWidget {
+  const VaccinationRecordsPage({
+    required this.repository,
+    required this.petId,
+    required this.petSpecies,
+    required this.canWrite,
+    super.key,
+    this.analytics,
+  });
+
+  final PetsRepository repository;
+  final String petId;
+
+  /// 疫苗目录按宠物物种过滤（契约：疫苗 species 须与宠物一致）。
+  final PetSpecies petSpecies;
+
+  /// owner/caregiver 可写；viewer 隐藏登记入口。
+  final bool canWrite;
+
+  final HealthRecordAnalytics? analytics;
+
+  @override
+  State<VaccinationRecordsPage> createState() => _VaccinationRecordsPageState();
+}
+
+class _VaccinationRecordsPageState extends State<VaccinationRecordsPage> {
+  _ListPhase _phase = _ListPhase.loading;
+  List<Vaccination> _records = const [];
+  ApiException? _error;
+  bool _viewedFired = false;
+  bool _mutating = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _load();
+  }
+
+  Future<void> _load() async {
+    setState(() {
+      _phase = _ListPhase.loading;
+      _error = null;
+    });
+    try {
+      final records = await widget.repository.listVaccinations(widget.petId);
+      if (!mounted) return;
+      setState(() {
+        _records = records;
+        _phase = _ListPhase.ready;
+      });
+      if (!_viewedFired) {
+        _viewedFired = true;
+        widget.analytics?.viewed(
+          recordType: HealthRecordType.vaccine,
+          source: HealthRecordViewSource.petDetail,
+        );
+      }
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      setState(() {
+        _error = error;
+        _phase = _ListPhase.error;
+      });
+    }
+  }
+
+  Future<void> _openCreate() async {
+    final created = await Navigator.of(context).push<Vaccination>(
+      fadePageRoute(
+        VaccinationFormPage(
+          repository: widget.repository,
+          petId: widget.petId,
+          petSpecies: widget.petSpecies,
+          analytics: widget.analytics,
+        ),
+        settings: RouteSettings(name: AnalyticsPageName.recordForm.pageName),
+      ),
+    );
+    if (created != null && mounted) {
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('已登记疫苗')));
+      // 排序键在服务端（series_key, dose_no），重新拉取而非本地猜位置。
+      await _load();
+    }
+  }
+
+  void _trackEditFailed(HealthRecordFailureReason reason, [int? errorCode]) {
+    widget.analytics?.editFailed(
+      recordType: HealthRecordType.vaccine,
+      reason: reason,
+      errorCode: errorCode,
+    );
+  }
+
+  /// 标记完成（25 号报告遗留①②）：接种日期必填、下次接种/厂商/批号可选
+  /// （厂商/批号为契约可选字段的补录入口）。
+  Future<void> _markCompleted(Vaccination record) async {
+    final result = await showDialog<_CompleteVaccinationResult>(
+      context: context,
+      builder: (context) => _CompleteVaccinationDialog(record: record),
+    );
+    if (result == null || !mounted) return;
+    await _mutate(
+      record,
+      UpdateVaccinationRequest(
+        version: record.version,
+        status: VaccinationStatus.completed,
+        administeredOn: result.administeredOn,
+        nextDueOn: result.nextDueOn,
+        manufacturer: result.manufacturer,
+        batchNo: result.batchNo,
+      ),
+      successText: '已标记完成',
+    );
+  }
+
+  Future<void> _cancelRegistration(Vaccination record) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('取消这条登记？'),
+        content: Text(
+          '「${vaccinationDoseLabel(record)}」将标记为已取消；'
+          '取消后同系列同剂次可重新登记。',
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(false),
+            child: const Text('返回'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.of(context).pop(true),
+            child: const Text('取消登记'),
+          ),
+        ],
+      ),
+    );
+    if (confirmed != true || !mounted) return;
+    await _mutate(
+      record,
+      UpdateVaccinationRequest(
+        version: record.version,
+        status: VaccinationStatus.cancelled,
+      ),
+      successText: '已取消登记',
+    );
+  }
+
+  Future<void> _mutate(
+    Vaccination record,
+    UpdateVaccinationRequest request, {
+    required String successText,
+  }) async {
+    if (_mutating) return;
+    setState(() => _mutating = true);
+    final messenger = ScaffoldMessenger.of(context);
+    try {
+      await widget.repository.updateVaccination(record.id, request);
+      widget.analytics?.editSucceeded(
+        recordType: HealthRecordType.vaccine,
+        fieldCount: request.toJson().length - 1,
+      );
+      if (!mounted) return;
+      messenger.showSnackBar(SnackBar(content: Text(successText)));
+      await _load();
+    } on PetVersionConflictException {
+      if (!mounted) return;
+      // 40902：并发修改抢先——刷新取新 version 后由用户重试动作。
+      messenger.showSnackBar(
+        const SnackBar(content: Text('记录已在其他设备被修改，已刷新，请重试')),
+      );
+      _trackEditFailed(HealthRecordFailureReason.conflict, 40902);
+      await _load();
+    } on VaccinationRuleException {
+      if (!mounted) return;
+      // 42201：状态机/状态-日期规则兜底（前端已按规则拦截主路径）。
+      messenger.showSnackBar(
+        const SnackBar(content: Text('接种状态与日期不符合规则，请核对后重试')),
+      );
+      _trackEditFailed(HealthRecordFailureReason.validationError, 42201);
+    } on PetRecordNotFoundException {
+      if (!mounted) return;
+      messenger.showSnackBar(const SnackBar(content: Text('记录不存在或已被删除，已刷新')));
+      _trackEditFailed(HealthRecordFailureReason.notFound, 40402);
+      await _load();
+    } on PetAccessDeniedException {
+      if (!mounted) return;
+      messenger.showSnackBar(const SnackBar(content: Text('你没有权限操作该记录')));
+      _trackEditFailed(HealthRecordFailureReason.permissionDenied, 40300);
+    } on ApiBusinessException catch (error) {
+      if (!mounted) return;
+      messenger.showSnackBar(const SnackBar(content: Text('操作失败，请稍后重试')));
+      _trackEditFailed(HealthRecordFailureReason.serverError, error.code);
+    } on ApiNetworkException {
+      if (!mounted) return;
+      messenger.showSnackBar(const SnackBar(content: Text('网络异常，请检查网络后重试')));
+      _trackEditFailed(HealthRecordFailureReason.networkError);
+    } on SessionExpiredException {
+      // 会话失效：认证状态机自动回登录页。
+    } finally {
+      if (mounted) setState(() => _mutating = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        foregroundColor: AppColors.ink,
+        title: const Text('疫苗记录'),
+        centerTitle: true,
+        titleTextStyle: const TextStyle(
+          color: AppColors.ink,
+          fontSize: 16,
+          fontWeight: FontWeight.w800,
+        ),
+        actions: [
+          if (widget.canWrite && _phase == _ListPhase.ready)
+            IconButton(
+              tooltip: '登记疫苗',
+              onPressed: _openCreate,
+              icon: const Icon(Icons.add),
+            ),
+        ],
+      ),
+      body: switch (_phase) {
+        _ListPhase.loading => const Center(child: CircularProgressIndicator()),
+        _ListPhase.error => Center(
+          child: Padding(
+            padding: const EdgeInsets.all(24),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                InlineErrorBanner(message: petLoadErrorMessage(_error)),
+                const SizedBox(height: 16),
+                FilledButton(onPressed: _load, child: const Text('重试')),
+              ],
+            ),
+          ),
+        ),
+        _ListPhase.ready when _records.isEmpty => Center(
+          child: SingleChildScrollView(
+            child: EmptyStateIllustration(
+              icon: Icons.vaccines_outlined,
+              title: '还没有疫苗记录',
+              description: '登记接种计划与完成情况，不错过每一针',
+              ctaLabel: widget.canWrite ? '登记第一针' : null,
+              onCtaPressed: widget.canWrite ? _openCreate : null,
+            ),
+          ),
+        ),
+        _ListPhase.ready => _list(),
+      },
+    );
+  }
+
+  /// 按系列分组渲染：服务端排序保证同系列相邻，系列变化处插组头
+  /// （疫苗名 · 系列键）。
+  Widget _list() {
+    final children = <Widget>[];
+    String? currentSeries;
+    for (final record in _records) {
+      final seriesId = '${record.vaccineId}/${record.seriesKey}';
+      if (seriesId != currentSeries) {
+        currentSeries = seriesId;
+        children.add(
+          Padding(
+            padding: EdgeInsets.only(top: children.isEmpty ? 0 : 14, bottom: 8),
+            child: Text(
+              '${record.vaccineName} · ${record.seriesKey}',
+              style: const TextStyle(
+                color: AppColors.inkSoft,
+                fontSize: 12,
+                fontWeight: FontWeight.w700,
+              ),
+            ),
+          ),
+        );
+      }
+      children
+        ..add(
+          _VaccinationTile(
+            record: record,
+            // 流转动作仅 scheduled 行可用（终态由服务端状态机守卫）。
+            onComplete:
+                widget.canWrite &&
+                    record.status == VaccinationStatus.scheduled &&
+                    !_mutating
+                ? () => _markCompleted(record)
+                : null,
+            onCancel:
+                widget.canWrite &&
+                    record.status == VaccinationStatus.scheduled &&
+                    !_mutating
+                ? () => _cancelRegistration(record)
+                : null,
+          ),
+        )
+        ..add(const SizedBox(height: 10));
+    }
+    return RefreshIndicator(
+      onRefresh: _load,
+      child: ListView(
+        padding: const EdgeInsets.fromLTRB(16, 8, 16, 30),
+        children: children,
+      ),
+    );
+  }
+}
+
+/// 疫苗条目：RecordTypeDot(疫苗) + 剂次标题 + 日期副行 + 状态 TagPill
+/// （图标+文字双通道，不单靠颜色区分）；scheduled 行附
+/// 「标记完成 / 取消登记」流转动作。
+class _VaccinationTile extends StatelessWidget {
+  const _VaccinationTile({
+    required this.record,
+    this.onComplete,
+    this.onCancel,
+  });
+
+  final Vaccination record;
+  final VoidCallback? onComplete;
+  final VoidCallback? onCancel;
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(14),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Row(
+              children: [
+                const RecordTypeDot(
+                  type: RecordType.vaccine,
+                  size: RecordTypeDotSize.md,
+                ),
+                const SizedBox(width: 12),
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        vaccinationDoseLabel(record),
+                        style: Theme.of(context).textTheme.titleMedium,
+                      ),
+                      const SizedBox(height: 4),
+                      Text(
+                        vaccinationDateLine(record),
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        style: const TextStyle(
+                          color: AppColors.inkSoft,
+                          fontSize: 12,
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+                const SizedBox(width: 8),
+                TagPill(
+                  vaccinationStatusLabel(record.status),
+                  color: vaccinationStatusColor(record.status),
+                ),
+              ],
+            ),
+            if (onComplete != null || onCancel != null) ...[
+              const SizedBox(height: 6),
+              Row(
+                mainAxisAlignment: MainAxisAlignment.end,
+                children: [
+                  TextButton.icon(
+                    onPressed: onCancel,
+                    icon: const Icon(Icons.close, size: 16),
+                    style: TextButton.styleFrom(
+                      foregroundColor: AppColors.inkSoft,
+                    ),
+                    label: const Text('取消登记'),
+                  ),
+                  const SizedBox(width: 4),
+                  TextButton.icon(
+                    onPressed: onComplete,
+                    icon: const Icon(Icons.check_circle_outline, size: 16),
+                    label: const Text('标记完成'),
+                  ),
+                ],
+              ),
+            ],
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+/// 标记完成对话框返回值。
+class _CompleteVaccinationResult {
+  const _CompleteVaccinationResult({
+    required this.administeredOn,
+    this.nextDueOn,
+    this.manufacturer,
+    this.batchNo,
+  });
+
+  final DateTime administeredOn;
+  final DateTime? nextDueOn;
+  final String? manufacturer;
+  final String? batchNo;
+}
+
+/// 标记完成对话框：接种日期必填（默认今天）、下次接种可选；
+/// 厂商/批号补录（契约可选字段，25 号报告遗留②的落地入口）。
+/// 日期规则复用 [vaccinationDateRuleError]（42201 前置拦截）。
+class _CompleteVaccinationDialog extends StatefulWidget {
+  const _CompleteVaccinationDialog({required this.record});
+
+  final Vaccination record;
+
+  @override
+  State<_CompleteVaccinationDialog> createState() =>
+      _CompleteVaccinationDialogState();
+}
+
+class _CompleteVaccinationDialogState
+    extends State<_CompleteVaccinationDialog> {
+  final _manufacturerCtrl = TextEditingController();
+  final _batchNoCtrl = TextEditingController();
+  DateTime _administeredOn = DateTime.now();
+  DateTime? _nextDueOn;
+  String? _dateError;
+
+  @override
+  void initState() {
+    super.initState();
+    _manufacturerCtrl.text = widget.record.manufacturer ?? '';
+    _batchNoCtrl.text = widget.record.batchNo ?? '';
+  }
+
+  @override
+  void dispose() {
+    _manufacturerCtrl.dispose();
+    _batchNoCtrl.dispose();
+    super.dispose();
+  }
+
+  void _confirm() {
+    final error = vaccinationDateRuleError(
+      status: VaccinationStatus.completed,
+      administeredOn: _administeredOn,
+      nextDueOn: _nextDueOn,
+    );
+    if (error != null) {
+      setState(() => _dateError = error);
+      return;
+    }
+    final manufacturer = _manufacturerCtrl.text.trim();
+    final batchNo = _batchNoCtrl.text.trim();
+    Navigator.of(context).pop(
+      _CompleteVaccinationResult(
+        administeredOn: _administeredOn,
+        nextDueOn: _nextDueOn,
+        manufacturer: manufacturer.isEmpty ? null : manufacturer,
+        batchNo: batchNo.isEmpty ? null : batchNo,
+      ),
+    );
+  }
+
+  Widget _dateTile({
+    required String label,
+    required DateTime? value,
+    required bool allowFuture,
+    required ValueChanged<DateTime> onPicked,
+  }) {
+    return ListTile(
+      contentPadding: EdgeInsets.zero,
+      leading: const Icon(Icons.event_outlined, color: AppColors.muted),
+      title: Text(label, style: const TextStyle(fontSize: 14)),
+      subtitle: Text(
+        value == null ? '未选择' : dateToJson(value),
+        style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
+      ),
+      onTap: () async {
+        final now = DateTime.now();
+        final picked = await showDatePicker(
+          context: context,
+          initialDate: value ?? now,
+          firstDate: DateTime(1990),
+          lastDate: allowFuture ? DateTime(now.year + 5) : now,
+        );
+        if (picked != null && mounted) {
+          setState(() {
+            onPicked(picked);
+            _dateError = null;
+          });
+        }
+      },
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      title: const Text('标记完成'),
+      content: SingleChildScrollView(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Text(
+              '「${vaccinationDoseLabel(widget.record)}」',
+              maxLines: 1,
+              overflow: TextOverflow.ellipsis,
+            ),
+            const SizedBox(height: 8),
+            _dateTile(
+              label: '接种日期',
+              value: _administeredOn,
+              allowFuture: false,
+              onPicked: (value) => _administeredOn = value,
+            ),
+            _dateTile(
+              label: '下次接种日期（可选）',
+              value: _nextDueOn,
+              allowFuture: true,
+              onPicked: (value) => _nextDueOn = value,
+            ),
+            if (_dateError != null) ...[
+              const SizedBox(height: 4),
+              Text(
+                _dateError!,
+                style: const TextStyle(color: AppColors.error, fontSize: 12),
+              ),
+            ],
+            const SizedBox(height: 12),
+            AppTextField(
+              label: '厂商（可选）',
+              controller: _manufacturerCtrl,
+              textInputAction: TextInputAction.next,
+            ),
+            const SizedBox(height: 12),
+            AppTextField(
+              label: '批号（可选）',
+              controller: _batchNoCtrl,
+              textInputAction: TextInputAction.done,
+              onSubmitted: (_) => _confirm(),
+            ),
+          ],
+        ),
+      ),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.of(context).pop(),
+          child: const Text('取消'),
+        ),
+        FilledButton(onPressed: _confirm, child: const Text('确认完成')),
+      ],
+    );
+  }
+}

