修复：花费卡展示实际月份 + 四张数据卡补可点提示（M3.5-03）

卡片标签硬编码「本月花费」，而服务端 summary.monthlyExpense 本就返回 month
（ISO year-month，按 tz 归月）。用户看不到实际月份，所以无法自证「我这条记录
到底落在哪个月」，把正确的 ¥0 当成统计故障。

已核实不改后端聚合：用户记录落在 2026-04-09、当天是 2026-09-10，
「本月花费 ¥0」是正确行为。本单只让客户端把口径亮出来。

- health_record_display 新增纯函数 monthlyExpenseCardLabel(month, {now})：
  同年「9 月花费」（窄卡一行放得下，故不取「2026-09 花费」）；跨年（服务端
  归月年份 ≠ 设备当前年份）「2026/12 花费」补年份消歧；串非法退回
  「本月花费」不崩不显示脏值。
- 可点提示：_SummaryCard 在 onTap 非空时右上角补 chevron_right。四张卡本都
  可点进明细页却无任何视觉提示（用户反馈不知道能点），提示形态沿用项目既有
  可点行/卡（宠物列表卡、健康提醒卡、资料页设置行）的 chevron_right，不自创。
- 整卡包 MergeSemantics：读屏一次读全「¥128.50，9 月花费，按钮」而非两段
  孤立文字。没有用 excludeSemantics——那会连带丢掉 InkWell 的可激活性。

既有测试口径调整：pet_detail_page_test 两处断言改为实际月份，且样本
monthlyExpense.month 改用当月串使断言不随年份漂移（跨年格式由纯函数单测覆盖）。

新增 integration_test/client_ux_live_test.dart（环境变量门控，默认 skip，
沿用 M3 既有 live 测试形态）：compose 六容器 + 真实 App 走完三项修复——
日期选择器全中文/品牌配色/手输录入/一键今天，以及花费卡实际月份 + chevron。
本机是 Wayland 会话、X11 import -window root 取不到根窗口，改为把整棵 App 包
一层 RepaintBoundary 后 toImage() 直出真实渲染像素落 build/ux-live/。

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

integration_test/client_ux_live_test.dart

@@ -0,0 +1,243 @@
+import 'dart:convert';
+import 'dart:io';
+import 'dart:ui' show ImageByteFormat;
+
+import 'package:flutter/material.dart';
+import 'package:flutter/rendering.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/theme/app_theme.dart';
+import 'package:patbond_flutter/features/auth/session_manager.dart';
+import 'package:patbond_flutter/features/pets/pet_detail_page.dart';
+import 'package:patbond_flutter/features/pets/pet_form_page.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);
+}
+
+/// M3.5-01/02/03 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 docker compose up -d --build），再：
+/// PATBOND_UX_LIVE=1 flutter test integration_test/client_ux_live_test.dart -d linux
+/// ```
+///
+/// 驱动**真实 App**（Linux 桌面 GTK 渲染管线 + 真实 HTTP）走用户实测那条路：
+/// 注册 → UI 登录 → 档案页建档 → 打开生日选择器（校验全中文 + 品牌配色 +
+/// 手输可用 + 一键今天）→ 保存进详情页（校验花费卡展示实际月份 + chevron）。
+/// 逐步截图落到 `build/ux-live/`：本机是 Wayland 会话，X11 的
+/// `import -window root` 取不到根窗口，改为把整棵 App 包一层
+/// [RepaintBoundary] 后 `toImage()` 直出真实渲染像素（含 Overlay 里的弹窗）。
+void main() {
+  final binding = IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+  binding.framePolicy = LiveTestWidgetsFlutterBindingFramePolicy.fullyLive;
+
+  final enabled = Platform.environment['PATBOND_UX_LIVE'] == '1';
+  const authBase = 'http://127.0.0.1:8081';
+  const petBase = 'http://127.0.0.1:8083';
+  final shotDir = Directory('build/ux-live');
+  const rootKey = ValueKey<String>('ux-live-root');
+
+  Future<void> shot(WidgetTester tester, String name) async {
+    final boundary = tester.renderObject<RenderRepaintBoundary>(
+      find.byKey(rootKey),
+    );
+    await tester.runAsync(() async {
+      if (!shotDir.existsSync()) shotDir.createSync(recursive: true);
+      final image = await boundary.toImage(pixelRatio: 1.5);
+      final bytes = await image.toByteData(format: ImageByteFormat.png);
+      final path = '${shotDir.path}/$name.png';
+      File(path).writeAsBytesSync(bytes!.buffer.asUint8List());
+      debugPrint('[shot] $name → $path (${bytes.lengthInBytes} bytes)');
+    });
+  }
+
+  Future<void> pumpUntil(
+    WidgetTester tester,
+    Finder finder, {
+    Duration timeout = const Duration(seconds: 25),
+  }) 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：$finder');
+  }
+
+  Future<void> pumpUntilGone(
+    WidgetTester tester,
+    Finder finder, {
+    Duration timeout = const Duration(seconds: 25),
+  }) async {
+    final deadline = DateTime.now().add(timeout);
+    while (DateTime.now().isBefore(deadline)) {
+      await tester.pump(const Duration(milliseconds: 250));
+      if (finder.evaluate().isEmpty) return;
+    }
+    fail('等待消失超时：$finder');
+  }
+
+  /// 直连服务端下单个 JSON 请求（种子数据走真实 HTTP，不绕 DB）。
+  Future<Map<String, dynamic>> postJson(
+    String url,
+    Map<String, Object?> body, {
+    String? bearer,
+  }) async {
+    final client = HttpClient();
+    final request = await client.postUrl(Uri.parse(url));
+    request.headers.contentType = ContentType.json;
+    if (bearer != null) {
+      request.headers.set(HttpHeaders.authorizationHeader, 'Bearer $bearer');
+    }
+    request.add(utf8.encode(jsonEncode(body)));
+    final response = await request.close();
+    final text = await response.transform(utf8.decoder).join();
+    client.close();
+    expect(response.statusCode, anyOf(200, 201), reason: 'POST $url 失败：$text');
+    final envelope = jsonDecode(text) as Map<String, dynamic>;
+    expect(envelope['code'], 0, reason: 'POST $url 业务码非 0：$text');
+    return envelope['data'] as Map<String, dynamic>;
+  }
+
+  testWidgets('桌面真链路：日期选择器中文/品牌色/手输/今天 + 花费卡实际月份', (tester) async {
+    // ---- 注册一次性账号 + 种子数据（宠物 + 当月一笔就医支出）----
+    final seed = DateTime.now().millisecondsSinceEpoch;
+    final username = 'uxlive$seed';
+    final password = 'Live1234!$seed';
+    await postJson('$authBase/api/v1/auth/register', {
+      'username': username,
+      'phone': '+86137${(seed % 100000000).toString().padLeft(8, '0')}',
+      'password': password,
+    });
+    final tokens = await postJson('$authBase/api/v1/auth/login', {
+      'username': username,
+      'password': password,
+    });
+    final accessToken = tokens['accessToken'] as String;
+    final pet = await postJson('$petBase/api/v1/pets', {
+      'name': '实测豆豆',
+      'species': 'dog',
+      'sex': 'male',
+      'customBreedName': '中华田园犬',
+    }, bearer: accessToken);
+    final petId = pet['id'] as String;
+    // 当月一笔 128.50 元就医支出：花费卡应显示「N 月花费 ¥128.50」——
+    // 用户那次误录（记到 4 月）看到 ¥0 正是因为记录不在当月窗口内。
+    await postJson('$petBase/api/v1/pets/$petId/health-events', {
+      'eventType': 'medical',
+      'occurredAt': DateTime.now().toUtc().toIso8601String(),
+      'title': '皮肤检查',
+      'amountCents': 12850,
+    }, bearer: accessToken);
+
+    // ---- 启动真实 App ----
+    await tester.pumpWidget(
+      RepaintBoundary(
+        key: rootKey,
+        child: 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'));
+
+    // ---- 档案 Tab → 建档表单 ----
+    await pumpUntil(tester, find.text('档案'));
+    await tester.tap(find.text('档案'));
+    // 列表已有种子宠物 → 走虚线「＋ 添加宠物」卡（空态 CTA 文案不同）。
+    await pumpUntil(tester, find.textContaining('添加宠物'));
+    await tester.tap(find.textContaining('添加宠物').first);
+    await pumpUntil(tester, find.byType(PetFormPage));
+    await shot(tester, '01-pet-form');
+
+    // ---- 生日日期选择器：全中文 + 品牌配色 ----
+    await tester.tap(find.widgetWithText(ListTile, '生日（可选）'));
+    await pumpUntil(tester, find.byType(DatePickerDialog));
+    await tester.pump(const Duration(milliseconds: 600));
+    await shot(tester, '02-date-picker-zh');
+
+    expect(find.text('选择日期'), findsOneWidget, reason: '标题非中文');
+    expect(find.text('确定'), findsOneWidget);
+    expect(find.text('取消'), findsOneWidget);
+    expect(find.text('Select date'), findsNothing);
+    expect(find.text('OK'), findsNothing);
+
+    final inkColors = tester
+        .widgetList<Ink>(find.byType(Ink))
+        .map((ink) => ink.decoration)
+        .whereType<ShapeDecoration>()
+        .map((d) => d.color)
+        .toList();
+    expect(
+      inkColors,
+      contains(AppColors.primaryStrong),
+      reason: '选中日仍是 fromSeed 派生的暗红棕，未取品牌 primaryStrong',
+    );
+
+    // ---- 手输模式：中文标签 + 敲入已知日期 ----
+    await tester.tap(find.byIcon(Icons.edit_outlined));
+    await pumpUntil(tester, find.text('输入日期'));
+    await shot(tester, '03-date-input-zh');
+    final field = find.descendant(
+      of: find.byType(DatePickerDialog),
+      matching: find.byType(TextField),
+    );
+    await tester.enterText(field, '2024/03/15');
+    await tester.pump(const Duration(milliseconds: 300));
+    await tester.tap(find.text('确定'));
+    await pumpUntil(tester, find.text('2024-03-15'));
+    await shot(tester, '04-date-typed');
+
+    // ---- 「今天」快捷键：一键落今天，不开弹窗 ----
+    final todayText =
+        '${DateTime.now().year}-'
+        '${DateTime.now().month.toString().padLeft(2, '0')}-'
+        '${DateTime.now().day.toString().padLeft(2, '0')}';
+    await tester.tap(find.widgetWithText(TextButton, '今天'));
+    await pumpUntil(tester, find.text(todayText));
+    expect(find.byType(DatePickerDialog), findsNothing, reason: '「今天」不该开弹窗');
+    await shot(tester, '05-today-shortcut');
+
+    // ---- 退出建档表单（本单不验建档链路，宠物与支出已由 API 种下）----
+    await tester.tap(find.byIcon(Icons.arrow_back));
+    await pumpUntilGone(tester, find.byType(PetFormPage));
+
+    // ---- 详情页：花费卡展示实际月份 + chevron 可点提示 ----
+    await pumpUntil(tester, find.text('实测豆豆'));
+    await shot(tester, '06-pets-list');
+    await tester.tap(find.text('实测豆豆'));
+    await pumpUntil(tester, find.byType(PetDetailPage));
+    final monthLabel = '${DateTime.now().month} 月花费';
+    await pumpUntil(tester, find.text(monthLabel));
+    await tester.pump(const Duration(milliseconds: 600));
+    await shot(tester, '07-pet-detail-expense-card');
+
+    expect(find.text('本月花费'), findsNothing, reason: '仍是硬编码「本月花费」');
+    // 当月真有支出 → 卡片给出金额（月份口径自证：记录落在当月才计入）。
+    expect(find.text('¥128.50'), findsOneWidget);
+    expect(
+      find.ancestor(
+        of: find.text(monthLabel),
+        matching: find.widgetWithIcon(Card, Icons.chevron_right),
+      ),
+      findsOneWidget,
+      reason: '花费卡缺 chevron 可点提示',
+    );
+  }, skip: !enabled);
+}

