新增：体重录入与历史列表接入真实数据（T2-13 体重半边）

- WeightRecordsPage：cursor 分页（加载更多/末页收起/翻页失败保留重试）、
  loading/empty/error/retry 四态、下拉刷新；viewer 隐藏录入入口
- WeightFormPage：weightKg 契约区间 (0,500] 与两位小数前端校验 + 40000
  兜底；称重时间转 UTC 上送；错误三层分层沿用登录纵切
- health_record 域埋点强类型封装（06 §1.4：create_started/succeeded/
  failed + viewed，httpStatus 由业务码推导；viewed 按工单口径取列表曝光）
- health_record_display 纯函数（体重解析/展示、疫苗状态映射、42201
  规则前端拦截函数）；PetsController 暴露 repository（22 号 §7 交接）
- 测试 177 → 205（+28）全绿

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

lib/features/pets/health_record_analytics.dart

@@ -0,0 +1,125 @@
+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；edit/deleted 事件的挂接随
+/// 编辑/删除交互落地（「标记完成」等）另行接线，见 25 号报告遗留。
+
+/// 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;
+}
+
+/// 创建失败原因（06 §1.4 基底 + M2 验收新增三值）。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');
+
+  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,
+    });
+  }
+}

lib/features/pets/health_record_display.dart

@@ -0,0 +1,86 @@
+/// 体重 / 疫苗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/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;
+}

lib/features/pets/pets_controller.dart

@@ -21,6 +21,10 @@ class PetsController extends ChangeNotifier {
 
   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;

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';
+}