lib/features/pets/weight_form_page.dart

@@ -0,0 +1,288 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/semantics.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/app_text_field.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/primary_button.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/health_record_display.dart';
+import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_repository.dart';
+
+/// 体重录入表单页（T2-13）。
+///
+/// - `weightKg` 前端校验对齐契约：(0, 500]、最多两位小数；后端 40000 兜底。
+/// - 称重时间默认「现在」，可回选日期（非今日取当日 12:00，保持
+///   measured_at DESC 排序直觉）；提交前转 UTC，ISO 8601 带 Z 上送。
+/// - 错误分层沿用登录纵切：字段 errorText / InlineErrorBanner / SnackBar。
+/// - 埋点：首次输入 health_record_create_started(recordType=weight)，
+///   成功/失败按 06 §1.4 经 [HealthRecordAnalytics] 上报。
+class WeightFormPage extends StatefulWidget {
+  const WeightFormPage({
+    required this.repository,
+    required this.petId,
+    super.key,
+    this.analytics,
+    this.entryPoint = HealthRecordEntryPoint.recordList,
+  });
+
+  final PetsRepository repository;
+  final String petId;
+  final HealthRecordAnalytics? analytics;
+  final HealthRecordEntryPoint entryPoint;
+
+  @override
+  State<WeightFormPage> createState() => _WeightFormPageState();
+}
+
+class _WeightFormPageState extends State<WeightFormPage> {
+  final _weightCtrl = TextEditingController();
+  final _noteCtrl = TextEditingController();
+
+  DateTime _measuredDate = DateTime.now();
+  String? _weightError;
+  String? _formError;
+  bool _submitting = false;
+
+  bool _startedFired = false;
+  int _attemptSeq = 0;
+  late final DateTime _openedAt;
+
+  @override
+  void initState() {
+    super.initState();
+    _openedAt = DateTime.now();
+  }
+
+  @override
+  void dispose() {
+    _weightCtrl.dispose();
+    _noteCtrl.dispose();
+    super.dispose();
+  }
+
+  void _markStarted() {
+    if (_startedFired) return;
+    _startedFired = true;
+    widget.analytics?.createStarted(
+      recordType: HealthRecordType.weight,
+      entryPoint: widget.entryPoint,
+    );
+  }
+
+  void _trackFailed(HealthRecordFailureReason reason, [int? errorCode]) {
+    widget.analytics?.createFailed(
+      recordType: HealthRecordType.weight,
+      reason: reason,
+      attemptSeq: _attemptSeq,
+      errorCode: errorCode,
+    );
+  }
+
+  String? _validateWeight() {
+    final text = _weightCtrl.text.trim();
+    if (text.isEmpty) return '请输入体重';
+    if (parseWeightKgInput(text) == null) {
+      return '体重需大于 0 且不超过 500 公斤，最多两位小数';
+    }
+    return null;
+  }
+
+  void _showFormError(String message) {
+    setState(() => _formError = message);
+    SemanticsService.sendAnnouncement(
+      View.of(context),
+      message,
+      TextDirection.ltr,
+    );
+  }
+
+  /// 称重时刻：今日取此刻，历史日期取当日 12:00（本地），提交前转 UTC。
+  DateTime _measuredAt() {
+    final now = DateTime.now();
+    final sameDay =
+        _measuredDate.year == now.year &&
+        _measuredDate.month == now.month &&
+        _measuredDate.day == now.day;
+    final local = sameDay
+        ? now
+        : DateTime(
+            _measuredDate.year,
+            _measuredDate.month,
+            _measuredDate.day,
+            12,
+          );
+    return local.toUtc();
+  }
+
+  Future<void> _submit() async {
+    if (_submitting) return;
+    _attemptSeq++;
+    final weightError = _validateWeight();
+    if (weightError != null) {
+      setState(() => _weightError = weightError);
+      _trackFailed(HealthRecordFailureReason.validationError);
+      return;
+    }
+
+    setState(() {
+      _submitting = true;
+      _formError = null;
+    });
+    try {
+      final note = _noteCtrl.text.trim();
+      final record = await widget.repository.createWeight(
+        widget.petId,
+        CreateWeightRequest(
+          weightKg: parseWeightKgInput(_weightCtrl.text)!,
+          measuredAt: _measuredAt(),
+          note: note.isEmpty ? null : note,
+        ),
+      );
+      widget.analytics?.createSucceeded(
+        recordType: HealthRecordType.weight,
+        durationMs: DateTime.now().difference(_openedAt).inMilliseconds,
+      );
+      if (mounted) Navigator.of(context).pop(record);
+    } on PetAccessDeniedException {
+      if (!mounted) return;
+      _showFormError('你没有权限为该宠物添加记录');
+      _trackFailed(HealthRecordFailureReason.permissionDenied, 40300);
+    } on PetNotFoundException {
+      if (!mounted) return;
+      final navigator = Navigator.of(context);
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('宠物不存在或已被删除')));
+      _trackFailed(HealthRecordFailureReason.notFound, 40401);
+      navigator.pop();
+    } on ApiRateLimitException {
+      if (!mounted) return;
+      _showFormError('操作过于频繁，请稍后再试');
+      _trackFailed(HealthRecordFailureReason.rateLimited);
+    } on ApiBusinessException catch (error) {
+      if (!mounted) return;
+      final isParam = error.code == ApiCodes.paramError;
+      _showFormError(isParam ? '请检查填写内容后重试' : '保存失败，请稍后重试');
+      _trackFailed(
+        isParam
+            ? HealthRecordFailureReason.validationError
+            : HealthRecordFailureReason.serverError,
+        error.code,
+      );
+    } on ApiNetworkException {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: const Text('网络异常，请检查网络后重试'),
+          action: SnackBarAction(label: '重试', onPressed: _submit),
+        ),
+      );
+      _trackFailed(HealthRecordFailureReason.networkError);
+    } on SessionExpiredException {
+      // 会话失效：认证状态机自动回登录页。
+    } finally {
+      if (mounted) setState(() => _submitting = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        foregroundColor: AppColors.ink,
+        title: const Text('记录体重'),
+        centerTitle: true,
+        titleTextStyle: const TextStyle(
+          color: AppColors.ink,
+          fontSize: 16,
+          fontWeight: FontWeight.w800,
+        ),
+      ),
+      body: SafeArea(
+        child: ListView(
+          padding: const EdgeInsets.fromLTRB(20, 8, 20, 30),
+          children: [
+            AppTextField(
+              label: '体重（公斤）',
+              controller: _weightCtrl,
+              prefixIcon: Icons.monitor_weight_outlined,
+              errorText: _weightError,
+              helperText: '大于 0 且不超过 500，最多两位小数',
+              enabled: !_submitting,
+              keyboardType: const TextInputType.numberWithOptions(
+                decimal: true,
+              ),
+              textInputAction: TextInputAction.next,
+              onChanged: (_) {
+                _markStarted();
+                if (_weightError != null || _formError != null) {
+                  setState(() {
+                    _weightError = null;
+                    _formError = null;
+                  });
+                }
+              },
+            ),
+            const SizedBox(height: 14),
+            ListTile(
+              shape: RoundedRectangleBorder(
+                side: const BorderSide(color: AppColors.border),
+                borderRadius: BorderRadius.circular(AppRadius.lg),
+              ),
+              tileColor: AppColors.surface,
+              leading: const Icon(Icons.event_outlined, color: AppColors.muted),
+              title: const Text('称重日期', style: TextStyle(fontSize: 14)),
+              subtitle: Text(
+                dateToJson(_measuredDate),
+                style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
+              ),
+              trailing: const Icon(
+                Icons.calendar_month_outlined,
+                color: AppColors.muted,
+              ),
+              enabled: !_submitting,
+              onTap: () async {
+                final now = DateTime.now();
+                final value = await showDatePicker(
+                  context: context,
+                  initialDate: _measuredDate,
+                  firstDate: DateTime(1990),
+                  lastDate: now,
+                );
+                if (value != null && mounted) {
+                  _markStarted();
+                  setState(() => _measuredDate = value);
+                }
+              },
+            ),
+            const SizedBox(height: 14),
+            AppTextField(
+              label: '备注（可选，如：饭后称重）',
+              controller: _noteCtrl,
+              prefixIcon: Icons.sticky_note_2_outlined,
+              enabled: !_submitting,
+              textInputAction: TextInputAction.done,
+              onChanged: (_) => _markStarted(),
+              onSubmitted: (_) => _submit(),
+            ),
+            if (_formError != null) ...[
+              const SizedBox(height: 16),
+              InlineErrorBanner(message: _formError!),
+            ],
+            const SizedBox(height: 24),
+            PrimaryButton(
+              label: '保存记录',
+              isLoading: _submitting,
+              onPressed: _submit,
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/features/pets/weight_records_page.dart

@@ -0,0 +1,294 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/analytics/analytics_page_name.dart';
+import 'package:patbond_flutter/core/navigation/fade_route.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/empty_state_illustration.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/record_type_dot.dart';
+import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
+import 'package:patbond_flutter/features/pets/health_record_display.dart';
+import 'package:patbond_flutter/features/pets/pet_display.dart';
+import 'package:patbond_flutter/features/pets/pet_models.dart';
+import 'package:patbond_flutter/features/pets/pets_repository.dart';
+import 'package:patbond_flutter/features/pets/weight_form_page.dart';
+
+enum _ListPhase { loading, ready, error }
+
+/// 体重历史列表页（T2-13）：cursor 分页（「加载更多」追加，末页收起），
+/// 四态齐备；新记录经 [WeightFormPage] 录入后就地插入列表头。
+///
+/// 曝光埋点：每次进入首个成功加载上报一次
+/// `health_record_viewed(recordType=weight, source=pet_detail)`
+/// （工单口径：列表曝光；不随滚动逐条上报）。
+class WeightRecordsPage extends StatefulWidget {
+  const WeightRecordsPage({
+    required this.repository,
+    required this.petId,
+    required this.canWrite,
+    super.key,
+    this.analytics,
+    this.pageSize,
+  });
+
+  final PetsRepository repository;
+  final String petId;
+
+  /// owner/caregiver 可写；viewer 隐藏录入入口（40300 语义前置）。
+  final bool canWrite;
+
+  final HealthRecordAnalytics? analytics;
+
+  /// 每页条数（测试注入小页验证分页；缺省走服务端默认 20）。
+  final int? pageSize;
+
+  @override
+  State<WeightRecordsPage> createState() => _WeightRecordsPageState();
+}
+
+class _WeightRecordsPageState extends State<WeightRecordsPage> {
+  _ListPhase _phase = _ListPhase.loading;
+  List<WeightRecord> _records = const [];
+  String? _nextCursor;
+  bool _hasMore = false;
+  bool _loadingMore = false;
+  ApiException? _error;
+  bool _viewedFired = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _loadFirstPage();
+  }
+
+  Future<void> _loadFirstPage() async {
+    setState(() {
+      _phase = _ListPhase.loading;
+      _error = null;
+    });
+    try {
+      final page = await widget.repository.listWeights(
+        widget.petId,
+        limit: widget.pageSize,
+      );
+      if (!mounted) return;
+      setState(() {
+        _records = page.items;
+        _nextCursor = page.nextCursor;
+        _hasMore = page.hasMore;
+        _phase = _ListPhase.ready;
+      });
+      if (!_viewedFired) {
+        _viewedFired = true;
+        widget.analytics?.viewed(
+          recordType: HealthRecordType.weight,
+          source: HealthRecordViewSource.petDetail,
+        );
+      }
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      setState(() {
+        _error = error;
+        _phase = _ListPhase.error;
+      });
+    }
+  }
+
+  Future<void> _loadMore() async {
+    if (_loadingMore || !_hasMore) return;
+    setState(() => _loadingMore = true);
+    try {
+      final page = await widget.repository.listWeights(
+        widget.petId,
+        limit: widget.pageSize,
+        cursor: _nextCursor,
+      );
+      if (!mounted) return;
+      setState(() {
+        _records = [..._records, ...page.items];
+        _nextCursor = page.nextCursor;
+        _hasMore = page.hasMore;
+      });
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(petLoadErrorMessage(error))));
+    } finally {
+      if (mounted) setState(() => _loadingMore = false);
+    }
+  }
+
+  Future<void> _openCreate() async {
+    final created = await Navigator.of(context).push<WeightRecord>(
+      fadePageRoute(
+        WeightFormPage(
+          repository: widget.repository,
+          petId: widget.petId,
+          analytics: widget.analytics,
+        ),
+        // record_form：健康记录漏斗到达段页名（06 §1.6 / §2.2）。
+        settings: RouteSettings(name: AnalyticsPageName.recordForm.pageName),
+      ),
+    );
+    if (created != null && mounted) {
+      setState(() {
+        // 契约排序 measured_at DESC, id DESC：新记录通常最新，就地插头；
+        // 补录历史日期的位置以下次刷新为准（服务端是唯一事实来源）。
+        _records = [created, ..._records];
+        if (_phase != _ListPhase.ready) _phase = _ListPhase.ready;
+      });
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('已记录体重')));
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.transparent,
+        elevation: 0,
+        foregroundColor: AppColors.ink,
+        title: const Text('体重记录'),
+        centerTitle: true,
+        titleTextStyle: const TextStyle(
+          color: AppColors.ink,
+          fontSize: 16,
+          fontWeight: FontWeight.w800,
+        ),
+        actions: [
+          if (widget.canWrite && _phase == _ListPhase.ready)
+            IconButton(
+              tooltip: '记录体重',
+              onPressed: _openCreate,
+              icon: const Icon(Icons.add),
+            ),
+        ],
+      ),
+      body: switch (_phase) {
+        _ListPhase.loading => const Center(child: CircularProgressIndicator()),
+        _ListPhase.error => Center(
+          child: Padding(
+            padding: const EdgeInsets.all(24),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                InlineErrorBanner(message: petLoadErrorMessage(_error)),
+                const SizedBox(height: 16),
+                FilledButton(
+                  onPressed: _loadFirstPage,
+                  child: const Text('重试'),
+                ),
+              ],
+            ),
+          ),
+        ),
+        _ListPhase.ready when _records.isEmpty => Center(
+          child: SingleChildScrollView(
+            child: EmptyStateIllustration(
+              icon: Icons.monitor_weight_outlined,
+              title: '还没有体重记录',
+              description: '定期称重，看见毛孩子的成长曲线',
+              ctaLabel: widget.canWrite ? '记录第一条' : null,
+              onCtaPressed: widget.canWrite ? _openCreate : null,
+            ),
+          ),
+        ),
+        _ListPhase.ready => _list(),
+      },
+    );
+  }
+
+  Widget _list() {
+    return RefreshIndicator(
+      onRefresh: _loadFirstPage,
+      child: ListView(
+        padding: const EdgeInsets.fromLTRB(16, 8, 16, 30),
+        children: [
+          for (final record in _records) ...[
+            _WeightTile(record: record),
+            const SizedBox(height: 10),
+          ],
+          if (_hasMore)
+            Center(
+              child: _loadingMore
+                  ? const Padding(
+                      padding: EdgeInsets.all(12),
+                      child: SizedBox(
+                        width: 22,
+                        height: 22,
+                        child: CircularProgressIndicator(strokeWidth: 2),
+                      ),
+                    )
+                  : TextButton(onPressed: _loadMore, child: const Text('加载更多')),
+            ),
+        ],
+      ),
+    );
+  }
+}
+
+/// 体重条目：RecordTypeDot(体重) + 大数值（primaryDark w800）+
+/// 日期/备注副行（05 §3.3 时间线条目形态的数值型变体）。
+class _WeightTile extends StatelessWidget {
+  const _WeightTile({required this.record});
+
+  final WeightRecord record;
+
+  @override
+  Widget build(BuildContext context) {
+    final meta = StringBuffer(formatMeasuredAt(record.measuredAt));
+    if (record.note != null && record.note!.isNotEmpty) {
+      meta.write(' · ${record.note}');
+    }
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(14),
+        child: Row(
+          children: [
+            const RecordTypeDot(
+              type: RecordType.weight,
+              size: RecordTypeDotSize.md,
+            ),
+            const SizedBox(width: 12),
+            Expanded(
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Text(
+                    '${formatWeightKg(record.weightKg)} kg',
+                    style: const TextStyle(
+                      color: AppColors.primaryDark,
+                      fontSize: 15,
+                      fontWeight: FontWeight.w800,
+                    ),
+                  ),
+                  const SizedBox(height: 4),
+                  Text(
+                    meta.toString(),
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                    style: const TextStyle(
+                      color: AppColors.inkSoft,
+                      fontSize: 12,
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+/// 称重时刻展示：本地时区 `YYYY-MM-DD HH:mm`。
+String formatMeasuredAt(DateTime measuredAt) {
+  final local = measuredAt.toLocal();
+  final h = local.hour.toString().padLeft(2, '0');
+  final min = local.minute.toString().padLeft(2, '0');
+  return '${dateToJson(local)} $h:$min';
+}