lib/app/app.dart

@@ -5,6 +5,7 @@ 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/app/app_localization.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';
@@ -268,6 +269,11 @@ class _AppState extends State<App> {
       title: 'Patbond',
       debugShowCheckedModeBanner: false,
       theme: buildAppTheme(),
+      // M3.5-01：Material 内置组件中文化（此前未配 delegate，日期选择器等
+      // 全部回退英文兜底）。单语言 zh-CN，不随设备语言回退英文。
+      localizationsDelegates: appLocalizationsDelegates,
+      supportedLocales: appSupportedLocales,
+      locale: appLocale,
       navigatorObservers: [_routeObserver],
       home: ListenableBuilder(
         listenable: sessionManager,

lib/app/app_localization.dart

@@ -0,0 +1,31 @@
+/// 应用本地化配置（M3.5-01）。
+///
+/// 根因备忘：M3 之前 [MaterialApp] 未配任何 `localizationsDelegates`，
+/// Flutter 回退到内置的 `DefaultMaterialLocalizations`（仅英文），导致
+/// 一切 Material 内置组件（日期选择器标题「Select date」、确定/取消
+/// 「OK」/「Cancel」、模式切换 tooltip「Switch to input」、格式报错
+/// 「Invalid format.」）全英文，而业务自绘文案全中文——同一弹窗内中英混排。
+/// 挂上三件套后分别为「选择日期 / 确定 / 取消 / 切换到输入模式 / 格式无效。」。
+///
+/// 这里把三件套 delegate 与 locale 收在一处，供 `App` 与 widget 测试共用：
+/// 测试若只 `pumpWidget(MaterialApp(home: ...))` 而不带 delegate，看到的仍是
+/// 英文兜底，与真机不一致；需要断言中文渲染的测试请一并挂上本文件的常量。
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+
+/// Material / Cupertino / Widgets 三件套本地化 delegate。
+const List<LocalizationsDelegate<Object>> appLocalizationsDelegates =
+    <LocalizationsDelegate<Object>>[
+      GlobalMaterialLocalizations.delegate,
+      GlobalCupertinoLocalizations.delegate,
+      GlobalWidgetsLocalizations.delegate,
+    ];
+
+/// 简体中文（中国大陆）。M3.5 仅单语言，暂不做语言切换。
+const Locale appLocale = Locale('zh', 'CN');
+
+/// 支持语言列表。仅 zh-CN——避免设备语言为英文时回退到英文，
+/// 造成同一界面内业务中文 + 组件英文的混排。
+const List<Locale> appSupportedLocales = <Locale>[appLocale];

