feat(apps): refine login consent and calendar day/month UX

apps/lib/features/auth/presentation/cubits/login_cubit.dart

@@ -130,6 +130,7 @@ class LoginCubit extends Cubit<LoginState> {
 
     final requestPhone = state.e164Phone;
     emit(state.copyWith(isSendingCode: true, errorMessage: null));
+    _startResendCooldown();
     try {
       await _repository.sendOtp(requestPhone);
       if (isClosed) {
@@ -146,7 +147,6 @@ class LoginCubit extends Cubit<LoginState> {
           errorMessage: null,
         ),
       );
-      _startResendCooldown();
       return true;
     } catch (e) {
       if (isClosed) {

apps/lib/features/auth/ui/screens/login_screen.dart

@@ -54,6 +54,12 @@ class _LoginViewState extends State<LoginView> {
   }
 
   Future<void> _handleLogin() async {
+    if (!_agreedToTerms) {
+      final confirmed = await _showAgreementDialog();
+      if (!confirmed || !mounted) return;
+      setState(() => _agreedToTerms = true);
+    }
+
     final cubit = context.read<LoginCubit>();
     cubit.phoneChanged(_phoneController.text);
     cubit.codeChanged(_codeController.text);
@@ -70,12 +76,6 @@ class _LoginViewState extends State<LoginView> {
   }
 
   Future<void> _handleSendCode() async {
-    if (!_agreedToTerms) {
-      final confirmed = await _showAgreementDialog();
-      if (!confirmed || !mounted) return;
-      setState(() => _agreedToTerms = true);
-    }
-
     final cubit = context.read<LoginCubit>();
     cubit.phoneChanged(_phoneController.text);
     final sent = await cubit.sendCode();

apps/lib/features/calendar/data/services/calendar_service.dart

@@ -1,4 +1,6 @@
 import 'package:social_app/core/api/i_api_client.dart';
+import 'package:social_app/core/cache/cache_invalidator.dart';
+import 'package:social_app/core/di/injection.dart';
 
 import '../calendar_api.dart';
 import '../models/schedule_item_model.dart';
@@ -37,11 +39,15 @@ class CalendarService {
   }
 
   Future<ScheduleItemModel> addEvent(ScheduleItemModel event) async {
-    return _api.create(event);
+    final created = await _api.create(event);
+    _invalidateEventCache(created);
+    return created;
   }
 
   Future<ScheduleItemModel> updateEvent(ScheduleItemModel event) async {
-    return _api.update(event);
+    final updated = await _api.update(event);
+    _invalidateEventCache(updated);
+    return updated;
   }
 
   Future<ScheduleItemModel?> archiveEvent(String id) async {
@@ -49,10 +55,38 @@ class CalendarService {
     if (event == null) {
       return null;
     }
-    return updateEvent(event.copyWith(status: ScheduleStatus.archived));
+    final updatedEvent = await updateEvent(
+      event.copyWith(status: ScheduleStatus.archived),
+    );
+    _invalidateEventCache(updatedEvent);
+    return updatedEvent;
+  }
+
+  void _invalidateEventCache(ScheduleItemModel event) {
+    try {
+      final invalidator = sl<CacheInvalidator>();
+      var current = DateTime(
+        event.startAt.year,
+        event.startAt.month,
+        event.startAt.day,
+      );
+      final end = DateTime(
+        event.endAt?.year ?? event.startAt.year,
+        event.endAt?.month ?? event.startAt.month,
+        event.endAt?.day ?? event.startAt.day,
+      );
+      while (!current.isAfter(end)) {
+        invalidator.invalidateCalendarDay(current);
+        current = current.add(const Duration(days: 1));
+      }
+    } catch (_) {}
   }
 
   Future<void> deleteEvent(String id) async {
+    final event = await getEventById(id);
+    if (event != null) {
+      _invalidateEventCache(event);
+    }
     await _api.delete(id);
   }
 }

apps/lib/features/calendar/ui/dayweek/day_event_layout_engine.dart

@@ -36,6 +36,7 @@ class DayEventLayoutEngine {
     required DayViewScale scale,
     required double eventAreaLeft,
     required double eventAreaWidth,
+    required DateTime viewDate,
     double columnGap = DayTimelineMetrics.eventColumnGap,
   }) {
     if (events.isEmpty || eventAreaWidth <= 0) {
@@ -44,7 +45,8 @@ class DayEventLayoutEngine {
 
     final sorted =
         events
-            .map(_EventSpan.fromEvent)
+            .map((e) => _EventSpan.fromEvent(e, viewDate))
+            .expand((spans) => spans)
             .where((span) => span.endMinutes > span.startMinutes)
             .toList()
           ..sort((a, b) {
@@ -149,19 +151,73 @@ class _EventSpan {
     required this.endMinutes,
   });
 