lib/features/post/post_detail_page.dart

@@ -0,0 +1,986 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/comment_tile.dart';
+import 'package:patbond_flutter/core/widgets/inline_error_banner.dart';
+import 'package:patbond_flutter/core/widgets/like_button.dart';
+import 'package:patbond_flutter/core/widgets/pet_avatar.dart';
+import 'package:patbond_flutter/core/widgets/post_media_grid.dart';
+import 'package:patbond_flutter/features/community/community_controller.dart';
+import 'package:patbond_flutter/features/community/community_display.dart';
+import 'package:patbond_flutter/features/community/community_exceptions.dart';
+import 'package:patbond_flutter/features/community/community_interaction_analytics.dart';
+import 'package:patbond_flutter/features/community/community_models.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+/// 帖子详情页（T3-15 整页替换，demo 数据层退役）：媒体全量渲染
+/// （真九宫格 + 大图预览）+ 作者卡（关注双态）+ 正文 + 操作行
+/// （ToggleSync 接线，Feed 卡片与详情共享同一 [CommunityController]
+/// 实例，互动状态跨页一致）+ 评论区（游标列表 / 输入框创建 /
+/// 仅本人评论可删）。
+///
+/// 形态取舍：
+/// - 多图媒体区按本单裁定走**真九宫格**（[PostMediaGrid] 全量形态，
+///   05 号 D11 的轮播方案弃用）；点格进全屏大图浏览
+///   （03 号拍板 E：内置 InteractiveViewer，体验不达再升级 photo_view）。
+/// - 40403（不存在/已删/防枚举合并）→ SnackBar 提示后返回 Feed 并
+///   触发刷新（列表剔除失效帖）。
+/// - 评论 @ 回复的**发起** UI 留待（数据层 replyToUserId 已支持），
+///   响应中的 replyToUser 照常呈现。
+class PostDetailPage extends StatefulWidget {
+  const PostDetailPage({
+    required this.controller,
+    required this.postId,
+    super.key,
+    this.currentUserId,
+    this.analytics,
+    this.now,
+  });
+
+  /// Tab 级单例（app.dart 装配）；详情副本与 Feed 卡片互动字段同源。
+  final CommunityController controller;
+
+  final String postId;
+
+  /// 当前登录用户 id（评论删除入口与关注钮自见性的 UI 判定；
+  /// 服务端仍是权限的唯一裁决者）。
+  final String? currentUserId;
+
+  /// 互动域埋点（评论成败对 + 关注对；点赞/收藏对经 controller 上报）。
+  final CommunityInteractionAnalytics? analytics;
+
+  /// 相对时间的参考时钟（测试注入；缺省取当前时间）。
+  final DateTime? now;
+
+  @override
+  State<PostDetailPage> createState() => _PostDetailPageState();
+}
+
+enum _DetailPhase { loading, error, ready }
+
+class _PostDetailPageState extends State<PostDetailPage> {
+  final _commentController = TextEditingController();
+  final _commentFocus = FocusNode();
+
+  _DetailPhase _phase = _DetailPhase.loading;
+  ApiException? _loadError;
+
+  /// 评论列表（页面级状态按页自建，03 号评估 §2 纪律；DESC 新评在前）。
+  _DetailPhase _commentsPhase = _DetailPhase.loading;
+  ApiException? _commentsError;
+  List<PostComment> _comments = const [];
+  String? _commentsCursor;
+  bool _commentsHasMore = false;
+  LoadMorePhase _commentsLoadMore = LoadMorePhase.idle;
+
+  bool _sending = false;
+  final Set<String> _deletingIds = {};
+
+  /// 输入会话起点（首个字符输入时记；comment_create_succeeded 的
+  /// durationMs 口径，评论不设 started 事件）。
+  DateTime? _composeStartedAt;
+
+  /// 本次输入会话内的提交序号（comment_create_failed.attemptSeq，
+  /// 从 1 起；成功或清空输入后重置）。
+  int _attemptSeq = 0;
+
+  /// 关注状态（页面级；作者为本人或加载失败时不渲染关注钮）。
+  FollowStats? _followStats;
+  bool _following = false;
+
+  /// 40403 返回 Feed 的单次守卫（详情与评论路径都可能触发）。
+  bool _leaving = false;
+
+  CommunityController get _controller => widget.controller;
+
+  Post? get _post => _controller.cachedPost(widget.postId);
+
+  @override
+  void initState() {
+    super.initState();
+    _commentController.addListener(_onComposeChanged);
+    if (_post != null) {
+      _phase = _DetailPhase.ready;
+      _ensureFollowStats(_post!);
+    }
+    unawaited(_loadPost());
+    unawaited(_loadComments());
+  }
+
+  @override
+  void dispose() {
+    _commentController.dispose();
+    _commentFocus.dispose();
+    super.dispose();
+  }
+
+  // ---- 详情加载 ----
+
+  Future<void> _loadPost() async {
+    if (_post == null && _phase != _DetailPhase.loading) {
+      setState(() {
+        _phase = _DetailPhase.loading;
+        _loadError = null;
+      });
+    }
+    try {
+      final post = await _controller.getPost(widget.postId);
+      if (!mounted) return;
+      setState(() => _phase = _DetailPhase.ready);
+      _ensureFollowStats(post);
+    } on PostNotFoundException {
+      _handleGone();
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      // 有内存副本则保留展示（后台刷新失败不打断阅读）；无副本收敛 error 态。
+      if (_post == null) {
+        setState(() {
+          _phase = _DetailPhase.error;
+          _loadError = error;
+        });
+      }
+    }
+  }
+
+  /// 40403：帖子不存在/已删/不可见——提示后返回 Feed 并刷新
+  /// （整体替换剔除失效帖）。
+  void _handleGone() {
+    if (_leaving || !mounted) return;
+    _leaving = true;
+    ScaffoldMessenger.of(
+      context,
+    ).showSnackBar(const SnackBar(content: Text('帖子不存在或已被删除')));
+    unawaited(_controller.refresh());
+    Navigator.of(context).pop();
+  }
+
+  // ---- 评论列表 ----
+
+  Future<void> _loadComments() async {
+    setState(() {
+      _commentsPhase = _DetailPhase.loading;
+      _commentsError = null;
+    });
+    try {
+      final page = await _controller.repository.listComments(widget.postId);
+      if (!mounted) return;
+      setState(() {
+        _comments = page.items;
+        _commentsCursor = page.nextCursor;
+        _commentsHasMore = page.hasMore;
+        _commentsPhase = _DetailPhase.ready;
+        _commentsLoadMore = LoadMorePhase.idle;
+      });
+    } on PostNotFoundException {
+      _handleGone();
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      setState(() {
+        _commentsPhase = _DetailPhase.error;
+        _commentsError = error;
+      });
+    }
+  }
+
+  Future<void> _loadMoreComments() async {
+    if (_commentsPhase != _DetailPhase.ready ||
+        !_commentsHasMore ||
+        _commentsLoadMore == LoadMorePhase.loading) {
+      return;
+    }
+    setState(() => _commentsLoadMore = LoadMorePhase.loading);
+    try {
+      final page = await _controller.repository.listComments(
+        widget.postId,
+        cursor: _commentsCursor,
+      );
+      if (!mounted) return;
+      setState(() {
+        _comments = [..._comments, ...page.items];
+        _commentsCursor = page.nextCursor;
+        _commentsHasMore = page.hasMore;
+        _commentsLoadMore = LoadMorePhase.idle;
+      });
+    } on ApiException {
+      if (!mounted) return;
+      setState(() => _commentsLoadMore = LoadMorePhase.error);
+    }
+  }
+
+  bool _onScrollNotification(ScrollNotification notification) {
+    if (notification is ScrollUpdateNotification ||
+        notification is ScrollEndNotification) {
+      // 触底翻页（余量 400 提前预取）；失败态只走显式重试（Feed 同款守卫）。
+      if (notification.metrics.extentAfter < 400 &&
+          _commentsLoadMore == LoadMorePhase.idle) {
+        unawaited(_loadMoreComments());
+      }
+    }
+    return false;
+  }
+
+  // ---- 评论创建 / 删除 ----
+
+  void _onComposeChanged() {
+    final text = _commentController.text;
+    if (text.isEmpty) {
+      // 清空 = 输入会话结束（durationMs 起点与 attemptSeq 一并重置）。
+      _composeStartedAt = null;
+      _attemptSeq = 0;
+    } else {
+      _composeStartedAt ??= DateTime.now();
+    }
+    setState(() {}); // 发送钮可用态跟随文本。
+  }
+
+  Future<void> _submitComment() async {
+    final text = _commentController.text.trim();
+    if (text.isEmpty || _sending) return;
+    final startedAt = _composeStartedAt ?? DateTime.now();
+    _attemptSeq += 1;
+    setState(() => _sending = true);
+    try {
+      final comment = await _controller.repository.createComment(
+        widget.postId,
+        CreateCommentRequest(content: text),
+      );
+      if (!mounted) return;
+      widget.analytics?.commentCreateSucceeded(
+        durationMs: DateTime.now().difference(startedAt).inMilliseconds,
+        isReply: false,
+        textLength: text.length,
+      );
+      setState(() {
+        _comments = [comment, ..._comments];
+        _sending = false;
+      });
+      _controller.adjustCommentCount(widget.postId, 1);
+      _commentController.clear();
+      _commentFocus.unfocus();
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      final reason = commentCreateFailureReasonOf(error);
+      if (reason != null) {
+        widget.analytics?.commentCreateFailed(
+          reason: reason,
+          attemptSeq: _attemptSeq,
+          errorCode: error is ApiBusinessException ? error.code : null,
+        );
+      }
+      setState(() => _sending = false);
+      if (error is PostNotFoundException) {
+        _handleGone();
+        return;
+      }
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(_commentErrorMessage(error))));
+    }
+  }
+
+  String _commentErrorMessage(ApiException error) => switch (error) {
+    ApiNetworkException _ => '网络异常，请检查网络后重试',
+    ApiRateLimitException _ => '请求过于频繁，请稍后再试',
+    ApiBusinessException(code: ApiCodes.paramError) => '评论内容不合规，请修改后重试',
+    _ => '评论发送失败，请稍后重试',
+  };
+
+  Future<void> _deleteComment(PostComment comment) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('删除这条评论？'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context, false),
+            child: const Text('取消'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.pop(context, true),
+            child: const Text('删除'),
+          ),
+        ],
+      ),
+    );
+    if (confirmed != true || !mounted) return;
+    setState(() => _deletingIds.add(comment.id));
+    try {
+      await _controller.repository.deleteComment(comment.id);
+      if (!mounted) return;
+      _removeCommentLocally(comment.id);
+    } on CommentNotFoundException {
+      // 已在别处删除：本地同步剔除（终态一致，下次 getPost 对齐权威计数）。
+      if (!mounted) return;
+      _removeCommentLocally(comment.id);
+    } on ApiException catch (error) {
+      if (!mounted) return;
+      setState(() => _deletingIds.remove(comment.id));
+      final message = switch (error) {
+        PostAccessDeniedException _ => '没有权限删除这条评论',
+        ApiNetworkException _ => '网络异常，请检查网络后重试',
+        _ => '删除失败，请稍后重试',
+      };
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(message)));
+    }
+  }
+
+  void _removeCommentLocally(String commentId) {
+    setState(() {
+      _deletingIds.remove(commentId);
+      _comments = _comments.where((c) => c.id != commentId).toList();
+    });
+    _controller.adjustCommentCount(widget.postId, -1);
+  }
+
+  // ---- 关注 ----
+
+  void _ensureFollowStats(Post post) {
+    if (_followStats != null) return;
+    final authorId = post.author.userId;
+    if (authorId == widget.currentUserId) return; // 本人帖不渲染关注钮。
+    unawaited(() async {
+      try {
+        final stats = await _controller.repository.getFollowStats(authorId);
+        if (!mounted) return;
+        setState(() {
+          _followStats = stats;
+          _following = stats.followedByMe;
+        });
+      } on ApiException {
+        // 关注状态拉取失败：不渲染关注钮（不阻塞正文阅读）。
+      }
+    }());
+  }
+
+  Future<void> _toggleFollow(String authorId) async {
+    final target = !_following;
+    if (!target) {
+      final confirmed = await showDialog<bool>(
+        context: context,
+        builder: (context) => AlertDialog(
+          title: const Text('不再关注 TA？'),
+          actions: [
+            TextButton(
+              onPressed: () => Navigator.pop(context, false),
+              child: const Text('取消'),
+            ),
+            FilledButton(
+              onPressed: () => Navigator.pop(context, true),
+              child: const Text('不再关注'),
+            ),
+          ],
+        ),
+      );
+      if (confirmed != true || !mounted) return;
+    }
+    setState(() => _following = target); // 乐观翻转（§4.5）。
+    try {
+      final state = target
+          ? await _controller.repository.followUser(authorId)
+          : await _controller.repository.unfollowUser(authorId);
+      if (!mounted) return;
+      target
+          ? widget.analytics?.userFollowed(source: InteractionSource.postDetail)
+          : widget.analytics?.userUnfollowed(
+              source: InteractionSource.postDetail,
+            );
+      setState(() => _following = state.following); // 权威终态对账。
+    } on ApiException {
+      if (!mounted) return;
+      // 回滚直接跳变 + SnackBar（§4.5，无过渡动画）。
+      setState(() => _following = !target);
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('操作失败，请重试')));
+    }
+  }
+
+  // ---- 大图浏览 ----
+
+  void _openGallery(List<PostMediaItem> media, int initialIndex) {
+    Navigator.of(context).push(
+      MaterialPageRoute<void>(
+        fullscreenDialog: true,
+        builder: (context) => _MediaGalleryPage(
+          urls: [for (final item in media) item.url],
+          initialIndex: initialIndex,
+        ),
+      ),
+    );
+  }
+
+  // ---- 渲染 ----
+
+  @override
+  Widget build(BuildContext context) {
+    return ListenableBuilder(
+      listenable: _controller,
+      builder: (context, _) {
+        // 点赞/收藏对账失败的一次性 SnackBar（§3.5 回滚提示）。
+        if (_controller.toggleError != null) {
+          _controller.clearToggleError();
+          WidgetsBinding.instance.addPostFrameCallback((_) {
+            if (!mounted) return;
+            ScaffoldMessenger.of(
+              context,
+            ).showSnackBar(const SnackBar(content: Text('操作失败，请重试')));
+          });
+        }
+        final post = _post;
+        return Scaffold(
+          appBar: AppBar(
+            title: const Text(
+              '社区动态',
+              style: TextStyle(fontSize: 16, fontWeight: FontWeight.w800),
+            ),
+            centerTitle: true,
+            actions: [
+              IconButton(
+                tooltip: '分享',
+                onPressed: () => ScaffoldMessenger.of(
+                  context,
+                ).showSnackBar(const SnackBar(content: Text('分享功能即将上线'))),
+                icon: const Icon(Icons.ios_share_outlined),
+              ),
+            ],
+          ),
+          body: post != null ? _content(post) : _placeholder(),
+          bottomSheet: post != null ? _commentInputBar() : null,
+        );
+      },
+    );
+  }
+
+  /// 无内存副本时的 loading / error 态。
+  Widget _placeholder() {
+    if (_phase == _DetailPhase.error) {
+      return Padding(
+        padding: const EdgeInsets.all(24),
+        child: Column(
+          children: [
+            InlineErrorBanner(message: feedLoadErrorMessage(_loadError)),
+            const SizedBox(height: 16),
+            FilledButton(onPressed: _loadPost, child: const Text('重试')),
+          ],
+        ),
+      );
+    }
+    return const Center(child: CircularProgressIndicator());
+  }
+
+  Widget _content(Post post) {
+    return NotificationListener<ScrollNotification>(
+      onNotification: _onScrollNotification,
+      child: ListView(
+        padding: const EdgeInsets.only(bottom: 100),
+        children: [
+          _mediaSection(post),
+          Padding(
+            padding: const EdgeInsets.all(16),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                _authorCard(post),
+                const SizedBox(height: 14),
+                _bodyCard(post),
+                const SizedBox(height: 14),
+                _actionRow(post),
+                const SizedBox(height: 22),
+                Text(
+                  '评论 (${post.commentCount})',
+                  style: Theme.of(context).textTheme.titleLarge,
+                ),
+                const SizedBox(height: 12),
+                ..._commentsSection(),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  /// 媒体全量：单图原比例（高度钳制 [0.75w, 1.33w]）；多图真九宫格
+  ///（PostMediaGrid 全量形态，列数 2/4→2 列、3/5–9→3 列 + 超 9 折叠）。
+  Widget _mediaSection(Post post) {
+    final media = [...post.media]
+      ..sort((a, b) => a.position.compareTo(b.position));
+    if (media.isEmpty) return const SizedBox.shrink();
+    if (media.length == 1) {
+      final item = media.first;
+      var ratio = 4 / 3;
+      final width = item.widthPx;
+      final height = item.heightPx;
+      if (width != null && height != null && width > 0 && height > 0) {
+        // 高度钳制 [宽×0.75, 宽×1.33]（05 §2.2）→ 宽高比落 [1/1.33, 1/0.75]。
+        ratio = (width / height).clamp(1 / 1.33, 1 / 0.75);
+      }
+      return GestureDetector(
+        onTap: () => _openGallery(media, 0),
+        child: AspectRatio(
+          aspectRatio: ratio,
+          child: RemoteImage(url: item.url),
+        ),
+      );
+    }
+    return Padding(
+      padding: const EdgeInsets.fromLTRB(16, 4, 16, 0),
+      child: PostMediaGrid(
+        urls: [for (final item in media) item.url],
+        onCellTap: (index) => _openGallery(media, index),
+      ),
+    );
+  }
+
+  Widget _authorCard(Post post) {
+    final author = post.author;
+    final isSelf = author.userId == widget.currentUserId;
+    return SectionCard(
+      child: Row(
+        children: [
+          PetAvatar(size: PetAvatarSize.md, url: author.avatarUrl),
+          const SizedBox(width: 12),
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  authorDisplayName(author),
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  style: Theme.of(context).textTheme.titleMedium,
+                ),
+                const SizedBox(height: 2),
+                Text(
+                  feedRelativeTime(
+                    post.publishedAt ?? post.createdAt,
+                    now: widget.now,
+                  ),
+                  style: const TextStyle(
+                    color: AppColors.inkSoft,
+                    fontSize: 12,
+                  ),
+                ),
+              ],
+            ),
+          ),
+          if (!isSelf && _followStats != null) _followButton(author.userId),
+        ],
+      ),
+    );
+  }
+
+  /// 关注双态（05 §2.2）：未关注 tonal「＋ 关注」；已关注 Outlined
+  /// 「已关注」+ 取关确认。
+  Widget _followButton(String authorId) {
+    if (_following) {
+      return OutlinedButton(
+        onPressed: () => _toggleFollow(authorId),
+        style: OutlinedButton.styleFrom(
+          foregroundColor: AppColors.inkSoft,
+          side: const BorderSide(color: AppColors.border),
+        ),
+        child: const Text('已关注'),
+      );
+    }
+    return FilledButton.tonal(
+      onPressed: () => _toggleFollow(authorId),
+      child: const Text('＋ 关注'),
+    );
+  }
+
+  Widget _bodyCard(Post post) {
+    return SectionCard(
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          if (post.title != null) ...[
+            Text(post.title!, style: Theme.of(context).textTheme.titleMedium),
+            const SizedBox(height: 8),
+          ],
+          if (post.category == PostCategory.help) ...[
+            const TagPill('求助', color: AppColors.accent),
+            const SizedBox(height: 8),
+          ],
+          Text(
+            post.content,
+            style: const TextStyle(
+              color: AppColors.ink,
+              fontSize: 14,
+              height: 1.6,
+            ),
+          ),
+          const SizedBox(height: 12),
+          Text(
+            '发布于 ${feedRelativeTime(post.publishedAt ?? post.createdAt, now: widget.now)}',
+            style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
+          ),
+        ],
+      ),
+    );
+  }
+
+  /// 操作行：与 Feed 卡片同一套组件、同一 ToggleSync 实例（卡片外裸排，
+  /// demo 的 FilledButton.tonalIcon 形态弃用）。
+  Widget _actionRow(Post post) {
+    return Row(
+      children: [
+        LikeButton(
+          variant: LikeButtonVariant.like,
+          active: post.likedByMe,
+          count: post.likeCount,
+          onPressed: () => _controller.toggleLike(
+            widget.postId,
+            source: InteractionSource.postDetail,
+          ),
+          semanticLabel: '点赞',
+        ),
+        const SizedBox(width: 4),
+        // 评论锚点：聚焦底部输入框（唤起键盘直接开写）。
+        Semantics(
+          label: '评论',
+          button: true,
+          child: InkWell(
+            onTap: _commentFocus.requestFocus,
+            borderRadius: BorderRadius.circular(AppRadius.pill),
+            child: ConstrainedBox(
+              constraints: const BoxConstraints(minWidth: 44, minHeight: 44),
+              child: Padding(
+                padding: const EdgeInsets.symmetric(horizontal: 8),
+                child: Row(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    const Icon(
+                      Icons.chat_bubble_outline,
+                      size: 20,
+                      color: AppColors.inkSoft,
+                    ),
+                    const SizedBox(width: 4),
+                    Text(
+                      '${post.commentCount}',
+                      style: const TextStyle(
+                        color: AppColors.inkSoft,
+                        fontSize: 13,
+                        fontWeight: FontWeight.w600,
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ),
+          ),
+        ),
+        const SizedBox(width: 4),
+        LikeButton(
+          variant: LikeButtonVariant.bookmark,
+          active: post.bookmarkedByMe,
+          count: post.bookmarkCount,
+          onPressed: () => _controller.toggleBookmark(
+            widget.postId,
+            source: InteractionSource.postDetail,
+          ),
+          semanticLabel: '收藏',
+        ),
+      ],
+    );
+  }
+
+  List<Widget> _commentsSection() {
+    switch (_commentsPhase) {
+      case _DetailPhase.loading:
+        return const [
+          _CommentSkeleton(),
+          SizedBox(height: 12),
+          _CommentSkeleton(),
+        ];
+      case _DetailPhase.error:
+        return [
+          Center(
+            child: Column(
+              children: [
+                Text(
+                  feedLoadErrorMessage(_commentsError),
+                  style: const TextStyle(
+                    color: AppColors.inkSoft,
+                    fontSize: 12,
+                  ),
+                ),
+                TextButton(
+                  onPressed: _loadComments,
+                  child: const Text('加载失败，点此重试'),
+                ),
+              ],
+            ),
+          ),
+        ];
+      case _DetailPhase.ready:
+        if (_comments.isEmpty) {
+          return const [
+            Padding(
+              padding: EdgeInsets.symmetric(vertical: 32),
+              child: Column(
+                children: [
+                  // 纯装饰图标，muted 合法（DEBT-2 口径）。
+                  Icon(
+                    Icons.chat_bubble_outline,
+                    size: 36,
+                    color: AppColors.muted,
+                  ),
+                  SizedBox(height: 8),
+                  Text(
+                    '还没有评论，来抢沙发',
+                    style: TextStyle(color: AppColors.inkSoft, fontSize: 12),
+                  ),
+                ],
+              ),
+            ),
+          ];
+        }
+        return [
+          for (final comment in _comments)
+            Padding(
+              padding: const EdgeInsets.only(bottom: 12),
+              child: CommentTile(
+                comment: comment,
+                now: widget.now,
+                deleting: _deletingIds.contains(comment.id),
+                // 仅本人评论渲染删除入口（服务端 40301/40404 仍兜底）。
+                onDelete:
+                    widget.currentUserId != null &&
+                        comment.author.userId == widget.currentUserId
+                    ? () => _deleteComment(comment)
+                    : null,
+              ),
+            ),
+          ..._commentsTail(),
+        ];
+    }
+  }
+
+  List<Widget> _commentsTail() {
+    switch (_commentsLoadMore) {
+      case LoadMorePhase.loading:
+        return const [
+          Padding(
+            padding: EdgeInsets.symmetric(vertical: 12),
+            child: Center(
+              child: SizedBox(
+                width: 24,
+                height: 24,
+                child: CircularProgressIndicator(
+                  strokeWidth: 2.5,
+                  color: AppColors.primary,
+                ),
+              ),
+            ),
+          ),
+        ];
+      case LoadMorePhase.error:
+        return [
+          Center(
+            child: TextButton(
+              onPressed: _loadMoreComments,
+              child: const Text('加载失败，点此重试'),
+            ),
+          ),
+        ];
+      case LoadMorePhase.idle:
+        return const [];
+    }
+  }
+
+  /// 底部固定输入条（05 §2.2）：surface 底 + 顶部 border 1px 分隔线 +
+  /// isDense 输入框 + filled 发送钮（空文本禁用；发送中 18 转圈锁尺寸）。
+  Widget _commentInputBar() {
+    final canSend = _commentController.text.trim().isNotEmpty && !_sending;
+    return Container(
+      decoration: const BoxDecoration(
+        color: AppColors.surface,
+        border: Border(top: BorderSide(color: AppColors.border)),
+      ),
+      padding: const EdgeInsets.fromLTRB(12, 10, 12, 10),
+      child: SafeArea(
+        top: false,
+        child: Row(
+          children: [
+            Expanded(
+              child: TextField(
+                controller: _commentController,
+                focusNode: _commentFocus,
+                textInputAction: TextInputAction.send,
+                onSubmitted: (_) => _submitComment(),
+                decoration: const InputDecoration(
+                  hintText: '写下你的评论…',
+                  isDense: true,
+                ),
+              ),
+            ),
+            const SizedBox(width: 8),
+            IconButton.filled(
+              tooltip: '发送评论',
+              onPressed: canSend ? _submitComment : null,
+              icon: _sending
+                  ? const SizedBox(
+                      width: 18,
+                      height: 18,
+                      child: CircularProgressIndicator(
+                        strokeWidth: 2,
+                        color: Colors.white,
+                      ),
+                    )
+                  : const Icon(Icons.send_rounded),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+/// 评论区首载骨架（05 §3.7：32 圆 + 圆角 16 矩形块高 72，装饰性占位）。
+class _CommentSkeleton extends StatelessWidget {
+  const _CommentSkeleton();
+
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Container(
+          width: 32,
+          height: 32,
+          decoration: const BoxDecoration(
+            shape: BoxShape.circle,
+            color: AppColors.surfaceTint,
+          ),
+        ),
+        const SizedBox(width: 10),
+        Expanded(
+          child: Container(
+            height: 72,
+            decoration: BoxDecoration(
+              color: AppColors.surfaceTint,
+              borderRadius: BorderRadius.circular(16),
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+}
+
+/// 全屏大图浏览（05 §2.2：黑底、双击缩放；03 号拍板 E 选内置
+/// InteractiveViewer，零依赖）。横滑翻页 + 右上「n/N」ink 胶囊 + 关闭钮；
+/// 下滑关闭与 InteractiveViewer 平移手势冲突，留待手势方案升级
+/// （photo_view 复评条件：体验不达标）。
+class _MediaGalleryPage extends StatefulWidget {
+  const _MediaGalleryPage({required this.urls, required this.initialIndex});
+
+  final List<String> urls;
+  final int initialIndex;
+
+  @override
+  State<_MediaGalleryPage> createState() => _MediaGalleryPageState();
+}
+
+class _MediaGalleryPageState extends State<_MediaGalleryPage> {
+  late final PageController _pageController = PageController(
+    initialPage: widget.initialIndex,
+  );
+  late int _index = widget.initialIndex;
+  final _viewerController = TransformationController();
+
+  @override
+  void dispose() {
+    _pageController.dispose();
+    _viewerController.dispose();
+    super.dispose();
+  }
+
+  void _toggleZoom(TapDownDetails details) {
+    if (_viewerController.value != Matrix4.identity()) {
+      _viewerController.value = Matrix4.identity();
+      return;
+    }
+    final position = details.localPosition;
+    // 双击点为中心放大 2.5 倍。
+    _viewerController.value = Matrix4.identity()
+      ..translateByDouble(-position.dx * 1.5, -position.dy * 1.5, 0, 1)
+      ..scaleByDouble(2.5, 2.5, 1, 1);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: Colors.black,
+      body: Stack(
+        children: [
+          PageView.builder(
+            controller: _pageController,
+            itemCount: widget.urls.length,
+            onPageChanged: (index) {
+              _viewerController.value = Matrix4.identity();
+              setState(() => _index = index);
+            },
+            itemBuilder: (context, index) {
+              return GestureDetector(
+                onDoubleTapDown: index == _index ? _toggleZoom : null,
+                onDoubleTap: () {}, // 消费事件，保留 onDoubleTapDown 的坐标。
+                child: InteractiveViewer(
+                  transformationController: index == _index
+                      ? _viewerController
+                      : null,
+                  maxScale: 4,
+                  child: Center(
+                    child: RemoteImage(
+                      url: widget.urls[index],
+                      fit: BoxFit.contain,
+                    ),
+                  ),
+                ),
+              );
+            },
+          ),
+          SafeArea(
+            child: Padding(
+              padding: const EdgeInsets.all(12),
+              child: Row(
+                children: [
+                  IconButton(
+                    tooltip: '关闭',
+                    onPressed: () => Navigator.of(context).pop(),
+                    icon: const Icon(Icons.close, color: Colors.white),
+                  ),
+                  const Spacer(),
+                  if (widget.urls.length > 1)
+                    Container(
+                      padding: const EdgeInsets.symmetric(
+                        horizontal: 10,
+                        vertical: 4,
+                      ),
+                      decoration: BoxDecoration(
+                        color: AppColors.ink,
+                        borderRadius: BorderRadius.circular(AppRadius.pill),
+                      ),
+                      child: Text(
+                        '${_index + 1}/${widget.urls.length}',
+                        style: const TextStyle(
+                          color: Colors.white,
+                          fontSize: 12,
+                          fontWeight: FontWeight.w700,
+                        ),
+                      ),
+                    ),
+                ],
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/features/profile/profile_page.dart