lib/core/theme/app_theme.dart

@@ -176,6 +176,7 @@ ThemeData buildAppTheme() {
         borderRadius: BorderRadius.all(Radius.circular(AppRadius.md)),
       ),
     ),
+    datePickerTheme: _datePickerTheme,
     navigationBarTheme: NavigationBarThemeData(
       backgroundColor: AppColors.surface,
       indicatorColor: AppColors.surfaceTint,
@@ -194,3 +195,102 @@ ThemeData buildAppTheme() {
     ),
   );
 }
+
+/// 日期选择器主题（M3.5-01）。
+///
+/// 根因备忘：此前未定制，`showDatePicker` 完全走 `ColorScheme.fromSeed`
+/// 由珊瑚橙 `#FF6F4C` 派生出的 M3 调和色（选中日为暗红棕实底），
+/// 与全 app 品牌色脱节。这里只复用 05 号规范（iteration-2/05、iteration-3/05）
+/// 已审计过的色对，不新造色值：
+///
+/// | 位置 | 色对 | 对比度 | 来源 |
+/// | --- | --- | --- | --- |
+/// | 头部（帮助文字 + 标题 + 模式切换图标） | `surfaceTint` 底 + `primaryDark` | 7.98:1 | 选中 chip 同款（iteration-2/05 §3 D7） |
+/// | 选中日 / 选中年 | `primaryStrong` 底 + 白字 | 4.49:1 | FAB / 头像徽标同款（同 §2） |
+/// | 今日（未选中）描边与文字 | 白底 + `primaryStrong` | 4.49:1 | 同上 |
+/// | 未选中日 / 年 | 白底 + `ink` | ≥12:1 | 正文主色 |
+/// | 星期表头 | 白底 + `inkSoft` | 6.59:1 | 承载信息的次级文字（§3 DEBT-2） |
+/// | 越界不可选日 | 白底 + `muted` | 3.36:1 | 禁用态，DEBT-2 允许的 `muted` 用途 |
+/// | 确定 / 取消按钮 | 白底 + `primaryStrong` 文字 | 4.49:1 | 可点击文字链接（§1.1 token 注释） |
+final DatePickerThemeData _datePickerTheme = DatePickerThemeData(
+  backgroundColor: AppColors.surface,
+  elevation: 0,
+  surfaceTintColor: Colors.transparent,
+  shadowColor: Colors.transparent,
+  shape: const RoundedRectangleBorder(
+    borderRadius: BorderRadius.all(Radius.circular(AppRadius.xl)),
+    side: BorderSide(color: AppColors.border),
+  ),
+  dividerColor: AppColors.border,
+  headerBackgroundColor: AppColors.surfaceTint,
+  headerForegroundColor: AppColors.primaryDark,
+  headerHelpStyle: const TextStyle(
+    color: AppColors.primaryDark,
+    fontSize: 12,
+    fontWeight: FontWeight.w600,
+  ),
+  headerHeadlineStyle: const TextStyle(
+    color: AppColors.primaryDark,
+    // 22（默认 32 偏大）：中文 `formatMediumDate` 是「9月10日周四」5~6 字，
+    // 横屏侧栏头部宽度下 26 起就会折行，22 一行放得下。
+    fontSize: 22,
+    fontWeight: FontWeight.w800,
+  ),
+  // 年份下拉 / 上下月箭头一行：与头部同族深色，白底 8.74:1。
+  subHeaderForegroundColor: AppColors.primaryDark,
+  weekdayStyle: const TextStyle(
+    color: AppColors.inkSoft,
+    fontSize: 12,
+    fontWeight: FontWeight.w600,
+  ),
+  dayStyle: const TextStyle(fontSize: 14, fontWeight: FontWeight.w600),
+  dayForegroundColor: WidgetStateProperty.resolveWith((states) {
+    if (states.contains(WidgetState.disabled)) return AppColors.muted;
+    if (states.contains(WidgetState.selected)) return Colors.white;
+    return AppColors.ink;
+  }),
+  dayBackgroundColor: WidgetStateProperty.resolveWith((states) {
+    if (states.contains(WidgetState.selected)) return AppColors.primaryStrong;
+    return null;
+  }),
+  dayOverlayColor: WidgetStateProperty.resolveWith((states) {
+    if (states.contains(WidgetState.selected)) return Colors.white24;
+    return AppColors.primary.withAlpha(31);
+  }),
+  todayForegroundColor: WidgetStateProperty.resolveWith((states) {
+    if (states.contains(WidgetState.disabled)) return AppColors.muted;
+    if (states.contains(WidgetState.selected)) return Colors.white;
+    return AppColors.primaryStrong;
+  }),
+  todayBackgroundColor: WidgetStateProperty.resolveWith((states) {
+    if (states.contains(WidgetState.selected)) return AppColors.primaryStrong;
+    return null;
+  }),
+  // 今日始终带描边（选中态由实底承载，未选中态靠 1.5px 描边定位）：
+  // `primaryStrong` 白底 4.49:1，超过非文字元素 3:1 门槛。
+  todayBorder: const BorderSide(color: AppColors.primaryStrong, width: 1.5),
+  yearStyle: const TextStyle(fontSize: 15, fontWeight: FontWeight.w600),
+  yearForegroundColor: WidgetStateProperty.resolveWith((states) {
+    if (states.contains(WidgetState.disabled)) return AppColors.muted;
+    if (states.contains(WidgetState.selected)) return Colors.white;
+    return AppColors.ink;
+  }),
+  yearBackgroundColor: WidgetStateProperty.resolveWith((states) {
+    if (states.contains(WidgetState.selected)) return AppColors.primaryStrong;
+    return null;
+  }),
+  yearOverlayColor: WidgetStateProperty.resolveWith((states) {
+    if (states.contains(WidgetState.selected)) return Colors.white24;
+    return AppColors.primary.withAlpha(31);
+  }),
+  cancelButtonStyle: TextButton.styleFrom(
+    foregroundColor: AppColors.inkSoft,
+    minimumSize: const Size(64, 44),
+    textStyle: const TextStyle(fontSize: 14, fontWeight: FontWeight.w600),
+  ),
+  confirmButtonStyle: TextButton.styleFrom(
+    foregroundColor: AppColors.primaryStrong,
+    minimumSize: const Size(64, 44),
+    textStyle: const TextStyle(fontSize: 14, fontWeight: FontWeight.w700),
+  ),
+);

lib/core/widgets/app_date_picker.dart

@@ -0,0 +1,144 @@
+/// 日期录入共享层（M3.5-02）。
+///
+/// 根因备忘：全仓 7 处 `showDatePicker` 各写一遍裸调用，用户实测暴露两个问题：
+///
+/// 1. **月份只能靠 `< >` 逐月切**。Flutter 原生日历有年份网格、没有月份网格，
+///    从 9 月回到 4 月要点 5 次箭头。已实际导致误录——用户把当月（2026-09）
+///    的就医记录记成了 2026-04-09，进而误判「本月花费 ¥0」是统计坏了。
+/// 2. **键盘输入模式在英文兜底下不可用**。原生 calendar 模式本就带一枚
+///    切换到手输的铅笔按钮，但未配本地化时按钮 tooltip 是
+///    `Switch to input`、报错是 `Invalid format.`，中文用户看不懂也不敢用。
+///    M3.5-01 挂上 zh-CN delegate 后变成「切换到输入模式」/「格式无效。」/
+///    「超出范围。」，输入框提示也从 `mm/dd/yyyy` 变成中文习惯的
+///    `yyyy/mm/dd`，这条路才真正走通。
+///
+/// 本文件的处置：
+///
+/// - [pickAppDate] 收口 7 处调用：统一 calendar 首屏 + **保留**手输切换
+///   （明确不用 `calendarOnly`——那恰好会砍掉手输这条快路），并把
+///   `initialDate` 夹进 `[firstDate, lastDate]` 防越界断言。各调用点原有的
+///   业务约束（如健康事件 `lastDate: now` 不许未来）由调用方原样传入，不改。
+/// - [AppDateFieldTrailing] 给 7 处日期行统一挂「今天」快捷键：绝大多数录入
+///   就是「记今天的事」，一键落值比开弹窗再找今天更快，也把「月份导航」
+///   这条容易走错的路整段绕开。原生 `showDatePicker` 无法注入自定义动作
+///   （`builder` 只能包裹整个 Dialog，拿不到它的内部选中态），所以快捷键
+///   放在调用方表单行而非弹窗内。
+library;
+
+import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+
+/// 抹掉时分秒，只留年月日（日期选择器返回值与业务日期字段的统一口径）。
+DateTime dateOnly(DateTime value) =>
+    DateTime(value.year, value.month, value.day);
+
+/// 今天（本地时区，仅日期）。
+DateTime today() => dateOnly(DateTime.now());
+
+/// 判断 [date] 是否落在 `[firstDate, lastDate]` 闭区间内（按日粒度）。
+bool isDateSelectable({
+  required DateTime date,
+  required DateTime firstDate,
+  required DateTime lastDate,
+}) {
+  final day = dateOnly(date);
+  return !day.isBefore(dateOnly(firstDate)) && !day.isAfter(dateOnly(lastDate));
+}
+
+/// 全仓统一的日期选择入口。
+///
+/// [initialDate] 会被夹进 `[firstDate, lastDate]`——调用方常传「当前值 ?? 今天」，
+/// 而部分表单的 `firstDate` 就是今天（如提醒到期日），历史值可能已越界。
+///
+/// 返回 `null` 表示用户取消；返回值已抹掉时分秒。
+Future<DateTime?> pickAppDate({
+  required BuildContext context,
+  required DateTime initialDate,
+  required DateTime firstDate,
+  required DateTime lastDate,
+}) async {
+  final first = dateOnly(firstDate);
+  final last = dateOnly(lastDate);
+  var initial = dateOnly(initialDate);
+  if (initial.isBefore(first)) initial = first;
+  if (initial.isAfter(last)) initial = last;
+
+  final picked = await showDatePicker(
+    context: context,
+    initialDate: initial,
+    firstDate: first,
+    lastDate: last,
+    // calendar 首屏 + 头部铅笔按钮切手输：日期不确定时翻日历，日期已知时
+    // 一行敲完。不用 calendarOnly（砍掉手输）、不用 input 首屏（多数录入
+    // 是「今天/最近几天」，日历一眼可点，手输反而更慢）。
+    initialEntryMode: DatePickerEntryMode.calendar,
+    // 帮助文字/确定/取消/手输提示与格式报错全部交给 zh-CN 本地化
+    // （appLocalizationsDelegates），不在此硬编码中文，避免两处文案漂移。
+  );
+  return picked == null ? null : dateOnly(picked);
+}
+
+/// 日期行尾部（7 处日期 [ListTile] 统一形态）：「今天」快捷键 + 日历图标。
+///
+/// - 「今天」直接把字段落到今天，不开弹窗；今天越界（业务不允许）时按钮
+///   自动隐藏，只留日历图标。
+/// - 触控目标 44×44（项目最小触控口径），文字 `primaryStrong` 白底 4.49:1。
+class AppDateFieldTrailing extends StatelessWidget {
+  const AppDateFieldTrailing({
+    required this.firstDate,
+    required this.lastDate,
+    required this.onToday,
+    super.key,
+    this.enabled = true,
+  });
+
+  /// 业务允许的最早日期（与 [pickAppDate] 同一约束）。
+  final DateTime firstDate;
+
+  /// 业务允许的最晚日期。
+  final DateTime lastDate;
+
+  /// 点「今天」的回调，入参为今天（仅日期）。
+  final ValueChanged<DateTime> onToday;
+
+  /// 表单提交中等禁用态。
+  final bool enabled;
+
+  @override
+  Widget build(BuildContext context) {
+    final now = today();
+    final showToday = isDateSelectable(
+      date: now,
+      firstDate: firstDate,
+      lastDate: lastDate,
+    );
+    return Row(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        if (showToday)
+          Tooltip(
+            message: '设为今天',
+            child: TextButton(
+              onPressed: enabled ? () => onToday(now) : null,
+              style: TextButton.styleFrom(
+                foregroundColor: AppColors.primaryStrong,
+                disabledForegroundColor: AppColors.muted,
+                minimumSize: const Size(44, 44),
+                padding: const EdgeInsets.symmetric(horizontal: 8),
+                textStyle: const TextStyle(
+                  fontSize: 13,
+                  fontWeight: FontWeight.w700,
+                ),
+              ),
+              child: const Text('今天'),
+            ),
+          ),
+        const Icon(
+          Icons.calendar_month_outlined,
+          size: 20,
+          color: AppColors.muted,
+        ),
+      ],
+    );
+  }
+}