-  factory _EventSpan.fromEvent(ScheduleItemModel event) {
-    final start = _minutesOfDay(event.startAt);
-    final end = event.endAt != null ? _minutesOfDay(event.endAt!) : start + 60;
-    final clampedStart = DayTimelineMetrics.clampMinuteOfDay(start);
-    var clampedEnd = DayTimelineMetrics.clampMinuteOfDay(end);
-    if (clampedEnd <= clampedStart) {
-      clampedEnd = DayTimelineMetrics.clampMinuteOfDay(clampedStart + 1);
+  static List<_EventSpan> fromEvent(
+    ScheduleItemModel event,
+    DateTime viewDate,
+  ) {
+    final startAt = event.startAt;
+    final endAt = event.endAt;
+    final viewDateOnly = DateTime(viewDate.year, viewDate.month, viewDate.day);
+    final startDateOnly = DateTime(startAt.year, startAt.month, startAt.day);
+    final endDateOnly = endAt != null
+        ? DateTime(endAt.year, endAt.month, endAt.day)
+        : startDateOnly;
+
+    final startMinOfDay = _minutesOfDay(startAt);
+    final endMinOfDay = endAt != null
+        ? _minutesOfDay(endAt)
+        : startMinOfDay + 60;
+
+    if (endDateOnly.isAfter(startDateOnly)) {
+      if (viewDateOnly.isAtSameMomentAs(startDateOnly)) {
+        final clampedStart = DayTimelineMetrics.clampMinuteOfDay(startMinOfDay);
+        final clampedEnd = DayTimelineMetrics.minutesInDay;
+        if (clampedEnd > clampedStart) {
+          return [
+            _EventSpan(
+              event: event,
+              startMinutes: clampedStart,
+              endMinutes: clampedEnd,
+            ),
+          ];
+        }
+      } else if (viewDateOnly.isAtSameMomentAs(endDateOnly)) {
+        final clampedStart = 0;
+        final clampedEnd = DayTimelineMetrics.clampMinuteOfDay(endMinOfDay);
+        if (clampedEnd > clampedStart) {
+          return [
+            _EventSpan(
+              event: event,
+              startMinutes: clampedStart,
+              endMinutes: clampedEnd,
+            ),
+          ];
+        }
+      } else if (viewDateOnly.isAfter(startDateOnly) &&
+          viewDateOnly.isBefore(endDateOnly)) {
+        return [
+          _EventSpan(
+            event: event,
+            startMinutes: 0,
+            endMinutes: DayTimelineMetrics.minutesInDay,
+          ),
+        ];
+      }
+      return const [];
     }
-    return _EventSpan(
-      event: event,
-      startMinutes: clampedStart,
-      endMinutes: clampedEnd,
-    );
+
+    final clampedStart = DayTimelineMetrics.clampMinuteOfDay(startMinOfDay);
+    var clampedEnd = DayTimelineMetrics.clampMinuteOfDay(endMinOfDay);
+    if (clampedEnd <= clampedStart) {
+      clampedEnd = clampedStart + 1;
+    }
+    return [
+      _EventSpan(
+        event: event,
+        startMinutes: clampedStart,
+        endMinutes: clampedEnd,
+      ),
+    ];
   }
 }
 

apps/lib/features/calendar/ui/dayweek/day_view_scale.dart

@@ -1,6 +1,6 @@
 class DayViewScale {
   static const double defaultHourHeight = 34.0;
-  static const double minHourHeight = 17.0;
+  static const double minHourHeight = 34.0;
   static const double maxHourHeight = 68.0;
 
   final double hourHeight;
@@ -8,7 +8,7 @@ class DayViewScale {
   const DayViewScale({required this.hourHeight});
 
   factory DayViewScale.defaultScale() {
-    return const DayViewScale(hourHeight: defaultHourHeight);
+    return const DayViewScale(hourHeight: minHourHeight);
   }
 
   DayViewScale copyWith({double? hourHeight}) {

apps/lib/features/calendar/ui/screens/calendar_dayweek_screen.dart

@@ -41,6 +41,7 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
   final DayEventLayoutEngine _layoutEngine = const DayEventLayoutEngine();
   final Map<int, Offset> _activePointers = {};
   final ScrollController _dayStripController = ScrollController();
+  final ScrollController _timelineController = ScrollController();
 
   DayViewScale _scale = DayViewScale.defaultScale();
   DayViewScale _pinchStartScale = DayViewScale.defaultScale();
@@ -67,6 +68,7 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
 
     WidgetsBinding.instance.addPostFrameCallback((_) {
       _scrollToSelectedDate();
+      _scrollTimelineToNow();
     });
   }
 
@@ -91,6 +93,7 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
   void dispose() {
     WidgetsBinding.instance.removeObserver(this);
     _dayStripController.dispose();
+    _timelineController.dispose();
     super.dispose();
   }
 