@@ -0,0 +1,176 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/data/demo_data.dart';
+import 'package:patbond_flutter/state/app_state.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+class ProfilePage extends StatelessWidget {
+  const ProfilePage({required this.appState, super.key, this.onLogout});
+
+  final AppState appState;
+
+  /// 真实退出登录入口；未接线时保持演示提示。
+  final Future<void> Function()? onLogout;
+
+  static const menuItems = [
+    (Icons.assignment_outlined, '我的预约订单', '查看进行中与历史服务'),
+    (Icons.bookmarks_outlined, '我的收藏与草稿', '已保存的宠物作品与攻略'),
+    (Icons.badge_outlined, '宠物健康卡包', '电子接种证与体检报告'),
+    (Icons.location_on_outlined, '地址与定位管理', '管理家庭住址与常用医院'),
+    (Icons.settings_outlined, '设置与关于', '隐私设置与版本信息'),
+  ];
+
+  void showDemoMessage(BuildContext context, String name) {
+    ScaffoldMessenger.of(
+      context,
+    ).showSnackBar(SnackBar(content: Text('「$name」功能为演示入口')));
+  }
+
+  Future<void> reset(BuildContext context) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('恢复演示数据'),
+        content: const Text('宠物资料、疫苗记录以及新增帖子都会恢复为初始状态。'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context, false),
+            child: const Text('取消'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.pop(context, true),
+            child: const Text('确认恢复'),
+          ),
+        ],
+      ),
+    );
+    if (confirmed == true) {
+      await appState.resetDemoData();
+      if (context.mounted) {
+        ScaffoldMessenger.of(
+          context,
+        ).showSnackBar(const SnackBar(content: Text('演示数据已恢复')));
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ListView(
+      padding: const EdgeInsets.fromLTRB(16, 16, 16, 30),
+      children: [
+        Container(
+          padding: const EdgeInsets.all(24),
+          decoration: BoxDecoration(
+            color: AppColors.ink,
+            borderRadius: BorderRadius.circular(30),
+          ),
+          child: Column(
+            children: [
+              RemoteImage(
+                url: userAvatar,
+                width: 82,
+                height: 82,
+                borderRadius: BorderRadius.circular(41),
+              ),
+              const SizedBox(height: 12),
+              const Text(
+                '萌宠新手（豆豆家长）',
+                style: TextStyle(
+                  color: Colors.white,
+                  fontSize: 17,
+                  fontWeight: FontWeight.w800,
+                ),
+              ),
+              const SizedBox(height: 5),
+              const Text(
+                'Patbond 社区创作达人',
+                style: TextStyle(color: AppColors.accent, fontSize: 12),
+              ),
+              const SizedBox(height: 20),
+              const Divider(color: Colors.white24),
+              const SizedBox(height: 10),
+              Row(
+                mainAxisAlignment: MainAxisAlignment.spaceAround,
+                children: [
+                  const _ProfileStat(value: '24', label: '关注我'),
+                  const _ProfileStat(value: '1.8k', label: '获赞'),
+                  _ProfileStat(
+                    // 「我的资料」头部整体仍是 demo 家具（M5 范围）：三项
+                    // 统计同源 demo 常量；AppState.posts 随 T3-17 退役后
+                    // 本项直读 demo 列表长度，不伪装真实数据。
+                    value: '${initialPosts.length}',
+                    label: '我的作品',
+                  ),
+                ],
+              ),
+            ],
+          ),
+        ),
+        const SizedBox(height: 18),
+        SectionCard(
+          padding: const EdgeInsets.symmetric(vertical: 6),
+          child: Column(
+            children: menuItems.map((item) {
+              return ListTile(
+                leading: CircleAvatar(
+                  backgroundColor: AppColors.surfaceTint,
+                  child: Icon(item.$1, color: AppColors.primary),
+                ),
+                title: Text(
+                  item.$2,
+                  style: const TextStyle(fontWeight: FontWeight.w700),
+                ),
+                subtitle: Text(item.$3),
+                trailing: const Icon(Icons.chevron_right),
+                onTap: () => showDemoMessage(context, item.$2),
+              );
+            }).toList(),
+          ),
+        ),
+        const SizedBox(height: 16),
+        OutlinedButton.icon(
+          style: OutlinedButton.styleFrom(
+            minimumSize: const Size.fromHeight(50),
+          ),
+          onPressed: () => reset(context),
+          icon: const Icon(Icons.restart_alt),
+          label: const Text('恢复演示数据'),
+        ),
+        const SizedBox(height: 10),
+        TextButton(
+          onPressed: onLogout ?? () => showDemoMessage(context, '退出登录'),
+          child: const Text('切换账号或退出登录'),
+        ),
+      ],
+    );
+  }
+}
+
+class _ProfileStat extends StatelessWidget {
+  const _ProfileStat({required this.value, required this.label});
+
+  final String value;
+  final String label;
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        Text(
+          value,
+          style: const TextStyle(
+            color: Colors.white,
+            fontSize: 17,
+            fontWeight: FontWeight.w900,
+          ),
+        ),
+        const SizedBox(height: 3),
+        Text(
+          label,
+          style: const TextStyle(color: Colors.white70, fontSize: 11),
+        ),
+      ],
+    );
+  }
+}

lib/features/services/services_page.dart

@@ -0,0 +1,291 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/data/demo_data.dart';
+import 'package:patbond_flutter/models/models.dart';
+import 'package:patbond_flutter/widgets/common.dart';
+
+class ServicesPage extends StatefulWidget {
+  const ServicesPage({
+    required this.showPersonal,
+    required this.locationWeather,
+    super.key,
+  });
+
+  final bool showPersonal;
+  final LocationWeather locationWeather;
+
+  @override
+  State<ServicesPage> createState() => _ServicesPageState();
+}
+
+class _ServicesPageState extends State<ServicesPage> {
+  late bool personal;
+  String query = '';
+  String filter = '全部';
+
+  @override
+  void initState() {
+    super.initState();
+    personal = widget.showPersonal;
+  }
+
+  @override
+  void didUpdateWidget(covariant ServicesPage oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.showPersonal != widget.showPersonal) {
+      personal = widget.showPersonal;
+    }
+  }
+
+  List<ServiceProviderModel> get providers {
+    final keyword = query.trim().toLowerCase();
+    var list = serviceProviders.where((provider) {
+      final matchesType = personal
+          ? provider.kind == ProviderKind.personal
+          : provider.kind != ProviderKind.personal;
+      final matchesQuery =
+          keyword.isEmpty ||
+          provider.name.toLowerCase().contains(keyword) ||
+          provider.description.toLowerCase().contains(keyword) ||
+          provider.tags.any((tag) => tag.toLowerCase().contains(keyword));
+      return matchesType && matchesQuery;
+    }).toList();
+
+    if (!personal) {
+      if (filter == '距离优先') {
+        list.sort(
+          (a, b) => double.parse(
+            a.distance.replaceAll('km', ''),
+          ).compareTo(double.parse(b.distance.replaceAll('km', ''))),
+        );
+      } else if (filter == '24H急诊') {
+        list = list.where((item) => item.tags.contains('24H急诊')).toList();
+      } else if (filter == '美容洗护') {
+        list = list
+            .where((item) => item.kind == ProviderKind.grooming)
+            .toList();
+      }
+    }
+    return list;
+  }
+
+  Future<void> book(ServiceProviderModel provider) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('确认预约'),
+        content: Text('预约 ${provider.name}\n服务价格：¥${provider.price} 起'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context, false),
+            child: const Text('取消'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.pop(context, true),
+            child: const Text('确认'),
+          ),
+        ],
+      ),
+    );
+    if (confirmed == true && mounted) {
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text('已提交「${provider.name}」预约（演示）')));
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ListView(
+      padding: const EdgeInsets.fromLTRB(16, 12, 16, 28),
+      children: [
+        SegmentedButton<bool>(
+          segments: const [
+            ButtonSegment(
+              value: false,
+              icon: Icon(Icons.apartment_outlined),
+              label: Text('专业机构'),
+            ),
+            ButtonSegment(
+              value: true,
+              icon: Icon(Icons.person_pin_circle_outlined),
+              label: Text('个人服务'),
+            ),
+          ],
+          selected: {personal},
+          showSelectedIcon: false,
+          onSelectionChanged: (value) => setState(() {
+            personal = value.first;
+            filter = '全部';
+          }),
+        ),
+        const SizedBox(height: 10),
+        Row(
+          children: [
+            const Icon(
+              Icons.near_me_outlined,
+              size: 17,
+              color: AppColors.primary,
+            ),
+            const SizedBox(width: 5),
+            Text(
+              '正在展示 ${widget.locationWeather.displayArea} 附近的服务',
+              style: Theme.of(context).textTheme.bodySmall,
+            ),
+          ],
+        ),
+        const SizedBox(height: 14),
+        TextField(
+          onChanged: (value) => setState(() => query = value),
+          decoration: InputDecoration(
+            hintText: personal ? '搜索遛狗、寄养或上门喂养…' : '搜索宠物医院、美容或服务…',
+            prefixIcon: const Icon(Icons.search),
+            suffixIcon: IconButton(
+              tooltip: '筛选',
+              onPressed: () => ScaffoldMessenger.of(
+                context,
+              ).showSnackBar(const SnackBar(content: Text('可使用下方快捷筛选条件'))),
+              icon: const Icon(Icons.tune),
+            ),
+          ),
+        ),
+        if (!personal) ...[
+          const SizedBox(height: 12),
+          SingleChildScrollView(
+            scrollDirection: Axis.horizontal,
+            child: Row(
+              children: ['全部', '距离优先', '24H急诊', '美容洗护']
+                  .map(
+                    (value) => Padding(
+                      padding: const EdgeInsets.only(right: 8),
+                      child: ChoiceChip(
+                        label: Text(value),
+                        selected: filter == value,
+                        onSelected: (_) => setState(() => filter = value),
+                      ),
+                    ),
+                  )
+                  .toList(),
+            ),
+          ),
+        ],
+        const SizedBox(height: 16),
+        if (providers.isEmpty)
+          const EmptyState(message: '没有找到符合条件的服务')
+        else
+          ...providers.map(
+            (provider) => Padding(
+              padding: const EdgeInsets.only(bottom: 14),
+              child: _ServiceCard(
+                provider: provider,
+                onBook: () => book(provider),
+              ),
+            ),
+          ),
+      ],
+    );
+  }
+}
+
+class _ServiceCard extends StatelessWidget {
+  const _ServiceCard({required this.provider, required this.onBook});
+
+  final ServiceProviderModel provider;
+  final VoidCallback onBook;
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      clipBehavior: Clip.antiAlias,
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Stack(
+            children: [
+              AspectRatio(
+                aspectRatio: 16 / 7,
+                child: RemoteImage(url: provider.image),
+              ),
+              if (provider.verified)
+                const Positioned(
+                  left: 12,
+                  top: 12,
+                  child: TagPill('认证服务', color: AppColors.success),
+                ),
+              Positioned(
+                right: 12,
+                bottom: 10,
+                child: DecoratedBox(
+                  decoration: BoxDecoration(
+                    color: Colors.white.withAlpha(235),
+                    borderRadius: BorderRadius.circular(12),
+                  ),
+                  child: Padding(
+                    padding: const EdgeInsets.symmetric(
+                      horizontal: 9,
+                      vertical: 5,
+                    ),
+                    child: Text(
+                      '⭐ ${provider.rating}',
+                      style: const TextStyle(fontWeight: FontWeight.w800),
+                    ),
+                  ),
+                ),
+              ),
+            ],
+          ),
+          Padding(
+            padding: const EdgeInsets.all(16),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Row(
+                  children: [
+                    Expanded(
+                      child: Text(
+                        provider.name,
+                        style: Theme.of(context).textTheme.titleMedium,
+                      ),
+                    ),
+                    Text(
+                      provider.distance,
+                      style: Theme.of(context).textTheme.bodySmall,
+                    ),
+                  ],
+                ),
+                const SizedBox(height: 6),
+                Text(provider.description),
+                const SizedBox(height: 10),
+                Wrap(
+                  spacing: 7,
+                  runSpacing: 7,
+                  children: provider.tags.map(TagPill.new).toList(),
+                ),
+                const SizedBox(height: 14),
+                Row(
+                  children: [
+                    Text(
+                      '¥${provider.price}',
+                      style: const TextStyle(
+                        color: AppColors.primary,
+                        fontSize: 20,
+                        fontWeight: FontWeight.w900,
+                      ),
+                    ),
+                    const Text(' 起', style: TextStyle(color: AppColors.muted)),
+                    const Spacer(),
+                    FilledButton.icon(
+                      onPressed: onBook,
+                      icon: const Icon(Icons.calendar_month_outlined, size: 18),
+                      label: const Text('立即预约'),
+                    ),
+                  ],
+                ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/models/models.dart