lib/features/pets/care_reminder_form_page.dart

@@ -2,6 +2,7 @@ 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_date_picker.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';
@@ -265,14 +266,22 @@ class _CareReminderFormPageState extends State<CareReminderFormPage> {
                 _dueDate == null ? '未选择' : dateToJson(_dueDate!),
                 style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
               ),
-              trailing: const Icon(
+              trailing: AppDateFieldTrailing(
-                Icons.calendar_month_outlined,
+                firstDate: DateTime.now(),
-                color: AppColors.muted,
+                lastDate: DateTime(DateTime.now().year + 5),
+                enabled: !_submitting,
+                onToday: (value) {
+                  _markStarted();
+                  setState(() {
+                    _dueDate = value;
+                    _dueError = null;
+                  });
+                },
               ),
               enabled: !_submitting,
               onTap: () async {
                 final now = DateTime.now();
-                final value = await showDatePicker(
+                final value = await pickAppDate(
                   context: context,
                   initialDate: _dueDate ?? now,
                   firstDate: now,

lib/features/pets/care_reminders_page.dart

@@ -3,6 +3,7 @@ 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_date_picker.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';
@@ -484,7 +485,7 @@ class _CompleteDialogState extends State<_CompleteDialog> {
             ),
             onTap: () async {
               final now = DateTime.now();
-              final value = await showDatePicker(
+              final value = await pickAppDate(
                 context: context,
                 initialDate: _date,
                 firstDate: DateTime(1990),
@@ -494,6 +495,11 @@ class _CompleteDialogState extends State<_CompleteDialog> {
                 setState(() => _date = value);
               }
             },
+            trailing: AppDateFieldTrailing(
+              firstDate: DateTime(1990),
+              lastDate: DateTime.now(),
+              onToday: (value) => setState(() => _date = value),
+            ),
           ),
         ],
       ),

lib/features/pets/health_event_form_page.dart

@@ -2,6 +2,7 @@ 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_date_picker.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';
@@ -269,14 +270,19 @@ class _HealthEventFormPageState extends State<HealthEventFormPage> {
                 dateToJson(_occurredDate),
                 style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
               ),
-              trailing: const Icon(
+              trailing: AppDateFieldTrailing(
-                Icons.calendar_month_outlined,
+                firstDate: DateTime(1990),
-                color: AppColors.muted,
+                lastDate: DateTime.now(),
+                enabled: !_submitting,
+                onToday: (value) {
+                  _markStarted();
+                  setState(() => _occurredDate = value);
+                },
               ),
               enabled: !_submitting,
               onTap: () async {
                 final now = DateTime.now();
-                final value = await showDatePicker(
+                final value = await pickAppDate(
                   context: context,
                   initialDate: _occurredDate,
                   firstDate: DateTime(1990),

lib/features/pets/health_record_display.dart

@@ -125,6 +125,27 @@ String healthEventMonthHeader(DateTime occurredAt) {
   return '${local.year} 年 ${local.month} 月';
 }
 
+/// 月度花费卡标签（M3.5-03）。
+///
+/// 根因备忘：卡片标签此前硬编码「本月花费」，用户无法自证「本月」到底是
+/// 哪个月——他把当月记录误录到 2026-04 后看到「本月花费 ¥0」，以为聚合坏了。
+/// 服务端 `summary.monthlyExpense.month` 本就返回 ISO year-month（如 `2026-09`，
+/// 按 `tz` 归月），直接展示即可自查，无需改后端。
+///
+/// [month] 形如 `2026-09`。窄卡（一行四卡）只放得下 4~5 个字，故取「9 月花费」
+/// 而非「2026-09 花费」；跨年（服务端归月的年份与设备当前年份不一致，如设备
+/// 已跨到 1 月而窗口仍是去年 12 月）时补年份消歧。解析失败退回「本月花费」。
+String monthlyExpenseCardLabel(String month, {DateTime? now}) {
+  final match = RegExp(r'^(\d{4})-(\d{2})$').firstMatch(month);
+  if (match == null) return '本月花费';
+  final year = int.parse(match.group(1)!);
+  final monthNo = int.parse(match.group(2)!);
+  if (monthNo < 1 || monthNo > 12) return '本月花费';
+  final currentYear = (now ?? DateTime.now()).year;
+  if (year != currentYear) return '$year/$monthNo 花费';
+  return '$monthNo 月花费';
+}
+
 /// 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) {

lib/features/pets/pet_detail_page.dart

@@ -532,7 +532,9 @@ class _PetDetailPageState extends State<PetDetailPage> {
                   // 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',
+                  // M3.5-03：标签展示服务端归月的实际月份（此前硬编码
+                  // 「本月花费」，用户无法自证记录落在哪个月）。
+                  label: monthlyExpenseCardLabel(expense.month),
                   onTap: () => _openTimeline(pet),
                 ),
               ),
@@ -545,6 +547,13 @@ class _PetDetailPageState extends State<PetDetailPage> {
 
 /// 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）。
+///
+/// M3.5-03：可点卡（[onTap] 非空）右上角补 `chevron_right`——四张卡本都可点进
+/// 明细页，但此前无任何视觉提示，用户实测反馈不知道能点。提示形态沿用项目
+/// 既有可点行/卡（宠物列表卡、健康提醒卡、资料页设置行）的 `chevron_right`，
+/// 不自创。同时 [MergeSemantics] 把「数值 + 标签」并进 InkWell 的 button 节点，
+/// 读屏一次读全「¥0，9 月花费，按钮」，而不是两段孤立文字（tap 动作仍在
+/// InkWell 上，不用 `excludeSemantics` 以免连带丢掉可激活性）。
 class _SummaryCard extends StatelessWidget {
   const _SummaryCard({
     required this.icon,
@@ -564,7 +573,8 @@ class _SummaryCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Card(
+    return MergeSemantics(
+      child: Card(
         child: InkWell(
           onTap: onTap,
           borderRadius: BorderRadius.circular(AppRadius.xl),
@@ -572,8 +582,19 @@ class _SummaryCard extends StatelessWidget {
             padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 12),
             child: Column(
               crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Row(
                   children: [
                     Icon(icon, size: 18, color: iconColor),
+                    const Spacer(),
+                    if (onTap != null)
+                      const Icon(
+                        Icons.chevron_right,
+                        size: 16,
+                        color: AppColors.muted,
+                      ),
+                  ],
+                ),
                 const SizedBox(height: 8),
                 Text(
                   value,
@@ -590,12 +611,16 @@ class _SummaryCard extends StatelessWidget {
                   label,
                   maxLines: 1,
                   overflow: TextOverflow.ellipsis,
-                style: const TextStyle(color: AppColors.inkSoft, fontSize: 11),
+                  style: const TextStyle(
+                    color: AppColors.inkSoft,
+                    fontSize: 11,
+                  ),
                 ),
               ],
             ),
           ),
         ),
+      ),
     );
   }
 }

lib/features/pets/pet_form_page.dart

@@ -2,6 +2,7 @@ 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_date_picker.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';
@@ -659,14 +660,19 @@ class _PetFormPageState extends State<PetFormPage> {
         _birthDate == null ? '未填写' : dateToJson(_birthDate!),
         style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
       ),
-      trailing: const Icon(
+      trailing: AppDateFieldTrailing(
-        Icons.calendar_month_outlined,
+        firstDate: DateTime(1990),
-        color: AppColors.muted,
+        lastDate: DateTime.now(),
+        enabled: !_submitting,
+        onToday: (value) {
+          _markStarted();
+          setState(() => _birthDate = value);
+        },
       ),
       enabled: !_submitting,
       onTap: () async {
         final now = DateTime.now();
-        final value = await showDatePicker(
+        final value = await pickAppDate(
           context: context,
           initialDate: _birthDate ?? DateTime(now.year - 1, now.month),
           firstDate: DateTime(1990),

lib/features/pets/vaccination_form_page.dart

@@ -2,6 +2,7 @@ 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_date_picker.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';
@@ -503,14 +504,21 @@ class _VaccinationFormPageState extends State<VaccinationFormPage> {
         value == null ? '未选择' : dateToJson(value),
         style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
       ),
-      trailing: const Icon(
+      trailing: AppDateFieldTrailing(
-        Icons.calendar_month_outlined,
+        firstDate: DateTime(1990),
-        color: AppColors.muted,
+        lastDate: allowFuture
+            ? DateTime(DateTime.now().year + 5)
+            : DateTime.now(),
+        enabled: !_submitting,
+        onToday: (value) {
+          _markStarted();
+          onPicked(value);
+        },
       ),
       enabled: !_submitting,
       onTap: () async {
         final now = DateTime.now();
-        final picked = await showDatePicker(
+        final picked = await pickAppDate(
           context: context,
           initialDate: value ?? now,
           firstDate: DateTime(1990),

lib/features/pets/vaccination_records_page.dart

@@ -3,6 +3,7 @@ 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_date_picker.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';
@@ -514,9 +515,19 @@ class _CompleteVaccinationDialogState
         value == null ? '未选择' : dateToJson(value),
         style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
       ),
+      trailing: AppDateFieldTrailing(
+        firstDate: DateTime(1990),
+        lastDate: allowFuture
+            ? DateTime(DateTime.now().year + 5)
+            : DateTime.now(),
+        onToday: (picked) => setState(() {
+          onPicked(picked);
+          _dateError = null;
+        }),
+      ),
       onTap: () async {
         final now = DateTime.now();
-        final picked = await showDatePicker(
+        final picked = await pickAppDate(
           context: context,
           initialDate: value ?? now,
           firstDate: DateTime(1990),

lib/features/pets/weight_form_page.dart

@@ -2,6 +2,7 @@ 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_date_picker.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';
@@ -241,14 +242,19 @@ class _WeightFormPageState extends State<WeightFormPage> {
                 dateToJson(_measuredDate),
                 style: const TextStyle(color: AppColors.inkSoft, fontSize: 12),
               ),
-              trailing: const Icon(
+              trailing: AppDateFieldTrailing(
-                Icons.calendar_month_outlined,
+                firstDate: DateTime(1990),
-                color: AppColors.muted,
+                lastDate: DateTime.now(),
+                enabled: !_submitting,
+                onToday: (value) {
+                  _markStarted();
+                  setState(() => _measuredDate = value);
+                },
               ),
               enabled: !_submitting,
               onTap: () async {
                 final now = DateTime.now();
-                final value = await showDatePicker(
+                final value = await pickAppDate(
                   context: context,
                   initialDate: _measuredDate,
                   firstDate: DateTime(1990),

pubspec.lock

@@ -235,6 +235,11 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.0.0"
+  flutter_localizations:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
@@ -399,6 +404,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  intl:
+    dependency: "direct main"
+    description:
+      name: intl
+      sha256: "3df61194eb431efc39c4ceba583b95633a403f46c9fd341e550ce0bfa50e9aa5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.20.2"
   jni:
     dependency: transitive
     description:

pubspec.yaml

@@ -43,6 +43,13 @@ dependencies:
   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
+  # M3.5-01 中文本地化：Material/Cupertino/Widgets 内置组件文案（日期选择器
+  # 标题、确定/取消、输入模式提示与格式错误）由 Global*Localizations 提供。
+  flutter_localizations:
+    sdk: flutter
+  # flutter_localizations 的日期符号/数字格式底座；显式直接依赖以锁定与 SDK
+  # 一致的版本（避免间接依赖升级悄悄改变格式化行为）。
+  intl: ^0.20.2
 
 dev_dependencies:
   flutter_test:

test/app/app_localization_test.dart

@@ -0,0 +1,49 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:patbond_flutter/app/app.dart';
+import 'package:patbond_flutter/app/app_localization.dart';
+import 'package:patbond_flutter/features/auth/session_manager.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../helpers/auth_test_helpers.dart';
+import '../helpers/community_test_helpers.dart';
+import '../helpers/pet_test_helpers.dart';
+
+/// M3.5-01：根 [MaterialApp] 实际挂上 zh-CN 本地化。
+///
+/// 用户桌面实测反馈「日期选择器全英文」的根因就在这里——delegate 一行没配，
+/// Material 静默回退英文兜底。本测试守住这一行不被回删。
+void main() {
+  testWidgets('MaterialApp 挂三件套 delegate + 单语言 zh-CN', (tester) async {
+    SharedPreferences.setMockInitialValues({});
+    final session = SessionManager(store: InMemoryTokenStore())
+      ..markAuthenticated();
+
+    await tester.pumpWidget(
+      App(
+        sessionManager: session,
+        authRepository: FakeAuthRepository(),
+        petsRepository: FakePetsRepository(),
+        communityRepository: FakeCommunityRepository()
+          ..onFeed = (_, _) async => feedPage(const []),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    final app = tester.widget<MaterialApp>(find.byType(MaterialApp));
+    expect(app.localizationsDelegates, appLocalizationsDelegates);
+    expect(app.supportedLocales, appSupportedLocales);
+    expect(app.locale, const Locale('zh', 'CN'));
+
+    // 运行期实际解析出的 Material 文案为中文（不是 Default* 英文兜底）。
+    final context = tester.element(find.byType(NavigationBar));
+    final l10n = MaterialLocalizations.of(context);
+    expect(l10n.okButtonLabel, '确定');
+    expect(l10n.cancelButtonLabel, '取消');
+    expect(l10n.datePickerHelpText, '选择日期');
+    expect(l10n.dateInputLabel, '输入日期');
+    expect(l10n.inputDateModeButtonLabel, '切换到输入模式');
+    expect(l10n.invalidDateFormatLabel, '格式无效。');
+    expect(l10n.formatMonthYear(DateTime(2026, 9, 10)), '2026年9月');
+  });
+}