@@ -0,0 +1,297 @@
+enum PetGender { male, female }
+
+enum WeatherCondition { sunny, cloudy, rainy, overcast, snow }
+
+class LocationWeather {
+  const LocationWeather({
+    required this.city,
+    required this.district,
+    required this.temperature,
+    required this.condition,
+    required this.conditionText,
+    required this.highTemperature,
+    required this.lowTemperature,
+    required this.humidity,
+  });
+
+  final String city;
+  final String district;
+  final int temperature;
+  final WeatherCondition condition;
+  final String conditionText;
+  final int highTemperature;
+  final int lowTemperature;
+  final int humidity;
+
+  String get displayArea => district.isEmpty ? city : '$city · $district';
+
+  String get petAdvice {
+    if (condition == WeatherCondition.rainy) {
+      return '今天有雨，外出记得带雨具并及时擦干脚掌。';
+    }
+    if (condition == WeatherCondition.snow) {
+      return '天气寒冷，短毛宠物外出记得做好保暖。';
+    }
+    if (temperature >= 30) {
+      return '今天较热，建议清晨或傍晚带毛孩子出门。';
+    }
+    if (temperature <= 8) {
+      return '气温偏低，散步时间不宜过长，注意保暖。';
+    }
+    if (condition == WeatherCondition.sunny) {
+      return '天气不错，适合和毛孩子一起去户外散步。';
+    }
+    return '体感舒适，适合安排一次轻松的户外活动。';
+  }
+
+  factory LocationWeather.fromJson(Map<String, dynamic> json) {
+    return LocationWeather(
+      city: json['city'] as String,
+      district: json['district'] as String? ?? '',
+      temperature: json['temperature'] as int,
+      condition: WeatherCondition.values.firstWhere(
+        (value) => value.name == json['condition'],
+        orElse: () => WeatherCondition.sunny,
+      ),
+      conditionText: json['conditionText'] as String,
+      highTemperature: json['highTemperature'] as int,
+      lowTemperature: json['lowTemperature'] as int,
+      humidity: json['humidity'] as int,
+    );
+  }
+
+  Map<String, dynamic> toJson() => {
+    'city': city,
+    'district': district,
+    'temperature': temperature,
+    'condition': condition.name,
+    'conditionText': conditionText,
+    'highTemperature': highTemperature,
+    'lowTemperature': lowTemperature,
+    'humidity': humidity,
+  };
+}
+
+class PetProfile {
+  const PetProfile({
+    required this.name,
+    required this.breed,
+    required this.gender,
+    required this.birthday,
+    required this.weight,
+    required this.tags,
+    required this.avatarUrl,
+  });
+
+  final String name;
+  final String breed;
+  final PetGender gender;
+  final String birthday;
+  final double weight;
+  final List<String> tags;
+  final String avatarUrl;
+
+  PetProfile copyWith({
+    String? name,
+    String? breed,
+    PetGender? gender,
+    String? birthday,
+    double? weight,
+    List<String>? tags,
+    String? avatarUrl,
+  }) {
+    return PetProfile(
+      name: name ?? this.name,
+      breed: breed ?? this.breed,
+      gender: gender ?? this.gender,
+      birthday: birthday ?? this.birthday,
+      weight: weight ?? this.weight,
+      tags: tags ?? this.tags,
+      avatarUrl: avatarUrl ?? this.avatarUrl,
+    );
+  }
+
+  factory PetProfile.fromJson(Map<String, dynamic> json) {
+    return PetProfile(
+      name: json['name'] as String,
+      breed: json['breed'] as String,
+      gender: json['gender'] == 'female' ? PetGender.female : PetGender.male,
+      birthday: json['birthday'] as String,
+      weight: (json['weight'] as num).toDouble(),
+      tags: List<String>.from(json['tags'] as List),
+      avatarUrl: json['avatarUrl'] as String,
+    );
+  }
+
+  Map<String, dynamic> toJson() => {
+    'name': name,
+    'breed': breed,
+    'gender': gender.name,
+    'birthday': birthday,
+    'weight': weight,
+    'tags': tags,
+    'avatarUrl': avatarUrl,
+  };
+}
+
+class CommentModel {
+  const CommentModel({
+    required this.id,
+    required this.authorName,
+    required this.authorAvatar,
+    required this.content,
+    required this.time,
+  });
+
+  final String id;
+  final String authorName;
+  final String authorAvatar;
+  final String content;
+  final String time;
+
+  factory CommentModel.fromJson(Map<String, dynamic> json) {
+    return CommentModel(
+      id: json['id'] as String,
+      authorName: json['authorName'] as String,
+      authorAvatar: json['authorAvatar'] as String,
+      content: json['content'] as String,
+      time: json['time'] as String,
+    );
+  }
+
+  Map<String, dynamic> toJson() => {
+    'id': id,
+    'authorName': authorName,
+    'authorAvatar': authorAvatar,
+    'content': content,
+    'time': time,
+  };
+}
+
+class PostModel {
+  const PostModel({
+    required this.id,
+    required this.authorName,
+    required this.authorAvatar,
+    required this.time,
+    required this.breedTag,
+    required this.content,
+    required this.mainImage,
+    required this.likes,
+    required this.tags,
+    required this.comments,
+    this.hasLiked = false,
+    this.hasBookmarked = false,
+  });
+
+  final String id;
+  final String authorName;
+  final String authorAvatar;
+  final String time;
+  final String breedTag;
+  final String content;
+  final String mainImage;
+  final int likes;
+  final List<String> tags;
+  final List<CommentModel> comments;
+  final bool hasLiked;
+  final bool hasBookmarked;
+
+  PostModel copyWith({
+    int? likes,
+    List<CommentModel>? comments,
+    bool? hasLiked,
+    bool? hasBookmarked,
+  }) {
+    return PostModel(
+      id: id,
+      authorName: authorName,
+      authorAvatar: authorAvatar,
+      time: time,
+      breedTag: breedTag,
+      content: content,
+      mainImage: mainImage,
+      likes: likes ?? this.likes,
+      tags: tags,
+      comments: comments ?? this.comments,
+      hasLiked: hasLiked ?? this.hasLiked,
+      hasBookmarked: hasBookmarked ?? this.hasBookmarked,
+    );
+  }
+
+  factory PostModel.fromJson(Map<String, dynamic> json) {
+    return PostModel(
+      id: json['id'] as String,
+      authorName: json['authorName'] as String,
+      authorAvatar: json['authorAvatar'] as String,
+      time: json['time'] as String,
+      breedTag: json['breedTag'] as String,
+      content: json['content'] as String,
+      mainImage: json['mainImage'] as String,
+      likes: json['likes'] as int,
+      tags: List<String>.from(json['tags'] as List),
+      comments: (json['comments'] as List)
+          .map((item) => CommentModel.fromJson(item as Map<String, dynamic>))
+          .toList(),
+      hasLiked: json['hasLiked'] as bool? ?? false,
+      hasBookmarked: json['hasBookmarked'] as bool? ?? false,
+    );
+  }
+
+  Map<String, dynamic> toJson() => {
+    'id': id,
+    'authorName': authorName,
+    'authorAvatar': authorAvatar,
+    'time': time,
+    'breedTag': breedTag,
+    'content': content,
+    'mainImage': mainImage,
+    'likes': likes,
+    'tags': tags,
+    'comments': comments.map((comment) => comment.toJson()).toList(),
+    'hasLiked': hasLiked,
+    'hasBookmarked': hasBookmarked,
+  };
+}
+
+enum ProviderKind { hospital, grooming, personal }
+
+class ServiceProviderModel {
+  const ServiceProviderModel({
+    required this.id,
+    required this.kind,
+    required this.name,
+    required this.distance,
+    required this.rating,
+    required this.description,
+    required this.tags,
+    required this.price,
+    required this.image,
+    this.verified = false,
+  });
+
+  final String id;
+  final ProviderKind kind;
+  final String name;
+  final String distance;
+  final double rating;
+  final String description;
+  final List<String> tags;
+  final int price;
+  final String image;
+  final bool verified;
+}
+
+class CreationStyle {
+  const CreationStyle({
+    required this.id,
+    required this.title,
+    required this.subtitle,
+    required this.image,
+  });
+
+  final String id;
+  final String title;
+  final String subtitle;
+  final String image;
+}

lib/state/app_state.dart

@@ -0,0 +1,72 @@
+import 'dart:convert';
+
+import 'package:flutter/foundation.dart';
+import 'package:patbond_flutter/data/demo_data.dart';
+import 'package:patbond_flutter/models/models.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class AppState extends ChangeNotifier {
+  static const _petKey = 'patbond_pet';
+  static const _locationWeatherKey = 'patbond_location_weather';
+
+  /// 首页问候卡 / 创作页 / 主壳头像仍消费的 demo 宠物（T2-12 起档案
+  /// Tab 已切独立 pets feature 真实数据；此 demo 随后续工单收敛）。
+  ///
+  /// **demo 帖子列表已于 T3-17 退役**：Feed / 详情页自 T3-14/15 起消费
+  /// community 真实数据，发布页自 T3-17 起走真实两步上传 + 建草稿/迁移
+  /// 发布，`posts` / `publishPost` / `updatePost` 与其
+  /// shared_preferences 持久化一并删除（03 号评估 §1.1 判定）。
+  PetProfile pet = initialPet;
+  LocationWeather locationWeather = initialLocationWeather;
+  bool isReady = false;
+
+  Future<void> load() async {
+    try {
+      final preferences = await SharedPreferences.getInstance();
+      final savedPet = preferences.getString(_petKey);
+      final savedLocationWeather = preferences.getString(_locationWeatherKey);
+
+      if (savedPet != null) {
+        pet = PetProfile.fromJson(jsonDecode(savedPet) as Map<String, dynamic>);
+      }
+      if (savedLocationWeather != null) {
+        locationWeather = LocationWeather.fromJson(
+          jsonDecode(savedLocationWeather) as Map<String, dynamic>,
+        );
+      }
+    } catch (error, stackTrace) {
+      debugPrint('读取本地数据失败，已使用默认数据：$error\n$stackTrace');
+      pet = initialPet;
+      locationWeather = initialLocationWeather;
+    } finally {
+      isReady = true;
+      notifyListeners();
+    }
+  }
+
+  Future<void> updateLocationWeather(LocationWeather value) async {
+    locationWeather = value;
+    notifyListeners();
+    await _save(_locationWeatherKey, value.toJson());
+  }
+
+  Future<void> resetDemoData() async {
+    pet = initialPet;
+    locationWeather = initialLocationWeather;
+    notifyListeners();
+    final preferences = await SharedPreferences.getInstance();
+    await Future.wait([
+      preferences.remove(_petKey),
+      preferences.remove(_locationWeatherKey),
+    ]);
+  }
+
+  Future<void> _save(String key, Object value) async {
+    try {
+      final preferences = await SharedPreferences.getInstance();
+      await preferences.setString(key, jsonEncode(value));
+    } catch (error, stackTrace) {
+      debugPrint('保存本地数据失败：$error\n$stackTrace');
+    }
+  }
+}

lib/widgets/common.dart

@@ -0,0 +1,156 @@
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/network/signed_network_image.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+
+class RemoteImage extends StatelessWidget {
+  const RemoteImage({
+    required this.url,
+    super.key,
+    this.width,
+    this.height,
+    this.fit = BoxFit.cover,
+    this.borderRadius = BorderRadius.zero,
+  });
+
+  final String url;
+  final double? width;
+  final double? height;
+  final BoxFit fit;
+  final BorderRadius borderRadius;
+
+  @override
+  Widget build(BuildContext context) {
+    return ClipRRect(
+      borderRadius: borderRadius,
+      // 缓存 key 剥离预签名参数（T3-14）：媒体 URL 每次响应现签，
+      // 按完整 URL 缓存会同图重复下载。
+      child: Image(
+        image: SignedNetworkImage(url),
+        width: width,
+        height: height,
+        fit: fit,
+        loadingBuilder: (context, child, progress) {
+          if (progress == null) return child;
+          return ColoredBox(
+            color: AppColors.surfaceTint,
+            child: SizedBox(
+              width: width,
+              height: height,
+              child: const Center(
+                child: CircularProgressIndicator(strokeWidth: 2),
+              ),
+            ),
+          );
+        },
+        errorBuilder: (context, error, stackTrace) {
+          return ColoredBox(
+            color: AppColors.surfaceTint,
+            child: SizedBox(
+              width: width,
+              height: height,
+              child: const Center(
+                child: Icon(Icons.pets, color: AppColors.muted, size: 34),
+              ),
+            ),
+          );
+        },
+      ),
+    );
+  }
+}
+
+class SectionCard extends StatelessWidget {
+  const SectionCard({required this.child, super.key, this.padding});
+
+  final Widget child;
+  final EdgeInsetsGeometry? padding;
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      child: Padding(
+        padding: padding ?? const EdgeInsets.all(18),
+        child: child,
+      ),
+    );
+  }
+}
+
+/// 胶囊标签：底色为 [color] 的 8% 淡染（`withAlpha(20)`），文字用深变体。
+///
+/// DEBT-1 偿还（05 号规范 §5.3）：原实现文字直接用 [color]，在自身淡底
+/// 上仅 1.67–2.55:1 不达 WCAG AA；现文字色按内置映射取深变体
+/// （primary→primaryDark 8.74:1、success→successInk 7.39:1、
+/// accent→accentDark 7.07:1、error→errorDark 5.78:1、未命中→ink 兜底），
+/// 或经 [inkColor] 显式指定。既有调用零参数变更、仅视觉变深。
+class TagPill extends StatelessWidget {
+  const TagPill(
+    this.label, {
+    super.key,
+    this.color = AppColors.primary,
+    this.inkColor,
+  });
+
+  final String label;
+
+  /// 底色基色（淡染 8% 后作背景）。
+  final Color color;
+
+  /// 文字色；缺省按 [color] 查内置深变体映射。
+  final Color? inkColor;
+
+  /// 内置深变体映射（Color 重载 == 不能作 const map 键，用查表函数）。
+  static Color _defaultInkFor(Color color) {
+    if (color == AppColors.primary) return AppColors.primaryDark;
+    if (color == AppColors.success) return AppColors.successInk;
+    if (color == AppColors.accent) return AppColors.accentDark;
+    if (color == AppColors.error) return AppColors.errorDark;
+    return AppColors.ink;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final effectiveInk = inkColor ?? _defaultInkFor(color);
+    return DecoratedBox(
+      decoration: BoxDecoration(
+        color: color.withAlpha(20),
+        borderRadius: BorderRadius.circular(99),
+      ),
+      child: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
+        child: Text(
+          label,
+          style: TextStyle(
+            color: effectiveInk,
+            fontSize: 11,
+            fontWeight: FontWeight.w700,
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class EmptyState extends StatelessWidget {
+  const EmptyState({required this.message, super.key});
+
+  final String message;
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 48),
+      child: Column(
+        children: [
+          const Icon(
+            Icons.search_off_rounded,
+            size: 42,
+            color: AppColors.muted,
+          ),
+          const SizedBox(height: 12),
+          Text(message, style: Theme.of(context).textTheme.bodySmall),
+        ],
+      ),
+    );
+  }
+}

linux/flutter/generated_plugin_registrant.cc

@@ -6,6 +6,14 @@
 
 #include "generated_plugin_registrant.h"
 
+#include <file_selector_linux/file_selector_plugin.h>
+#include <flutter_secure_storage_linux/flutter_secure_storage_linux_plugin.h>
 
 void fl_register_plugins(FlPluginRegistry* registry) {
+  g_autoptr(FlPluginRegistrar) file_selector_linux_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "FileSelectorPlugin");
+  file_selector_plugin_register_with_registrar(file_selector_linux_registrar);
+  g_autoptr(FlPluginRegistrar) flutter_secure_storage_linux_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "FlutterSecureStorageLinuxPlugin");
+  flutter_secure_storage_linux_plugin_register_with_registrar(flutter_secure_storage_linux_registrar);
 }

linux/flutter/generated_plugins.cmake

@@ -3,9 +3,12 @@
 #
 
 list(APPEND FLUTTER_PLUGIN_LIST
+  file_selector_linux
+  flutter_secure_storage_linux
 )
 
 list(APPEND FLUTTER_FFI_PLUGIN_LIST
+  jni
 )
 
 set(PLUGIN_BUNDLED_LIBRARIES)

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,6 +5,16 @@
 import FlutterMacOS
 import Foundation
 
+import file_selector_macos
+import flutter_image_compress_macos
+import flutter_secure_storage_darwin
+import package_info_plus
+import shared_preferences_foundation
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  FileSelectorPlugin.register(with: registry.registrar(forPlugin: "FileSelectorPlugin"))
+  FlutterImageCompressMacosPlugin.register(with: registry.registrar(forPlugin: "FlutterImageCompressMacosPlugin"))
+  FlutterSecureStorageDarwinPlugin.register(with: registry.registrar(forPlugin: "FlutterSecureStorageDarwinPlugin"))
+  FPPPackageInfoPlusPlugin.register(with: registry.registrar(forPlugin: "FPPPackageInfoPlusPlugin"))
+  SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
 }

pubspec.lock

@@ -1,6 +1,14 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  args:
+    dependency: transitive
+    description:
+      name: args
+      sha256: d0481093c50b1da8910eb0bb301626d4d8eb7284aa739614d2b394ee09e3ea04
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
   async:
     dependency: transitive
     description:
@@ -33,6 +41,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.1.2"
+  code_assets:
+    dependency: transitive
+    description:
+      name: code_assets
+      sha256: bf394f466ba9205f1812a0433b392d6af280f155f56651eda7c18cc32ed493b8
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
   collection:
     dependency: transitive
     description:
@@ -41,6 +57,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.19.1"
+  cross_file:
+    dependency: transitive
+    description:
+      name: cross_file
+      sha256: f141ea4f277af142a0356955707f6556f37b03947d39d55585981a06ca437bd6
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.5+5"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: c8ea0233063ba03258fbcf2ca4d6dadfefe14f02fab57702265467a19f27fadf
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.7"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -49,19 +81,152 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.9"
-  fake_async:
+  dio:
+    dependency: "direct main"
+    description:
+      name: dio
+      sha256: "852ec3b48cc431ac04fff978413c541502b67ffc3e26921e74e3d994694192c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.11.1"
+  dio_web_adapter:
     dependency: transitive
+    description:
+      name: dio_web_adapter
+      sha256: "3a1b2cd7be71086f38504956e3ebcd2837288d231ff454bafa78021244102bfc"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.2"
+  fake_async:
+    dependency: "direct dev"
     description:
       name: fake_async
       sha256: "5368f224a74523e8d2e7399ea1638b37aecfca824a3cc4dfdf77bf1fa905ac44"
       url: "https://pub.dev"
     source: hosted
     version: "1.3.3"
+  ffi:
+    dependency: transitive
+    description:
+      name: ffi
+      sha256: "6d7fd89431262d8f3125e81b50d3847a091d846eafcd4fdb88dd06f36d705a45"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  ffi_leak_tracker:
+    dependency: transitive
+    description:
+      name: ffi_leak_tracker
+      sha256: "4093d4ef9ca06ffe2786e73bfb25e22aa92112b9bb4ec941f11e3e6b61489a97"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.2"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      sha256: a3b4f84adafef897088c160faf7dfffb7696046cb13ae90b508c2cbc95d3b8d4
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.1"
+  file_selector_linux:
+    dependency: transitive
+    description:
+      name: file_selector_linux
+      sha256: da76400e7872ce7637ffdce12749ec24169c25f6195c28372208e65a24bcd2ab
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.4+1"
+  file_selector_macos:
+    dependency: transitive
+    description:
+      name: file_selector_macos
+      sha256: d57c62362766b5e7ae739448650b66c6aab7a68ba7ecc65e04018652645ae0f4
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.5+1"
+  file_selector_platform_interface:
+    dependency: transitive
+    description:
+      name: file_selector_platform_interface
+      sha256: "35e0bd61ebcdb91a3505813b055b09b79dfdc7d0aee9c09a7ba59ae4bb13dc85"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
+  file_selector_windows:
+    dependency: transitive
+    description:
+      name: file_selector_windows
+      sha256: fbefc5fb92c6d3cbe8d284a2cd971b593bb07d2cd6da8557b81a862250b4acec
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.3+6"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      sha256: b6dc7065e46c974bc7c5f143080a6764ec7a4be6da1285ececdc37be96de53be
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
   flutter:
     dependency: "direct main"
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_driver:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_image_compress:
+    dependency: "direct main"
+    description:
+      name: flutter_image_compress
+      sha256: "98a48c05a7add6869c6838270e862124a4d571f9dd5d0cf209ed03a71b20ea84"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.1"
+  flutter_image_compress_common:
+    dependency: transitive
+    description:
+      name: flutter_image_compress_common
+      sha256: "76869e4d5f3d65f3431e7edff0b2d8ad1eea68b49c6a37772fdb1ae6016da9ed"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  flutter_image_compress_macos:
+    dependency: transitive
+    description:
+      name: flutter_image_compress_macos
+      sha256: "0d2a842d2e544828fb32bda16dcfccb3149107df568898a4936d78232e486847"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  flutter_image_compress_ohos:
+    dependency: transitive
+    description:
+      name: flutter_image_compress_ohos
+      sha256: "1491bb7bcfdf59e3b127c263c116cfbf8ed3afade6e7fa691d9622e838ed7e48"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.0.3+1"
+  flutter_image_compress_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_image_compress_platform_interface
+      sha256: bbefb7967bda565004fdabdb3300dcbfb40c7ef8402675d23206e5bddc358178
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  flutter_image_compress_web:
+    dependency: transitive
+    description:
+      name: flutter_image_compress_web
+      sha256: "91cc58e091a1e09c7683d216d579e2b964119a8527fc43b64dfdb00f1acc94ec"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.5+1"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -70,11 +235,194 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.0.0"
+  flutter_plugin_android_lifecycle:
+    dependency: transitive
+    description:
+      name: flutter_plugin_android_lifecycle
+      sha256: "3854fe5e3bff0b113c658f260b90c95dea17c92db0f2addeac2e343dd9969785"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.35"
+  flutter_secure_storage:
+    dependency: "direct main"
+    description:
+      name: flutter_secure_storage
+      sha256: "15e8c8fe269fdf7d469b23008ab3df521c8b826ed345820532364c31bdebace6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "11.0.0"
+  flutter_secure_storage_darwin:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_darwin
+      sha256: ac6d76a752de0cd738334eb4b21743fc4943f449f5b6e308f18838b048c02ac0
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.4.0"
+  flutter_secure_storage_linux:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_linux
+      sha256: "76fa9c841b3b1619fc5b5bc36efc7d158fa2356f223b6caeb1d0c80a54168546"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  flutter_secure_storage_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_platform_interface
+      sha256: "788060052712555182aba55ecb5f8b6e5cb9cfe8f776c83249a61fe3ce877db4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.3"
+  flutter_secure_storage_web:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_web
+      sha256: "073a62b3aeb866ab4ce795f960413948e51e5a42a9b0c8333b6daf5bb3208a1c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
+  flutter_secure_storage_windows:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_windows
+      sha256: "471951813a97006d899db4948acc654a4f28c440083ea08178935ce20b173ec1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.2.2"
   flutter_test:
     dependency: "direct dev"
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_web_plugins:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  fuchsia_remote_debug_protocol:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  hooks:
+    dependency: transitive
+    description:
+      name: hooks
+      sha256: "9a62a50b50b769a737bc0a8ff381f333529df3ab746b2f6b02e83760231455ba"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.2"
+  http:
+    dependency: transitive
+    description:
+      name: http
+      sha256: "87721a4a50b19c7f1d49001e51409bddc46303966ce89a65af4f4e6004896412"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.6.0"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.2"
+  image_picker:
+    dependency: "direct main"
+    description:
+      name: image_picker
+      sha256: d8402284df184bc05f4a2210c6c23983b0720f4cd87cbd05c5390a78af602667
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.3"
+  image_picker_android:
+    dependency: transitive
+    description:
+      name: image_picker_android
+      sha256: "1c0c38790306fda4ed774095620444333e56a2b6bc8fc98f3a35c9398781cf54"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.8.13+22"
+  image_picker_for_web:
+    dependency: transitive
+    description:
+      name: image_picker_for_web
+      sha256: "66257a3191ab360d23a55c8241c91a6e329d31e94efa7be9cf7a212e65850214"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.1"
+  image_picker_ios:
+    dependency: transitive
+    description:
+      name: image_picker_ios
+      sha256: ee3885b6fcd71958fbc79770dd194c63371439d536d69c47b279171a486482ae
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.8.13+7"
+  image_picker_linux:
+    dependency: transitive
+    description:
+      name: image_picker_linux
+      sha256: "1f81c5f2046b9ab724f85523e4af65be1d47b038160a8c8deed909762c308ed4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2"
+  image_picker_macos:
+    dependency: transitive
+    description:
+      name: image_picker_macos
+      sha256: "86f0f15a309de7e1a552c12df9ce5b59fe927e71385329355aec4776c6a8ec91"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2+1"
+  image_picker_platform_interface:
+    dependency: transitive
+    description:
+      name: image_picker_platform_interface
+      sha256: "567e056716333a1647c64bb6bd873cff7622233a5c3f694be28a583d4715690c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.11.1"
+  image_picker_windows:
+    dependency: transitive
+    description:
+      name: image_picker_windows
+      sha256: d248c86554a72b5495a31c56f060cf73a41c7ff541689327b1a7dbccc33adfae
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2"
+  integration_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  jni:
+    dependency: transitive
+    description:
+      name: jni
+      sha256: f038e58b4dc2c9037f50e233175086337e0b305e356d28211bf55f21c504cbd3
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.3"
+  jni_flutter:
+    dependency: transitive
+    description:
+      name: jni_flutter
+      sha256: b2310cdd4c18c65c081ab141a41efa94aa26c65431803703ece51996f174f351
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.3"
+  jni_util:
+    dependency: transitive
+    description:
+      name: jni_util
+      sha256: "1ba86da04a5f2bf18fde2edb235587e70c5b0fc5bd4ba955f46b00942c3fc35f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
   leak_tracker:
     dependency: transitive
     description:
@@ -107,6 +455,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.1.0"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: c8245ada5f1717ed44271ed1c26b8ce85ca3228fd2ffdb75468ab01979309d61
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
   matcher:
     dependency: transitive
     description:
@@ -131,6 +487,46 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.18.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      sha256: bd47de35f07e27267e69c8c8b22edf9473bfee170a60d60fcc93730c5144b7f6
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
+  objective_c:
+    dependency: transitive
+    description:
+      name: objective_c
+      sha256: b7fb95a6d9a4f009edd63dc5ac69f07420b23a16161c6dd8660290b59c602e8e
+      url: "https://pub.dev"
+    source: hosted
+    version: "9.5.0"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      sha256: ffcf4cf3d6c0b74ac43708d9f56625506e8a68aa935abe9d267a7330f320eb5d
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.0"
+  package_info_plus:
+    dependency: "direct main"
+    description:
+      name: package_info_plus
+      sha256: "127e1751e37ffb2ff4658beeaca77bad0c27bf5f932bd3a501c2296926d4b481"
+      url: "https://pub.dev"
+    source: hosted
+    version: "10.2.1"
+  package_info_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: package_info_plus_platform_interface
+      sha256: db762cb2f4f25ee60fb6359773861b0f199e00b90d237bd85a76a1e806b46ef4
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.0"
   path:
     dependency: transitive
     description:
@@ -139,6 +535,150 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.9.1"
+  path_provider:
+    dependency: transitive
+    description:
+      name: path_provider
+      sha256: a7f4874f987173da295a61c181b8ee71dab59b332a486b391babf26a1b884825
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.6"
+  path_provider_android:
+    dependency: transitive
+    description:
+      name: path_provider_android
+      sha256: "69cbd515a62b94d32a7944f086b2f82b4ac40a1d45bebfc00813a430ab2dabcd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.1"
+  path_provider_foundation:
+    dependency: transitive
+    description:
+      name: path_provider_foundation
+      sha256: "2a376b7d6392d80cd3705782d2caa734ca4727776db0b6ec36ef3f1855197699"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.6.0"
+  path_provider_linux:
+    dependency: transitive
+    description:
+      name: path_provider_linux
+      sha256: "58c2005f147315b11e9b4a7bc889cd5203e250cba8e3f012dae259b4972b5c16"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.2"
+  path_provider_platform_interface:
+    dependency: transitive
+    description:
+      name: path_provider_platform_interface
+      sha256: "484838772624c3a4b94f1e44a3e19897fee738f2d5c4ce448443b0417f7c9dda"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.3"
+  path_provider_windows:
+    dependency: transitive
+    description:
+      name: path_provider_windows
+      sha256: bd6f00dbd873bfb70d0761682da2b3a2c2fccc2b9e84c495821639601d81afe7
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.0"
+  platform:
+    dependency: transitive
+    description:
+      name: platform
+      sha256: "5d6b1b0036a5f331ebc77c850ebc8506cbc1e9416c27e59b439f917a902a4984"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.6"
+  plugin_platform_interface:
+    dependency: transitive
+    description:
+      name: plugin_platform_interface
+      sha256: "4820fbfdb9478b1ebae27888254d445073732dae3d6ea81f0b7e06d5dedc3f02"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.8"
+  process:
+    dependency: transitive
+    description:
+      name: process
+      sha256: "4242ba3508d37e01808bdf71ad1d5bb93a8d671bf2e7450e6b1b353fb0808891"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.0.6"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "261236774e8b1d69cfc6b9eabbc96c40f25e7a2d6b171f3385d4f65d5734fb24"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.1"
+  record_use:
+    dependency: transitive
+    description:
+      name: record_use
+      sha256: "2551bd8eecfe95d14ae75f6021ad0248be5c27f138c2ec12fcb52b500b3ba1ed"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.0"
+  shared_preferences:
+    dependency: "direct main"
+    description:
+      name: shared_preferences
+      sha256: c3025c5534b01739267eb7d76959bbc25a6d10f6988e1c2a3036940133dd10bf
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.5"
+  shared_preferences_android:
+    dependency: transitive
+    description:
+      name: shared_preferences_android
+      sha256: "0634e64bd719f89c012f392938e173521f535d3ecaf66558fa94a056d22b5cc7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.27"
+  shared_preferences_foundation:
+    dependency: transitive
+    description:
+      name: shared_preferences_foundation
+      sha256: "4e7eaffc2b17ba398759f1151415869a34771ba11ebbccd1b0145472a619a64f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.6"
+  shared_preferences_linux:
+    dependency: transitive
+    description:
+      name: shared_preferences_linux
+      sha256: "580abfd40f415611503cae30adf626e6656dfb2f0cee8f465ece7b6defb40f2f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  shared_preferences_platform_interface:
+    dependency: transitive
+    description:
+      name: shared_preferences_platform_interface
+      sha256: "649dc798a33931919ea356c4305c2d1f81619ea6e92244070b520187b5140ef9"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.2"
+  shared_preferences_web:
+    dependency: transitive
+    description:
+      name: shared_preferences_web
+      sha256: c49bd060261c9a3f0ff445892695d6212ff603ef3115edbb448509d407600019
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.3"
+  shared_preferences_windows:
+    dependency: transitive
+    description:
+      name: shared_preferences_windows
+      sha256: "94ef0f72b2d71bc3e700e025db3710911bd51a71cefb65cc609dd0d9a982e3c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -176,6 +716,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.4.1"
+  sync_http:
+    dependency: transitive
+    description:
+      name: sync_http
+      sha256: "7f0cd72eca000d2e026bcd6f990b81d0ca06022ef4e32fb257b30d3d1014a961"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.1"
   term_glyph:
     dependency: transitive
     description:
@@ -192,6 +740,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.11"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
+  uuid:
+    dependency: "direct main"
+    description:
+      name: uuid
+      sha256: "9b129329f58692f6e6578329498a8fe9fbe98f090beb764ffbb8ee2eadd01dcd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.6.0"
   vector_math:
     dependency: transitive
     description:
@@ -208,6 +772,46 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "15.2.0"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  webdriver:
+    dependency: transitive
+    description:
+      name: webdriver
+      sha256: "2f3a14ca026957870cfd9c635b83507e0e51d8091568e90129fbf805aba7cade"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.0"
+  win32:
+    dependency: transitive
+    description:
+      name: win32
+      sha256: a0b93865d5644f11cf6a8c3f6db909f1ec168958b5805f6cc684adea957cd63d
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.4.0"
+  xdg_directories:
+    dependency: transitive
+    description:
+      name: xdg_directories
+      sha256: "7a3f37b05d989967cdddcbb571f1ea834867ae2faa29725fd085180e0883aa15"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      sha256: f67cdd8e07d3c6329146aaef1ba043542b3134c12489f553ca9a7435d1068aea
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.4"
 sdks:
   dart: ">=3.12.2 <4.0.0"
-  flutter: ">=3.18.0-18.0.pre.54"
+  flutter: ">=3.44.0"

pubspec.yaml

@@ -1,5 +1,5 @@
 name: patbond_flutter
-description: "A new Flutter project."
+description: "Patbond pet community and health companion."
 # The following line prevents the package from being accidentally published to
 # pub.dev using `flutter pub publish`. This is preferred for private packages.
 publish_to: 'none' # Remove this line if you wish to publish to pub.dev
@@ -34,10 +34,24 @@ dependencies:
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.8
+  shared_preferences: ^2.5.4
+  dio: ^5.11.1
+  flutter_secure_storage: ^11.0.0
+  uuid: ^4.6.0
+  package_info_plus: ^10.2.1
+  # T3-13 媒体上传：系统选择器多选（03 号评估 §4.1 选型）。
+  image_picker: ^1.2.0
+  # T3-13 媒体上传：原生编解码压缩（长边重采样 + JPEG 质量 + EXIF 方向矫正）。
+  flutter_image_compress: ^2.4.0
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
+  # T3-14 compose 真链路桌面实测入口（integration_test/，环境变量门控）。
+  integration_test:
+    sdk: flutter
+  # 定时冲刷/退避测试的假时钟驱动（flutter_test 传递依赖显式声明）。
+  fake_async: ^1.3.3
 