test/core/widgets/app_date_picker_test.dart

@@ -0,0 +1,385 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:patbond_flutter/app/app_localization.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
+import 'package:patbond_flutter/core/widgets/app_date_picker.dart';
+
+/// M3.5-01/02：日期录入共享层。
+///
+/// 覆盖三条用户实测反馈：中文文案实际渲染、键盘输入模式可用、「今天」快捷键。
+void main() {
+  /// 挂真实 app 配置（主题 + zh-CN delegate）的宿主：不挂 delegate 的话
+  /// Material 会回退英文兜底，测出来的「中文」是假的。
+  Widget host(Widget child) => MaterialApp(
+    theme: buildAppTheme(),
+    localizationsDelegates: appLocalizationsDelegates,
+    supportedLocales: appSupportedLocales,
+    locale: appLocale,
+    home: Scaffold(body: child),
+  );
+
+  group('dateOnly / today / isDateSelectable', () {
+    test('dateOnly 抹掉时分秒', () {
+      expect(
+        dateOnly(DateTime(2026, 4, 9, 23, 59, 58, 777)),
+        DateTime(2026, 4, 9),
+      );
+    });
+
+    test('today 为本地当天零点', () {
+      final now = DateTime.now();
+      expect(today(), DateTime(now.year, now.month, now.day));
+    });
+
+    test('isDateSelectable 闭区间按日粒度判定', () {
+      final first = DateTime(2026, 9, 1);
+      final last = DateTime(2026, 9, 30, 8, 30);
+      expect(
+        isDateSelectable(
+          date: DateTime(2026, 9, 1),
+          firstDate: first,
+          lastDate: last,
+        ),
+        isTrue,
+      );
+      // 边界当天含时分也算落在区间内（lastDate 的时分不该把当天挤出去）。
+      expect(
+        isDateSelectable(
+          date: DateTime(2026, 9, 30, 23, 0),
+          firstDate: first,
+          lastDate: last,
+        ),
+        isTrue,
+      );
+      expect(
+        isDateSelectable(
+          date: DateTime(2026, 8, 31),
+          firstDate: first,
+          lastDate: last,
+        ),
+        isFalse,
+      );
+      expect(
+        isDateSelectable(
+          date: DateTime(2026, 10, 1),
+          firstDate: first,
+          lastDate: last,
+        ),
+        isFalse,
+      );
+    });
+  });
+
+  group('pickAppDate · 中文本地化实际渲染', () {
+    testWidgets('日历模式：标题/确定/取消全中文（此前为 Select date / OK / Cancel）', (
+      tester,
+    ) async {
+      await tester.pumpWidget(
+        host(
+          Builder(
+            builder: (context) => TextButton(
+              onPressed: () => pickAppDate(
+                context: context,
+                initialDate: DateTime(2026, 9, 10),
+                firstDate: DateTime(1990),
+                lastDate: DateTime(2026, 9, 30),
+              ),
+              child: const Text('打开'),
+            ),
+          ),
+        ),
+      );
+
+      await tester.tap(find.text('打开'));
+      await tester.pumpAndSettle();
+
+      expect(find.text('选择日期'), findsOneWidget);
+      expect(find.text('确定'), findsOneWidget);
+      expect(find.text('取消'), findsOneWidget);
+      expect(find.text('Select date'), findsNothing);
+      expect(find.text('OK'), findsNothing);
+      expect(find.text('Cancel'), findsNothing);
+    });
+
+    testWidgets('保留手输切换按钮（不用 calendarOnly），切换后提示与标签为中文', (tester) async {
+      await tester.pumpWidget(
+        host(
+          Builder(
+            builder: (context) => TextButton(
+              onPressed: () => pickAppDate(
+                context: context,
+                initialDate: DateTime(2026, 9, 10),
+                firstDate: DateTime(1990),
+                lastDate: DateTime(2026, 9, 30),
+              ),
+              child: const Text('打开'),
+            ),
+          ),
+        ),
+      );
+
+      await tester.tap(find.text('打开'));
+      await tester.pumpAndSettle();
+
+      // calendarOnly 会砍掉这枚铅笔按钮——手输是「录一个已知日期」的快路，
+      // 必须留着。
+      final toggle = find.byIcon(Icons.edit_outlined);
+      expect(toggle, findsOneWidget);
+
+      await tester.tap(toggle);
+      await tester.pumpAndSettle();
+
+      expect(find.text('输入日期'), findsOneWidget);
+      expect(find.byType(TextField), findsOneWidget);
+      final field = tester.widget<TextField>(find.byType(TextField));
+      // 手输提示/标签由 zh-CN 本地化提供（不硬编码），不再是 mm/dd/yyyy。
+      expect(field.decoration!.labelText, isNot(contains('Date')));
+      expect(field.decoration!.hintText, isNot('mm/dd/yyyy'));
+    });
+
+    testWidgets('手输模式敲入已知日期即可返回（无需逐月点箭头）', (tester) async {
+      DateTime? picked;
+      await tester.pumpWidget(
+        host(
+          Builder(
+            builder: (context) => TextButton(
+              onPressed: () async {
+                picked = await pickAppDate(
+                  context: context,
+                  initialDate: DateTime(2026, 9, 10),
+                  firstDate: DateTime(1990),
+                  lastDate: DateTime(2026, 9, 30),
+                );
+              },
+              child: const Text('打开'),
+            ),
+          ),
+        ),
+      );
+
+      await tester.tap(find.text('打开'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.byIcon(Icons.edit_outlined));
+      await tester.pumpAndSettle();
+
+      await tester.enterText(find.byType(TextField), '2026/04/09');
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('确定'));
+      await tester.pumpAndSettle();
+
+      expect(picked, DateTime(2026, 4, 9));
+    });
+
+    testWidgets('取消返回 null；确认返回值已抹掉时分秒', (tester) async {
+      DateTime? picked;
+      var calls = 0;
+      await tester.pumpWidget(
+        host(
+          Builder(
+            builder: (context) => TextButton(
+              onPressed: () async {
+                calls++;
+                picked = await pickAppDate(
+                  context: context,
+                  initialDate: DateTime(2026, 9, 10, 15, 30),
+                  firstDate: DateTime(1990),
+                  lastDate: DateTime(2026, 9, 30),
+                );
+              },
+              child: const Text('打开'),
+            ),
+          ),
+        ),
+      );
+
+      await tester.tap(find.text('打开'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('取消'));
+      await tester.pumpAndSettle();
+      expect(calls, 1);
+      expect(picked, isNull);
+
+      await tester.tap(find.text('打开'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('确定'));
+      await tester.pumpAndSettle();
+      expect(picked, DateTime(2026, 9, 10));
+    });
+
+    testWidgets('initialDate 越界自动夹进 [firstDate, lastDate]（不触发原生断言）', (
+      tester,
+    ) async {
+      DateTime? picked;
+      await tester.pumpWidget(
+        host(
+          Builder(
+            builder: (context) => TextButton(
+              onPressed: () async {
+                // 历史值早于 firstDate：如「提醒到期日」firstDate 是今天，
+                // 而表单预填的是一个已过期的旧值。
+                picked = await pickAppDate(
+                  context: context,
+                  initialDate: DateTime(2020, 1, 1),
+                  firstDate: DateTime(2026, 9, 1),
+                  lastDate: DateTime(2026, 9, 30),
+                );
+              },
+              child: const Text('打开'),
+            ),
+          ),
+        ),
+      );
+
+      await tester.tap(find.text('打开'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('确定'));
+      await tester.pumpAndSettle();
+
+      expect(picked, DateTime(2026, 9, 1));
+    });
+  });
+
+  group('AppDateFieldTrailing · 「今天」快捷键', () {
+    testWidgets('点「今天」直接回调今天，不开弹窗', (tester) async {
+      DateTime? got;
+      await tester.pumpWidget(
+        host(
+          AppDateFieldTrailing(
+            firstDate: DateTime(1990),
+            lastDate: DateTime(2100),
+            onToday: (value) => got = value,
+          ),
+        ),
+      );
+
+      expect(find.text('今天'), findsOneWidget);
+      expect(find.byIcon(Icons.calendar_month_outlined), findsOneWidget);
+
+      await tester.tap(find.text('今天'));
+      await tester.pumpAndSettle();
+
+      expect(got, today());
+      // 快捷键不经日期选择器（少两次点击、绕开月份导航）。
+      expect(find.text('选择日期'), findsNothing);
+    });
+
+    testWidgets('今天越界时隐藏按钮，只留日历图标', (tester) async {
+      await tester.pumpWidget(
+        host(
+          AppDateFieldTrailing(
+            firstDate: DateTime(1990),
+            lastDate: DateTime(1999, 12, 31),
+            onToday: (_) {},
+          ),
+        ),
+      );
+
+      expect(find.text('今天'), findsNothing);
+      expect(find.byIcon(Icons.calendar_month_outlined), findsOneWidget);
+    });
+
+    testWidgets('enabled=false（提交中）按钮禁用', (tester) async {
+      var calls = 0;
+      await tester.pumpWidget(
+        host(
+          AppDateFieldTrailing(
+            firstDate: DateTime(1990),
+            lastDate: DateTime(2100),
+            enabled: false,
+            onToday: (_) => calls++,
+          ),
+        ),
+      );
+
+      expect(
+        tester.widget<TextButton>(find.byType(TextButton)).onPressed,
+        isNull,
+      );
+      await tester.tap(find.text('今天'), warnIfMissed: false);
+      await tester.pumpAndSettle();
+      expect(calls, 0);
+    });
+
+    testWidgets('触控目标不小于 44×44', (tester) async {
+      await tester.pumpWidget(
+        host(
+          AppDateFieldTrailing(
+            firstDate: DateTime(1990),
+            lastDate: DateTime(2100),
+            onToday: (_) {},
+          ),
+        ),
+      );
+
+      final size = tester.getSize(find.byType(TextButton));
+      expect(size.width, greaterThanOrEqualTo(44));
+      expect(size.height, greaterThanOrEqualTo(44));
+    });
+  });
+
+  group('datePickerTheme · 品牌配色（不再是 fromSeed 的暗红棕）', () {
+    test('选中日/选中年为 primaryStrong 实底白字，今日 primaryStrong 描边', () {
+      final theme = buildAppTheme().datePickerTheme;
+      const selected = <WidgetState>{WidgetState.selected};
+
+      expect(
+        theme.dayBackgroundColor!.resolve(selected),
+        AppColors.primaryStrong,
+      );
+      expect(theme.dayForegroundColor!.resolve(selected), Colors.white);
+      expect(
+        theme.yearBackgroundColor!.resolve(selected),
+        AppColors.primaryStrong,
+      );
+      expect(theme.yearForegroundColor!.resolve(selected), Colors.white);
+      expect(theme.todayBorder!.color, AppColors.primaryStrong);
+      expect(
+        theme.todayForegroundColor!.resolve(const {}),
+        AppColors.primaryStrong,
+      );
+      // 头部沿用「选中 chip」既有色对：surfaceTint 底 + primaryDark 字 7.98:1。
+      expect(theme.headerBackgroundColor, AppColors.surfaceTint);
+      expect(theme.headerForegroundColor, AppColors.primaryDark);
+      expect(theme.backgroundColor, AppColors.surface);
+      // 越界不可选日走禁用态 muted（DEBT-2 允许的 muted 用途）。
+      expect(
+        theme.dayForegroundColor!.resolve(const {WidgetState.disabled}),
+        AppColors.muted,
+      );
+    });
+
+    testWidgets('实际渲染：选中日圆底取 primaryStrong', (tester) async {
+      await tester.pumpWidget(
+        host(
+          Builder(
+            builder: (context) => TextButton(
+              onPressed: () => pickAppDate(
+                context: context,
+                initialDate: DateTime(2026, 9, 10),
+                firstDate: DateTime(1990),
+                lastDate: DateTime(2026, 9, 30),
+              ),
+              child: const Text('打开'),
+            ),
+          ),
+        ),
+      );
+      await tester.tap(find.text('打开'));
+      await tester.pumpAndSettle();
+
+      // 选中日的圆底由 Ink(decoration: ShapeDecoration) 承载，色值取自
+      // datePickerTheme.dayBackgroundColor / todayBackgroundColor。
+      final inkColors = tester
+          .widgetList<Ink>(find.byType(Ink))
+          .map((ink) => ink.decoration)
+          .whereType<ShapeDecoration>()
+          .map((d) => d.color)
+          .toList();
+      expect(
+        inkColors,
+        contains(AppColors.primaryStrong),
+        reason: '选中日未使用品牌 primaryStrong 实底（仍是 fromSeed 派生色）',
+      );
+    });
+  });
+}