   # The "flutter_lints" package below contains a set of recommended lints to
   # encourage good coding practices. The lint set provided by the package is

scripts/check-secrets.sh

@@ -0,0 +1,104 @@
+#!/bin/sh
+# check-secrets.sh —— 凭证防泄漏检查（ADR-021，规范见 patbond-doc docs/development/git-workflow.md）
+#
+# 规则单一来源：本地 pre-commit 与 CI 兜底跑的是同一个脚本、同一张规则表。
+# 三仓（patbond-api / patbond-flutter / patbond-doc）各存一份同构副本，改规则时三仓同步。
+#
+# 用法：
+#   sh scripts/check-secrets.sh --staged    # pre-commit：扫暂存区内容（经 scripts/hooks/pre-commit 调用）
+#   sh scripts/check-secrets.sh --all       # CI 兜底 / 手动自查：扫全部已跟踪文件（缺省模式）
+#   sh scripts/check-secrets.sh <文件...>   # 扫指定文件
+#
+# 拦下真实凭证时的第一动作：去云控制台轮换/禁用该密钥，然后才是清理提交。
+set -u
+
+mode="${1:---all}"
+
+# 允许清单：行内出现任一形态即放行（${} 注入、占位值、明显示例值）
+ALLOW='\$\{[^}]*\}|\{\{[^}]*\}\}|changeme|change[-_]me|your[-_][a-zA-Z0-9_-]+|<[a-zA-Z0-9 ,_.-]+>|placeholder|example|sample|dummy|fake|redacted|\*\*\*'
+
+# 内容扫描跳过：本脚本与 hook 自身（含规则文本，非凭证）
+SKIP_PATHS='(^|/)scripts/(check-secrets\.sh|hooks/pre-commit)$'
+
+# 文件名黑名单：凭证载体文件本体禁止入库（.sample/.example 除外）
+DENY_NAME='(^|/)\.env(\.[^/]+)?$|(^|/)credentials[^/]*$|[Aa]ccess[Kk]eys?[^/]*\.csv$|(^|/)rootkey\.csv$'
+DENY_NAME_OK='\.(sample|example)$'
+
+# 规则表：ID<TAB>大小写旗标(i=忽略大小写，-=敏感)<TAB>文件范围ERE(-=全部文件)<TAB>行模式ERE
+RULES=$(cat <<'EOF'
+AK-AWS	-	-	AKIA[0-9A-Z]{16}
+AK-QCLOUD	-	-	AKID[0-9A-Za-z]{16,}
+AK-ALIYUN	-	-	LTAI[0-9A-Za-z]{12,}
+MINIO-DEFAULT	i	-	minio[-_.]?admin
+PRIVATE-KEY	-	-	^[[:space:]]*-----BEGIN [A-Z ]*PRIVATE KEY-----[[:space:]]*$
+KEY-ASSIGN	i	-	(access[-_]?key(_?id)?|secret[-_]?(access[-_]?)?key)["']?[[:space:]]*[:=][[:space:]]*["']?[A-Za-z0-9+/=_-]{8,}
+JWT-SECRET	i	-	(jwt[-_.]?secret|signing[-_]?key|token[-_]?secret|hmac[-_]?(key|secret))["']?[[:space:]]*[:=][[:space:]]*["']?[A-Za-z0-9+/=_-]{8,}
+DB-PASSWORD	i	\.(ya?ml|properties|toml|conf|ini)(\.sample|\.example)?$	(password|passwd|pwd)["']?[[:space:]]*[:=][[:space:]]*["']?[^[:space:]"'$]{6,}
+EOF
+)
+
+case "$mode" in
+--staged)
+    files=$(git diff --cached --name-only --diff-filter=ACM)
+    src=index
+    ;;
+--all)
+    files=$(git ls-files)
+    src=worktree
+    ;;
+-*)
+    echo "用法: $0 [--staged|--all|<文件...>]" >&2
+    exit 2
+    ;;
+*)
+    files=$(printf '%s\n' "$@")
+    src=worktree
+    ;;
+esac
+
+[ -n "$files" ] || exit 0
+
+tmp=$(mktemp) || exit 2
+viol=$(mktemp) || exit 2
+trap 'rm -f "$tmp" "$viol"' EXIT
+
+# 第一道：文件名黑名单
+printf '%s\n' "$files" | grep -E "$DENY_NAME" | grep -vE "$DENY_NAME_OK" |
+    sed 's/^/[NAME-DENY] /' >>"$viol" || true
+
+# 第二道：逐文件逐规则内容扫描（二进制文件经 grep -I 自然跳过）
+IFS='
+'
+for f in $files; do
+    printf '%s' "$f" | grep -qE "$SKIP_PATHS" && continue
+    if [ "$src" = index ]; then
+        git show ":$f" >"$tmp" 2>/dev/null || continue
+    else
+        [ -f "$f" ] || continue
+        cat -- "$f" >"$tmp"
+    fi
+    printf '%s\n' "$RULES" | while IFS="$(printf '\t')" read -r id flag scope pat; do
+        [ -n "$id" ] || continue
+        if [ "$scope" != "-" ]; then
+            printf '%s' "$f" | grep -qE "$scope" || continue
+        fi
+        ci=""
+        [ "$flag" = "i" ] && ci="-i"
+        grep -InE $ci -e "$pat" "$tmp" 2>/dev/null | grep -viE "$ALLOW" |
+            sed "s|^|[$id] $f:|" >>"$viol" || true
+    done
+done
+
+if [ -s "$viol" ]; then
+    echo "凭证防泄漏检查未通过（ADR-021）——以下内容疑似真实凭证：" >&2
+    cat "$viol" >&2
+    cat >&2 <<'MSG'
+处置：
+  1. 若是真实凭证：先去云控制台轮换/禁用该密钥，再从提交中移除；
+  2. 若是误报：改用 ${} 注入或占位值（changeme / your-xxx / <占位>），
+     或与团队确认后调整三仓同构的 scripts/check-secrets.sh 规则表。
+敏感信息只允许存在于被 gitignore 的文件或 .sample 占位中（git-workflow.md）。
+MSG
+    exit 1
+fi
+exit 0

scripts/hooks/pre-commit

@@ -0,0 +1,6 @@
+#!/bin/sh
+# pre-commit —— 凭证防泄漏（ADR-021）。启用（每人每仓一次）：
+#   git config core.hooksPath scripts/hooks
+# 注意：core.hooksPath 会整体接管 hooks 目录；本仓无其他自定义 hook。
+repo_root=$(git rev-parse --show-toplevel) || exit 1
+exec sh "$repo_root/scripts/check-secrets.sh" --staged

test/analytics/analytics_event_store_test.dart

@@ -0,0 +1,159 @@
+import 'dart:convert';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:patbond_flutter/analytics/analytics_event_store.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+Map<String, dynamic> event(int seq) => {
+  'eventId': 'id-$seq',
+  'eventName': 'auth_login_succeeded',
+  'seq': seq,
+};
+
+void main() {
+  group('AnalyticsEventStore', () {
+    test('事件持久化后新实例冷启动可恢复（顺序保持旧 → 新）', () async {
+      SharedPreferences.setMockInitialValues({});
+      final store = AnalyticsEventStore();
+      await store.restore();
+      for (var i = 0; i < 45; i++) {
+        await store.add(event(i));
+      }
+
+      final reborn = AnalyticsEventStore();
+      await reborn.restore();
+
+      expect(reborn.length, 45);
+      expect(reborn.events.first['seq'], 0);
+      expect(reborn.events.last['seq'], 44);
+      // 45 条按容量 20 分段应为 3 段
+      final prefs = await SharedPreferences.getInstance();
+      final index =
+          jsonDecode(prefs.getString(AnalyticsEventStore.segIndexKey)!) as List;
+      expect(index.length, 3);
+    });
+
+    test('超过 500 条总上限时丢最旧整段', () async {
+      SharedPreferences.setMockInitialValues({});
+      final store = AnalyticsEventStore();
+      await store.restore();
+      for (var i = 0; i < 520; i++) {
+        await store.add(event(i));
+      }
+
+      // 第 501 条触发淘汰最旧一段（20 条），此后回落到上限内
+      expect(store.length, 500);
+      expect(store.events.first['seq'], 20);
+      expect(store.events.last['seq'], 519);
+      expect(store.droppedCount, 20);
+    });
+
+    test('损坏段丢弃不崩溃，其余段正常恢复且索引被清理', () async {
+      SharedPreferences.setMockInitialValues({
+        AnalyticsEventStore.segIndexKey: jsonEncode(['bad', 'good']),
+        '${AnalyticsEventStore.segKeyPrefix}bad': '{not-valid-json[[',
+        '${AnalyticsEventStore.segKeyPrefix}good': jsonEncode([event(7)]),
+      });
+
+      final store = AnalyticsEventStore();
+      await store.restore();
+
+      expect(store.length, 1);
+      expect(store.events.single['seq'], 7);
+      expect(store.droppedCount, 1);
+      final prefs = await SharedPreferences.getInstance();
+      expect(prefs.getString('${AnalyticsEventStore.segKeyPrefix}bad'), isNull);
+      expect(jsonDecode(prefs.getString(AnalyticsEventStore.segIndexKey)!), [
+        'good',
+      ]);
+    });
+
+    test('段索引本身损坏时清扫孤儿段、从空队列重建', () async {
+      SharedPreferences.setMockInitialValues({
+        AnalyticsEventStore.segIndexKey: 'garbage-not-json',
+        '${AnalyticsEventStore.segKeyPrefix}orphan': jsonEncode([event(1)]),
+      });
+
+      final store = AnalyticsEventStore();
+      await store.restore();
+
+      expect(store.length, 0);
+      final prefs = await SharedPreferences.getInstance();
+      expect(
+        prefs.getString('${AnalyticsEventStore.segKeyPrefix}orphan'),
+        isNull,
+      );
+      // 可继续正常写入
+      await store.add(event(2));
+      expect(store.length, 1);
+    });
+
+    test('takeBatch 封段：在途批次不受新事件影响，删段后新事件保留', () async {
+      SharedPreferences.setMockInitialValues({});
+      final store = AnalyticsEventStore();
+      await store.restore();
+      for (var i = 0; i < 5; i++) {
+        await store.add(event(i));
+      }
+
+      final batch = store.takeBatch(50);
+      // 模拟上传在途期间进入的新事件
+      await store.add(event(99));
+
+      expect(batch.events.length, 5);
+      await store.removeSegments(batch.segmentIds);
+      expect(store.length, 1);
+      expect(store.events.single['seq'], 99);
+    });
+
+    test('takeBatch 按段拼批不超过单批上限', () async {
+      SharedPreferences.setMockInitialValues({});
+      final store = AnalyticsEventStore();
+      await store.restore();
+      for (var i = 0; i < 60; i++) {
+        await store.add(event(i));
+      }
+
+      // 段容量 20、单批上限 50 → 每批最多 2 整段（40 条）
+      final first = store.takeBatch(50);
+      expect(first.events.length, 40);
+      await store.removeSegments(first.segmentIds);
+      final second = store.takeBatch(50);
+      expect(second.events.length, 20);
+    });
+
+    test('上传成功删段后 shared_preferences 无残留', () async {
+      SharedPreferences.setMockInitialValues({});
+      final store = AnalyticsEventStore();
+      await store.restore();
+      for (var i = 0; i < 20; i++) {
+        await store.add(event(i));
+      }
+
+      final batch = store.takeBatch(50);
+      await store.removeSegments(batch.segmentIds);
+
+      expect(store.length, 0);
+      final prefs = await SharedPreferences.getInstance();
+      expect(
+        prefs.getKeys().where(
+          (key) => key.startsWith(AnalyticsEventStore.segKeyPrefix),
+        ),
+        isEmpty,
+      );
+      expect(
+        jsonDecode(prefs.getString(AnalyticsEventStore.segIndexKey)!),
+        isEmpty,
+      );
+    });
+
+    test('未调用 restore（持久化不可用）时降级为纯内存队列', () async {
+      final store = AnalyticsEventStore();
+      await store.add(event(1));
+      expect(store.length, 1);
+      final batch = store.takeBatch(50);
+      await store.removeSegments(batch.segmentIds);
+      expect(store.length, 0);
+    });
+  });
+}

test/analytics/analytics_flush_scheduler_test.dart

@@ -0,0 +1,209 @@
+import 'package:fake_async/fake_async.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:patbond_flutter/analytics/analytics_service.dart';
+
+/// 定时冲刷与失败退避测试（M3 T3-19，13 号 §3.4 第 4 触发点 +
+/// iteration-3 06 号 §2.3）：fakeAsync 驱动 Timer.periodic，
+/// 时钟注入照 SessionTracker 先例，假上传子类免起真实 HttpServer。
+class _FakeUploadService extends AnalyticsService {
+  _FakeUploadService({super.now})
+    : super(
+        apiBaseUrl: 'http://unused',
+        getAccessToken: null,
+        getSessionId: () => 'session-x',
+      );
+
+  int uploadAttempts = 0;
+  bool failUploads = false;
+  final List<int> uploadedBatchSizes = [];
+
+  @override
+  Future<bool> uploadBatch(List<Map<String, dynamic>> events) async {
+    uploadAttempts++;
+    if (failUploads) {
+      throw Exception('simulated network failure');
+    }
+    uploadedBatchSizes.add(events.length);
+    return false;
+  }
+}
+
+void main() {
+  /// 逐秒推进假时间轴并同步注入时钟，保证定时器回调读到的 now 与
+  /// 已流逝时间一致（整段 elapse 会让回调读到未更新的旧时钟）。
+  (void Function(Duration), _FakeUploadService) setup(FakeAsync async) {
+    var clock = DateTime.utc(2026, 9, 8, 10);
+    final service = _FakeUploadService(now: () => clock);
+    void elapse(Duration duration) {
+      final target = clock.add(duration);
+      while (clock.isBefore(target)) {
+        clock = clock.add(const Duration(seconds: 1));
+        async.elapse(const Duration(seconds: 1));
+      }
+    }
+
+    return (elapse, service);
+  }
+
+  group('AnalyticsService 定时冲刷', () {
+    test('前台每 30 秒冲刷不满 20 条的队列', () {
+      fakeAsync((async) {
+        final (elapse, service) = setup(async);
+        service.startPeriodicFlush();
+        service.trackEvent('page_viewed', {'pageName': 'home'});
+        async.flushMicrotasks();
+
+        elapse(const Duration(seconds: 29));
+        expect(service.uploadAttempts, 0);
+
+        elapse(const Duration(seconds: 1));
+        expect(service.uploadedBatchSizes, [1]);
+        expect(service.pendingEvents, isEmpty);
+        service.stopPeriodicFlush();
+      });
+    });
+
+    test('队列为空时定时器不发起上传', () {
+      fakeAsync((async) {
+        final (elapse, service) = setup(async);
+        service.startPeriodicFlush();
+
+        elapse(const Duration(minutes: 2));
+        expect(service.uploadAttempts, 0);
+        service.stopPeriodicFlush();
+      });
+    });
+
+    test('stopPeriodicFlush 停止触发（退后台），start 恢复（回前台）', () {
+      fakeAsync((async) {
+        final (elapse, service) = setup(async);
+        service.trackEvent('page_viewed', {'pageName': 'home'});
+        async.flushMicrotasks();
+
+        service.startPeriodicFlush();
+        service.stopPeriodicFlush();
+        elapse(const Duration(minutes: 2));
+        expect(service.uploadAttempts, 0);
+
+        service.startPeriodicFlush();
+        elapse(const Duration(seconds: 30));
+        expect(service.uploadedBatchSizes, [1]);
+        service.stopPeriodicFlush();
+      });
+    });
+
+    test('startPeriodicFlush 幂等，不叠加多个定时器', () {
+      fakeAsync((async) {
+        final (elapse, service) = setup(async);
+        service.startPeriodicFlush();
+        service.startPeriodicFlush();
+        service.trackEvent('page_viewed', {'pageName': 'home'});
+        async.flushMicrotasks();
+
+        elapse(const Duration(seconds: 30));
+        expect(service.uploadAttempts, 1);
+        service.stopPeriodicFlush();
+      });
+    });
+  });
+
+  group('AnalyticsService 失败退避', () {
+    test('上传失败按 30s→60s→120s 指数退避，期间定时冲刷跳过', () {
+      fakeAsync((async) {
+        final (elapse, service) = setup(async);
+        service.failUploads = true;
+        service.trackEvent('page_viewed', {'pageName': 'home'});
+        async.flushMicrotasks();
+        service.startPeriodicFlush();
+
+        // t=30s 首次尝试失败 → 退避 30s（下次可试 t=60s）。
+        elapse(const Duration(seconds: 30));
+        expect(service.uploadAttempts, 1);
+
+        // t=60s 第二次失败 → 退避 60s（下次 t=120s）；t=90s 被跳过。
+        elapse(const Duration(seconds: 30));
+        expect(service.uploadAttempts, 2);
+        elapse(const Duration(seconds: 30));
+        expect(service.uploadAttempts, 2);
+
+        // t=120s 第三次失败 → 退避 120s；t=150/180/210s 均跳过。
+        elapse(const Duration(seconds: 30));
+        expect(service.uploadAttempts, 3);
+        elapse(const Duration(seconds: 90));
+        expect(service.uploadAttempts, 3);
+
+        // t=240s 第四次尝试；事件始终保留在队列。
+        elapse(const Duration(seconds: 30));
+        expect(service.uploadAttempts, 4);
+        expect(service.pendingEvents.length, 1);
+        service.stopPeriodicFlush();
+      });
+    });
+
+    test('退避封顶 5 分钟', () {
+      fakeAsync((async) {
+        final (elapse, service) = setup(async);
+        service.failUploads = true;
+        service.trackEvent('page_viewed', {'pageName': 'home'});
+        async.flushMicrotasks();
+        service.startPeriodicFlush();
+
+        // 失败序列 t=30/60/120/240s（退避 30/60/120/240s），
+        // 第五次 t=480s：240s×2=480s 超帽，封顶 300s。
+        elapse(const Duration(minutes: 8));
+        expect(service.uploadAttempts, 5);
+
+        // t=780s 前（480+300s 窗口内）不再尝试，到点第六次。
+        elapse(const Duration(seconds: 299));
+        expect(service.uploadAttempts, 5);
+        elapse(const Duration(seconds: 1));
+        expect(service.uploadAttempts, 6);
+        service.stopPeriodicFlush();
+      });
+    });
+
+    test('退避只挡定时冲刷，flushNow 显式触发不受限', () {
+      fakeAsync((async) {
+        final (elapse, service) = setup(async);
+        service.failUploads = true;
+        service.trackEvent('page_viewed', {'pageName': 'home'});
+        async.flushMicrotasks();
+        service.startPeriodicFlush();
+
+        elapse(const Duration(seconds: 30));
+        expect(service.uploadAttempts, 1);
+
+        // 退避窗口内（t=45s）退后台显式冲刷仍然尝试。
+        elapse(const Duration(seconds: 15));
+        service.flushNow();
+        async.flushMicrotasks();
+        expect(service.uploadAttempts, 2);
+        service.stopPeriodicFlush();
+      });
+    });
+
+    test('上传成功即重置退避，恢复 30 秒节奏', () {
+      fakeAsync((async) {
+        final (elapse, service) = setup(async);
+        service.failUploads = true;
+        service.trackEvent('page_viewed', {'pageName': 'home'});
+        async.flushMicrotasks();
+        service.startPeriodicFlush();
+
+        // t=30/60s 两次失败后网络恢复，t=120s 第三次成功。
+        elapse(const Duration(seconds: 60));
+        expect(service.uploadAttempts, 2);
+        service.failUploads = false;
+        elapse(const Duration(seconds: 60));
+        expect(service.uploadedBatchSizes, [1]);
+
+        // 退避已重置：新事件在下一个 30 秒刻度即上传，无残留等待。
+        service.trackEvent('page_viewed', {'pageName': 'feed'});
+        async.flushMicrotasks();
+        elapse(const Duration(seconds: 30));
+        expect(service.uploadedBatchSizes, [1, 1]);
+        service.stopPeriodicFlush();
+      });
+    });
+  });
+}

test/analytics/analytics_persistent_queue_test.dart

@@ -0,0 +1,208 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:patbond_flutter/analytics/analytics_event_store.dart';
+import 'package:patbond_flutter/analytics/analytics_service.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+/// 服务级持久化队列联动测试（13 号规范 §3.3/§3.4）：
+/// 本地 HttpServer 模拟 /api/v1/events 的 202 / 400 响应。
+void main() {
+  Future<(HttpServer, List<int>)> startServer(int statusCode) async {
+    final server = await HttpServer.bind(InternetAddress.loopbackIPv4, 0);
+    final batchSizes = <int>[];
+    server.listen((request) async {
+      final body =
+          jsonDecode(await utf8.decoder.bind(request).join())
+              as Map<String, dynamic>;
+      batchSizes.add((body['events'] as List).length);
+      request.response.statusCode = statusCode;
+      await request.response.close();
+    });
+    return (server, batchSizes);
+  }
+
+  AnalyticsService buildService(String apiBaseUrl, AnalyticsEventStore store) {
+    return AnalyticsService(
+      apiBaseUrl: apiBaseUrl,
+      getAccessToken: null,
+      getSessionId: () => 'session-x',
+      store: store,
+    );
+  }
+
+  group('AnalyticsService 持久化队列', () {
+    test('满 20 条冲刷、202 受理后清空持久化段', () async {
+      SharedPreferences.setMockInitialValues({});
+      final (server, batchSizes) = await startServer(202);
+      addTearDown(() => server.close(force: true));
+      final store = AnalyticsEventStore();
+      await store.restore();
+      final service = buildService('http://127.0.0.1:${server.port}', store);
+
+      for (var i = 0; i < 20; i++) {
+        await service.trackEvent('auth_login_succeeded', {'attemptSeq': i});
+      }
+
+      expect(batchSizes, [20]);
+      expect(service.pendingEvents, isEmpty);
+      final prefs = await SharedPreferences.getInstance();
+      expect(
+        prefs.getKeys().where(
+          (key) => key.startsWith(AnalyticsEventStore.segKeyPrefix),
+        ),
+        isEmpty,
+      );
+    });
+
+    test('flushNow 冲刷不满 20 条的持久化队列', () async {
+      SharedPreferences.setMockInitialValues({});
+      final (server, batchSizes) = await startServer(202);
+      addTearDown(() => server.close(force: true));
+      final store = AnalyticsEventStore();
+      await store.restore();
+      final service = buildService('http://127.0.0.1:${server.port}', store);
+
+      await service.trackEvent('auth_login_succeeded');
+      await service.trackEvent('auth_logout');
+      await service.flushNow();
+
+      expect(batchSizes, [2]);
+      expect(service.pendingEvents, isEmpty);
+      expect(store.length, 0);
+    });
+
+    test('上传失败事件持久化，冷启动恢复后自动重传', () async {
+      SharedPreferences.setMockInitialValues({});
+      // 第一个进程：端口不可达，20 条触发冲刷失败，事件留在持久化队列
+      final storeA = AnalyticsEventStore();
+      await storeA.restore();
+      final serviceA = buildService('http://127.0.0.1:1', storeA);
+      for (var i = 0; i < 20; i++) {
+        await serviceA.trackEvent('auth_login_succeeded', {'attemptSeq': i});
+      }
+      expect(serviceA.pendingEvents.length, 20);
+
+      // 模拟冷启动：新实例 restore 恢复并冲刷到可用服务端
+      final (server, batchSizes) = await startServer(202);
+      addTearDown(() => server.close(force: true));
+      final storeB = AnalyticsEventStore();
+      final serviceB = buildService('http://127.0.0.1:${server.port}', storeB);
+      await serviceB.restore();
+
+      expect(batchSizes, [20]);
+      expect(serviceB.pendingEvents, isEmpty);
+    });
+
+    test('4xx 永久拒绝直接删段丢弃（毒丸防护），计入丢弃诊断数', () async {
+      SharedPreferences.setMockInitialValues({});
+      final (server, batchSizes) = await startServer(400);
+      addTearDown(() => server.close(force: true));
+      final store = AnalyticsEventStore();
+      await store.restore();
+      final service = buildService('http://127.0.0.1:${server.port}', store);
+
+      for (var i = 0; i < 20; i++) {
+        await service.trackEvent('auth_login_succeeded', {'attemptSeq': i});
+      }
+
+      expect(batchSizes, [20]);
+      expect(service.pendingEvents, isEmpty);
+      expect(store.droppedCount, 20);
+      final prefs = await SharedPreferences.getInstance();
+      expect(
+        prefs.getKeys().where(
+          (key) => key.startsWith(AnalyticsEventStore.segKeyPrefix),
+        ),
+        isEmpty,
+      );
+    });
+
+    test('积压超过单批上限时按 50 条分批循环上传', () async {
+      SharedPreferences.setMockInitialValues({});
+      final (server, batchSizes) = await startServer(202);
+      addTearDown(() => server.close(force: true));
+      final store = AnalyticsEventStore();
+      await store.restore();
+      // 直接预置 60 条积压（绕过 trackEvent 的满 20 冲刷触发）
+      for (var i = 0; i < 60; i++) {
+        await store.add({'eventId': 'id-$i', 'eventName': 'page_viewed'});
+      }
+      final service = buildService('http://127.0.0.1:${server.port}', store);
+
+      await service.flushNow();
+
+      // 段容量 20、单批上限 50 → 40 + 20 两批
+      expect(batchSizes, [40, 20]);
+      expect(service.pendingEvents, isEmpty);
+    });
+
+    test('429 不按毒丸丢弃：保段待退避重试（限流分支随后端落地）', () async {
+      SharedPreferences.setMockInitialValues({});
+      final (server, batchSizes) = await startServer(429);
+      addTearDown(() => server.close(force: true));
+      final store = AnalyticsEventStore();
+      await store.restore();
+      final service = buildService('http://127.0.0.1:${server.port}', store);
+
+      for (var i = 0; i < 20; i++) {
+        await service.trackEvent('auth_login_succeeded', {'attemptSeq': i});
+      }
+
+      expect(batchSizes, [20]);
+      expect(service.pendingEvents.length, 20);
+      expect(store.droppedCount, 0);
+    });
+  });
+
+  group('AnalyticsService anonymousId 持久化', () {
+    test('首次 restore 落盘生成的 anonymousId', () async {
+      SharedPreferences.setMockInitialValues({});
+      final service = buildService('http://unused', AnalyticsEventStore());
+
+      await service.restore();
+
+      final prefs = await SharedPreferences.getInstance();
+      expect(
+        prefs.getString(AnalyticsService.anonymousIdKey),
+        service.anonymousId,
+      );
+    });
+
+    test('冷启动新实例沿用持久化 anonymousId，事件跨启动可归并', () async {
+      SharedPreferences.setMockInitialValues({});
+      final serviceA = buildService('http://unused', AnalyticsEventStore());
+      await serviceA.restore();
+      final firstLaunchId = serviceA.anonymousId;
+
+      // 模拟冷启动：新实例构造时是新的随机 v4，restore 后采用存储值。
+      final serviceB = buildService('http://unused', AnalyticsEventStore());
+      expect(serviceB.anonymousId, isNot(firstLaunchId));
+      await serviceB.restore();
+
+      expect(serviceB.anonymousId, firstLaunchId);
+      await serviceB.trackEvent('auth_login_succeeded');
+      expect(serviceB.pendingEvents.single['anonymousId'], firstLaunchId);
+    });
+
+    test('构造注入 anonymousId 的测试通道不被持久化覆盖', () async {
+      SharedPreferences.setMockInitialValues({
+        AnalyticsService.anonymousIdKey: 'anon-stored',
+      });
+      final service = AnalyticsService(
+        apiBaseUrl: 'http://unused',
+        getAccessToken: null,
+        getSessionId: () => 'session-x',
+        anonymousId: 'anon-injected',
+        store: AnalyticsEventStore(),
+      );
+
+      await service.restore();
+
+      expect(service.anonymousId, 'anon-injected');
+      final prefs = await SharedPreferences.getInstance();
+      expect(prefs.getString(AnalyticsService.anonymousIdKey), 'anon-stored');
+    });
+  });
+}

test/analytics/analytics_route_observer_test.dart

@@ -0,0 +1,237 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:patbond_flutter/analytics/analytics_page_name.dart';
+import 'package:patbond_flutter/analytics/analytics_route_observer.dart';
+import 'package:patbond_flutter/analytics/page_view_tracker.dart';
+
+void main() {
+  group('AnalyticsRouteObserver', () {
+    testWidgets('push 路由报 page_viewed', (tester) async {
+      final events = <Map<String, dynamic>>[];
+      final tracker = PageViewTracker((name, [props]) async {
+        events.add({'event': name, ...?props});
+      });
+      final observer = AnalyticsRouteObserver(tracker: tracker);
+
+      await tester.pumpWidget(
+        MaterialApp(
+          navigatorObservers: [observer],
+          home: Builder(
+            builder: (context) => ElevatedButton(
+              onPressed: () => Navigator.of(context).push(
+                MaterialPageRoute<void>(
+                  settings: RouteSettings(
+                    name: AnalyticsPageName.login.pageName,
+                  ),
+                  builder: (_) => const Placeholder(),
+                ),
+              ),
+              child: const Text('Go'),
+            ),
+          ),
+        ),
+      );
+      await tester.tap(find.text('Go'));
+      await tester.pumpAndSettle();
+
+      expect(events, hasLength(1));
+      expect(events.first['event'], 'page_viewed');
+      expect(events.first['pageName'], 'login');
+    });
+
+    testWidgets('push 两页 referrer 链正确，pop 返回补报前一页', (tester) async {
+      final events = <Map<String, dynamic>>[];
+      final tracker = PageViewTracker((name, [props]) async {
+        events.add({'event': name, ...?props});
+      });
+      final observer = AnalyticsRouteObserver(tracker: tracker);
+
+      await tester.pumpWidget(
+        MaterialApp(
+          navigatorObservers: [observer],
+          home: Builder(
+            builder: (context) => ElevatedButton(
+              onPressed: () => Navigator.of(context).push(
+                MaterialPageRoute<void>(
+                  settings: RouteSettings(
+                    name: AnalyticsPageName.login.pageName,
+                  ),
+                  builder: (loginContext) => ElevatedButton(
+                    onPressed: () => Navigator.of(loginContext).push(
+                      MaterialPageRoute<void>(
+                        settings: RouteSettings(
+                          name: AnalyticsPageName.register.pageName,
+                        ),
+                        builder: (registerContext) => ElevatedButton(
+                          onPressed: () => Navigator.of(registerContext).pop(),
+                          child: const Text('Back'),
+                        ),
+                      ),
+                    ),
+                    child: const Text('Next'),
+                  ),
+                ),
+              ),
+              child: const Text('Go'),
+            ),
+          ),
+        ),
+      );
+      await tester.tap(find.text('Go'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('Next'));
+      await tester.pumpAndSettle();
+
+      // push 两页：两条事件，referrer 链正确（06 §5.2 验收 5）。
+      expect(events.map((e) => e['pageName']), ['login', 'register']);
+      expect(events[0].containsKey('referrer'), isFalse);
+      expect(events[1]['referrer'], 'login');
+
+      // pop 返回：didPop 补报重新曝光的前一页，referrer 为弹出页。
+      await tester.tap(find.text('Back'));
+      await tester.pumpAndSettle();
+      expect(events, hasLength(3));
+      expect(events[2]['pageName'], 'login');
+      expect(events[2]['referrer'], 'register');
+    });
+
+    testWidgets('pop 回无名根路由经 resolveRootPage 补报', (tester) async {
+      final events = <Map<String, dynamic>>[];
+      final tracker = PageViewTracker((name, [props]) async {
+        events.add({'event': name, ...?props});
+      });
+      final observer = AnalyticsRouteObserver(
+        tracker: tracker,
+        resolveRootPage: () => AnalyticsPageName.home,
+      );
+
+      await tester.pumpWidget(
+        MaterialApp(
+          navigatorObservers: [observer],
+          home: Builder(
+            builder: (context) => ElevatedButton(
+              onPressed: () => Navigator.of(context).push(
+                MaterialPageRoute<void>(
+                  settings: RouteSettings(
+                    name: AnalyticsPageName.profile.pageName,
+                  ),
+                  builder: (innerContext) => ElevatedButton(
+                    onPressed: () => Navigator.of(innerContext).pop(),
+                    child: const Text('Back'),
+                  ),
+                ),
+              ),
+              child: const Text('Go'),
+            ),
+          ),
+        ),
+      );
+      await tester.tap(find.text('Go'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('Back'));
+      await tester.pumpAndSettle();
+
+      expect(events.map((e) => e['pageName']), ['profile', 'home']);
+      expect(events[1]['referrer'], 'profile');
+    });
+
+    testWidgets('未在枚举的路由名不上报', (tester) async {
+      final events = <Map<String, dynamic>>[];
+      final tracker = PageViewTracker((name, [props]) async {
+        events.add({'event': name, ...?props});
+      });
+      final observer = AnalyticsRouteObserver(tracker: tracker);
+
+      await tester.pumpWidget(
+        MaterialApp(
+          navigatorObservers: [observer],
+          home: Builder(
+            builder: (context) => ElevatedButton(
+              onPressed: () => Navigator.of(context).push(
+                MaterialPageRoute<void>(
+                  settings: const RouteSettings(name: '/debug/unknown'),
+                  builder: (_) => const Placeholder(),
+                ),
+              ),
+              child: const Text('Go'),
+            ),
+          ),
+        ),
+      );
+      await tester.tap(find.text('Go'));
+      await tester.pumpAndSettle();
+
+      expect(events, isEmpty);
+    });
+
+    testWidgets('dialog 不上报（PopupRoute 不是 PageRoute）', (tester) async {
+      final events = <Map<String, dynamic>>[];
+      final tracker = PageViewTracker((name, [props]) async {
+        events.add({'event': name, ...?props});
+      });
+      final observer = AnalyticsRouteObserver(tracker: tracker);
+
+      await tester.pumpWidget(
+        MaterialApp(
+          navigatorObservers: [observer],
+          home: Builder(
+            builder: (context) => ElevatedButton(
+              onPressed: () => showDialog<void>(
+                context: context,
+                builder: (_) => const AlertDialog(title: Text('Dialog')),
+              ),
+              child: const Text('Show'),
+            ),
+          ),
+        ),
+      );
+      await tester.tap(find.text('Show'));
+      await tester.pumpAndSettle();
+
+      expect(events, isEmpty);
+    });
+  });
+
+  group('PageViewTracker', () {
+    test('连续相同页面去重（Tab 重复点选）', () {
+      final events = <Map<String, dynamic>>[];
+      final tracker = PageViewTracker((name, [props]) async {
+        events.add({'event': name, ...?props});
+      });
+
+      tracker.report(AnalyticsPageName.home);
+      tracker.report(AnalyticsPageName.home);
+      tracker.report(AnalyticsPageName.profile);
+      tracker.report(AnalyticsPageName.home);
+
+      expect(events, hasLength(3));
+      expect(events.map((e) => e['pageName']), ['home', 'profile', 'home']);
+    });
+
+    test('referrer 链跨机制连贯（首页无 referrer）', () {
+      final events = <Map<String, dynamic>>[];
+      final tracker = PageViewTracker((name, [props]) async {
+        events.add({'event': name, ...?props});
+      });
+
+      tracker.report(AnalyticsPageName.home);
+      tracker.report(AnalyticsPageName.login);
+      tracker.report(AnalyticsPageName.profile);
+
+      expect(events[0].containsKey('referrer'), isFalse);
+      expect(events[1]['referrer'], 'home');
+      expect(events[2]['referrer'], 'login');
+    });
+
+    test('reportTab 记录当前 Tab', () {
+      final events = <Map<String, dynamic>>[];
+      final tracker = PageViewTracker((name, [props]) async {
+        events.add({'event': name, ...?props});
+      });
+
+      tracker.reportTab(AnalyticsPageName.petArchive);
+      expect(tracker.currentTab, AnalyticsPageName.petArchive);
+      expect(events.single['pageName'], 'pet_archive');
+    });
+  });
+}