test/features/pets/care_reminder_form_page_test.dart

@@ -1,7 +1,9 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:patbond_flutter/app/app_localization.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_date_picker.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/pet_exceptions.dart';
@@ -34,6 +36,10 @@ void main() {
     await tester.pumpWidget(
       MaterialApp(
         theme: buildAppTheme(),
+        // M3.5-01：与生产一致挂 zh-CN delegate。
+        localizationsDelegates: appLocalizationsDelegates,
+        supportedLocales: appSupportedLocales,
+        locale: appLocale,
         home: Builder(
           builder: (context) => Scaffold(
             body: Center(
@@ -67,7 +73,7 @@ void main() {
     );
     await tester.tap(find.text('到期日期'));
     await tester.pumpAndSettle();
-    await tester.tap(find.text('OK'));
+    await tester.tap(find.text('确定'));
     await tester.pumpAndSettle();
   }
 
@@ -124,4 +130,36 @@ void main() {
     expect(failed[1]!['failureReason'], 'network_error');
     expect(failed[1]!['attemptSeq'], 2);
   });
+
+  group('M3.5-02 · 到期日期录入（firstDate 就是今天的那一格）', () {
+    testWidgets('未选日期时也有「今天」快捷键；一键落今天并清掉必填校验错', (tester) async {
+      await pumpForm(tester);
+
+      // 先触发必填校验错。
+      await tester.tap(find.text('保存提醒'));
+      await tester.pumpAndSettle();
+      expect(find.text('未选择'), findsOneWidget);
+
+      await tester.tap(find.text('今天'));
+      await tester.pumpAndSettle();
+
+      expect(find.text(dateToJson(DateTime.now())), findsOneWidget);
+      expect(find.text('未选择'), findsNothing);
+      expect(find.text('选择日期'), findsNothing);
+    });
+
+    testWidgets('业务约束不变：firstDate 今天（不许补记过去）、lastDate 五年后', (tester) async {
+      await pumpForm(tester);
+
+      await tester.tap(find.widgetWithText(ListTile, '到期日期'));
+      await tester.pumpAndSettle();
+
+      final dialog = tester.widget<DatePickerDialog>(
+        find.byType(DatePickerDialog),
+      );
+      expect(dialog.firstDate, dateOnly(DateTime.now()));
+      expect(dialog.lastDate, DateTime(DateTime.now().year + 5));
+      expect(find.text('选择日期'), findsOneWidget);
+    });
+  });
 }

test/features/pets/care_reminders_page_test.dart

@@ -3,6 +3,7 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/app/app_localization.dart';
 import 'package:patbond_flutter/core/theme/app_theme.dart';
 import 'package:patbond_flutter/core/widgets/empty_state_illustration.dart';
 import 'package:patbond_flutter/features/pets/care_reminder_form_page.dart';
@@ -39,6 +40,11 @@ void main() {
     await tester.pumpWidget(
       MaterialApp(
         theme: buildAppTheme(),
+        // M3.5-01：与生产一致挂 zh-CN delegate，日期选择器等内置组件文案
+        // 才是用户真机看到的中文。
+        localizationsDelegates: appLocalizationsDelegates,
+        supportedLocales: appSupportedLocales,
+        locale: appLocale,
         home: const Scaffold(body: Text('详情基底')),
       ),
     );
@@ -206,7 +212,7 @@ void main() {
     );
     await tester.tap(find.text('到期日期'));
     await tester.pumpAndSettle();
-    await tester.tap(find.text('OK'));
+    await tester.tap(find.text('确定'));
     await tester.pumpAndSettle();
     await tester.tap(find.text('保存提醒'));
     await tester.pumpAndSettle();

test/features/pets/health_event_form_page_test.dart

@@ -1,7 +1,11 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:patbond_flutter/app/app_localization.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_date_picker.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/pet_exceptions.dart';
@@ -34,6 +38,11 @@ void main() {
     await tester.pumpWidget(
       MaterialApp(
         theme: buildAppTheme(),
+        // M3.5-01：与生产一致挂 zh-CN delegate，否则测里的日期选择器是
+        // 英文兜底，测不出用户真机看到的东西。
+        localizationsDelegates: appLocalizationsDelegates,
+        supportedLocales: appSupportedLocales,
+        locale: appLocale,
         home: Builder(
           builder: (context) => Scaffold(
             body: Center(
@@ -192,4 +201,77 @@ void main() {
     expect(failed[2]!['failureReason'], 'network_error');
     expect(failed[2]!['attemptSeq'], 3);
   });
+
+  group('M3.5-02 · 日期录入（用户误录 2026-04 的那一格）', () {
+    testWidgets('点「今天」直接落今天，不开弹窗；同时算首次输入触发 started', (tester) async {
+      await pumpForm(tester);
+
+      final expected = dateToJson(DateTime.now());
+      // 先把日期改成远月，模拟用户翻错月份后的状态。
+      await tester.tap(find.widgetWithText(ListTile, '发生日期'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.byIcon(Icons.edit_outlined));
+      await tester.pumpAndSettle();
+      await tester.enterText(
+        find.descendant(
+          of: find.byType(DatePickerDialog),
+          matching: find.byType(TextField),
+        ),
+        '2026/04/09',
+      );
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('确定'));
+      await tester.pumpAndSettle();
+      expect(find.text('2026-04-09'), findsOneWidget);
+
+      // 一键回今天：不经日期选择器。
+      await tester.tap(find.text('今天'));
+      await tester.pumpAndSettle();
+
+      expect(find.text(expected), findsOneWidget);
+      expect(find.text('选择日期'), findsNothing);
+      expect(eventsOf('health_record_create_started'), hasLength(1));
+    });
+
+    testWidgets('选择器为中文，且业务约束不变（firstDate 1990 / lastDate 今天，不许未来）', (
+      tester,
+    ) async {
+      await pumpForm(tester);
+
+      await tester.tap(find.widgetWithText(ListTile, '发生日期'));
+      await tester.pumpAndSettle();
+
+      expect(find.text('选择日期'), findsOneWidget);
+      expect(find.text('确定'), findsOneWidget);
+      expect(find.text('取消'), findsOneWidget);
+      // 手输快路可达（原生 calendarOnly 会砍掉它）。
+      expect(find.byIcon(Icons.edit_outlined), findsOneWidget);
+
+      final dialog = tester.widget<DatePickerDialog>(
+        find.byType(DatePickerDialog),
+      );
+      expect(dialog.firstDate, DateTime(1990));
+      expect(dialog.lastDate, dateOnly(DateTime.now()));
+    });
+
+    testWidgets('提交中禁用「今天」快捷键', (tester) async {
+      final gate = Completer<HealthEvent>();
+      repository.createHealthEventHandler = (petId, req) => gate.future;
+      await pumpForm(tester);
+      await fillValid(tester);
+
+      await tester.tap(find.text('保存记录'));
+      await tester.pump();
+
+      expect(
+        tester
+            .widget<TextButton>(find.widgetWithText(TextButton, '今天'))
+            .onPressed,
+        isNull,
+      );
+
+      gate.complete(buildHealthEvent('he-1'));
+      await tester.pumpAndSettle();
+    });
+  });
 }

test/features/pets/health_record_display_test.dart

@@ -277,4 +277,30 @@ void main() {
       expect(reminderStatusColor(dismissed, now), AppColors.muted);
     });
   });
+
+  group('M3.5-03 · monthlyExpenseCardLabel（花费卡展示实际月份）', () {
+    test('同年只给月份，卡片一行放得下（不再硬编码「本月花费」）', () {
+      final now = DateTime(2026, 9, 10);
+      expect(monthlyExpenseCardLabel('2026-09', now: now), '9 月花费');
+      // 用户误录场景：记录落在 4 月，卡片就该明说是 4 月，而不是「本月」。
+      expect(monthlyExpenseCardLabel('2026-04', now: now), '4 月花费');
+      expect(monthlyExpenseCardLabel('2026-12', now: now), '12 月花费');
+      expect(monthlyExpenseCardLabel('2026-01', now: now), '1 月花费');
+    });
+
+    test('跨年（服务端归月年份 ≠ 设备当前年份）补年份消歧', () {
+      // 设备已跨到 2027-01，服务端 tz 窗口仍落在 2026-12。
+      final now = DateTime(2027, 1, 1);
+      expect(monthlyExpenseCardLabel('2026-12', now: now), '2026/12 花费');
+    });
+
+    test('月份串非法退回「本月花费」（不崩、不显示脏值）', () {
+      final now = DateTime(2026, 9, 10);
+      expect(monthlyExpenseCardLabel('', now: now), '本月花费');
+      expect(monthlyExpenseCardLabel('2026-9', now: now), '本月花费');
+      expect(monthlyExpenseCardLabel('2026-13', now: now), '本月花费');
+      expect(monthlyExpenseCardLabel('2026-00', now: now), '本月花费');
+      expect(monthlyExpenseCardLabel('2026-09-01', now: now), '本月花费');
+    });
+  });
 }

test/features/pets/pet_detail_page_test.dart

@@ -188,12 +188,24 @@ void main() {
   });
 
   group('T2-13 · 数据卡行接 summary', () {
-    testWidgets('四卡取数：最新体重 / 疫苗进度 / 下一针 / 本月花费（tz 透传）', (tester) async {
+    testWidgets('四卡取数：最新体重 / 疫苗进度 / 下一针 / 当月花费（tz 透传）', (tester) async {
       repository.getPetHandler = (petId) async => buildPet('p-1');
       String? capturedTz;
+      // M3.5-03：花费卡标签展示服务端归月的实际月份，故样本月份取「本月」，
+      // 断言不随年份漂移（跨年格式另由 monthlyExpenseCardLabel 单测覆盖）。
+      final now = DateTime.now();
+      final thisMonth = '${now.year}-${now.month.toString().padLeft(2, '0')}';
       repository.getPetSummaryHandler = (petId, tz) async {
         capturedTz = tz;
-        return buildSummary();
+        return buildSummary(
+          overrides: {
+            'monthlyExpense': {
+              'month': thisMonth,
+              'timezone': 'Asia/Shanghai',
+              'amountCents': 12850,
+            },
+          },
+        );
       };
 
       await pumpDetail(tester);
@@ -208,12 +220,45 @@ void main() {
       expect(find.text('下一针·狂犬疫苗'), findsOneWidget);
       // T2-14：月度花费卡接 monthlyExpense（12850 分 → 元展示）。
       expect(find.text('¥128.50'), findsOneWidget);
-      expect(find.text('本月花费'), findsOneWidget);
+      // M3.5-03：不再硬编码「本月花费」，展示实际月份便于用户自查。
+      expect(find.text('${now.month} 月花费'), findsOneWidget);
+      expect(find.text('本月花费'), findsNothing);
       // T2-13 遗留③：tz 透传设备时区固定偏移（月度窗口随设备时区）。
       expect(capturedTz, tzOffsetQueryValue(DateTime.now().timeZoneOffset));
       expect(capturedTz, matches(RegExp(r'^[+-]\d{2}:\d{2}$')));
     });
 
+    testWidgets('M3.5-03 · 四张数据卡均有 chevron 可点提示', (tester) async {
+      repository.getPetHandler = (petId) async => buildPet('p-1');
+      final now = DateTime.now();
+      final thisMonth = '${now.year}-${now.month.toString().padLeft(2, '0')}';
+      repository.getPetSummaryHandler = (petId, tz) async => buildSummary(
+        overrides: {
+          'monthlyExpense': {
+            'month': thisMonth,
+            'timezone': 'Asia/Shanghai',
+            'amountCents': 0,
+          },
+        },
+      );
+
+      await pumpDetail(tester);
+      await tester.pumpAndSettle();
+
+      // 四张 stat 卡都挂了 onTap，此前无任何视觉提示；现统一补
+      // chevron_right（与宠物列表卡 / 健康提醒卡同款）。
+      for (final label in ['最新体重', '疫苗进度', '下一针·狂犬疫苗', '${now.month} 月花费']) {
+        expect(
+          find.ancestor(
+            of: find.text(label),
+            matching: find.widgetWithIcon(Card, Icons.chevron_right),
+          ),
+          findsOneWidget,
+          reason: '「$label」卡缺可点提示',
+        );
+      }
+    });
+
     testWidgets('null 语义：无登记显示空态而非 0/0', (tester) async {
       repository.getPetHandler = (petId) async => buildPet('p-1');
       repository.getPetSummaryHandler = (petId, tz) async => buildSummary(
@@ -302,12 +347,22 @@ void main() {
   });
 
   group('T2-14 · 时间线入口', () {
-    testWidgets('点本月花费卡 → 健康时间线页；返回后重拉摘要', (tester) async {
+    testWidgets('点当月花费卡 → 健康时间线页；返回后重拉摘要', (tester) async {
       repository.getPetHandler = (petId) async => buildPet('p-1');
       var summaryCalls = 0;
+      final now = DateTime.now();
+      final thisMonth = '${now.year}-${now.month.toString().padLeft(2, '0')}';
       repository.getPetSummaryHandler = (petId, tz) async {
         summaryCalls++;
-        return buildSummary();
+        return buildSummary(
+          overrides: {
+            'monthlyExpense': {
+              'month': thisMonth,
+              'timezone': 'Asia/Shanghai',
+              'amountCents': 12850,
+            },
+          },
+        );
       };
       repository.listHealthEventsHandler = (petId, limit, cursor) async =>
           const CursorPage(items: [], nextCursor: null, hasMore: false);
@@ -315,7 +370,7 @@ void main() {
       await pumpDetail(tester);
       await tester.pumpAndSettle();
 
-      await tester.tap(find.text('本月花费'));
+      await tester.tap(find.text('${now.month} 月花费'));
       await tester.pumpAndSettle();
 
       expect(find.byType(HealthEventsPage), findsOneWidget);

test/features/pets/vaccination_form_page_test.dart

@@ -3,6 +3,7 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/app/app_localization.dart';
 import 'package:patbond_flutter/core/theme/app_theme.dart';
 import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
 import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
@@ -36,6 +37,11 @@ void main() {
     await tester.pumpWidget(
       MaterialApp(
         theme: buildAppTheme(),
+        // M3.5-01：与生产一致挂 zh-CN delegate，日期选择器等内置组件文案
+        // 才是用户真机看到的中文。
+        localizationsDelegates: appLocalizationsDelegates,
+        supportedLocales: appSupportedLocales,
+        locale: appLocale,
         home: const Scaffold(body: Text('列表基底')),
       ),
     );
@@ -65,7 +71,7 @@ void main() {
   Future<void> pickDate(WidgetTester tester, String tileLabel) async {
     await tester.tap(find.text(tileLabel));
     await tester.pumpAndSettle();
-    await tester.tap(find.text('OK'));
+    await tester.tap(find.text('确定'));
     await tester.pumpAndSettle();
   }
 

test/features/pets/vaccination_records_page_test.dart

@@ -3,6 +3,7 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:patbond_flutter/core/network/api_exception.dart';
+import 'package:patbond_flutter/app/app_localization.dart';
 import 'package:patbond_flutter/core/theme/app_theme.dart';
 import 'package:patbond_flutter/core/widgets/empty_state_illustration.dart';
 import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
@@ -39,6 +40,11 @@ void main() {
     await tester.pumpWidget(
       MaterialApp(
         theme: buildAppTheme(),
+        // M3.5-01：与生产一致挂 zh-CN delegate，日期选择器等内置组件文案
+        // 才是用户真机看到的中文。
+        localizationsDelegates: appLocalizationsDelegates,
+        supportedLocales: appSupportedLocales,
+        locale: appLocale,
         home: const Scaffold(body: Text('详情基底')),
       ),
     );
@@ -166,7 +172,7 @@ void main() {
     await tester.pumpAndSettle();
     await tester.tap(find.text('计划接种日期'));
     await tester.pumpAndSettle();
-    await tester.tap(find.text('OK'));
+    await tester.tap(find.text('确定'));
     await tester.pumpAndSettle();
     await tester.tap(find.text('保存登记'));
     await tester.pumpAndSettle();