@@ -125,6 +128,7 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
                   onPointerCancel: _handlePointerCancel,
                   behavior: HitTestBehavior.translucent,
                   child: SingleChildScrollView(
+                    controller: _timelineController,
                     child: Padding(
                       padding: const EdgeInsets.only(
                         left: AppSpacing.lg,
@@ -160,6 +164,7 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
     _calendarManager.setSelectedDate(today);
     _updateMonthDates();
     _scrollToSelectedDate(animate: true);
+    _scrollTimelineToNow(animate: true);
     _loadEvents();
   }
 
@@ -194,6 +199,10 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
     if ((nextScale.hourHeight - _scale.hourHeight).abs() < 0.1) {
       return;
     }
+    if (nextScale.hourHeight < _scale.hourHeight &&
+        _scale.hourHeight <= DayViewScale.minHourHeight) {
+      return;
+    }
     setState(() {
       _scale = nextScale;
     });
@@ -410,6 +419,29 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
     _dayStripController.jumpTo(offset);
   }
 
+  void _scrollTimelineToNow({bool animate = false}) {
+    if (!_timelineController.hasClients) {
+      return;
+    }
+    final now = DateTime.now();
+    final minuteOfDay = now.hour * 60 + now.minute;
+    final targetY = _scale.pixelsForMinutes(minuteOfDay);
+    final viewportHeight = _timelineController.position.viewportDimension;
+    final offset = targetY - (viewportHeight / 3);
+    final max = _timelineController.position.maxScrollExtent;
+    final clampedOffset = offset.clamp(0.0, max);
+
+    if (animate) {
+      _timelineController.animateTo(
+        clampedOffset,
+        duration: const Duration(milliseconds: 300),
+        curve: Curves.easeOut,
+      );
+      return;
+    }
+    _timelineController.jumpTo(clampedOffset);
+  }
+
   Widget _buildDayItem(DateTime date, bool isSelected, bool isWeekend) {
     return Column(
       crossAxisAlignment: CrossAxisAlignment.center,
@@ -465,6 +497,7 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
           scale: _scale,
           eventAreaLeft: eventAreaLeft,
           eventAreaWidth: eventAreaWidth,
+          viewDate: _selectedDate,
         );
 
         return SizedBox(
@@ -521,19 +554,17 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
   }) {
     final minute = hour * DayTimelineMetrics.minutesInHour;
     final y = _scale.pixelsForMinutes(minute);
-    final isDisabled = hour == DayTimelineMetrics.hoursInDay;
-    final labelTop = (y - 7).clamp(0.0, boardHeight - 14);
+    final isLastHour = hour == DayTimelineMetrics.hoursInDay;
+    final adjustedY = isLastHour ? boardHeight - 1 : y;
+    final labelTop = (adjustedY - 7).clamp(0.0, boardHeight - 14);
 
     return Stack(
       children: [
         Positioned(
-          top: y,
+          top: adjustedY,
           left: eventAreaLeft,
           right: 0,
-          child: Container(
-            height: 1,
-            color: isDisabled ? AppColors.blue50 : AppColors.border,
-          ),
+          child: Container(height: 1, color: AppColors.border),
         ),
         Positioned(
           top: labelTop,
@@ -545,7 +576,7 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
             style: TextStyle(
               fontSize: 10,
               fontWeight: FontWeight.w600,
-              color: isDisabled ? AppColors.slate300 : AppColors.slate400,
+              color: AppColors.slate400,
             ),
           ),
         ),
@@ -609,10 +640,16 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
     required DayEventLayout layout,
     required double boardHeight,
   }) {
-    final eventColor = resolveEventColor(
-      status: layout.event.status,
-      colorHex: layout.event.metadata?.color,
-    );
+    final isArchived = layout.event.status == ScheduleStatus.archived;
+    Color eventColor;
+    if (isArchived) {
+      eventColor = AppColors.slate400;
+    } else {
+      eventColor = resolveEventColor(
+        status: layout.event.status,
+        colorHex: layout.event.metadata?.color,
+      );
+    }
     final isCompact = layout.visualHeight < 20;
     final tapHeight = layout.visualHeight < _minEventTapHeight
         ? _minEventTapHeight

apps/lib/features/calendar/ui/screens/calendar_event_detail_screen.dart

@@ -320,6 +320,7 @@ class _CalendarEventDetailScreenState extends State<CalendarEventDetailScreen> {
                 const SizedBox(height: AppSpacing.xs),
                 Text(
                   timeRange,
+                  maxLines: 2,
                   style: TextStyle(
                     fontSize: 15,
                     fontWeight: FontWeight.w700,
@@ -507,12 +508,21 @@ class _CalendarEventDetailScreenState extends State<CalendarEventDetailScreen> {
   }
 
   String _formatRangeLabel(DateTime startAt, DateTime? endAt) {
-    final dateLabel =
-        '${startAt.month}月${startAt.day}日 ${_getWeekday(startAt.weekday)}';
+    final startLabel =
+        '${startAt.month}月${startAt.day}日 ${_getWeekday(startAt.weekday)} ${_formatTime(startAt)}';
     if (endAt == null) {
-      return '$dateLabel ${_formatTime(startAt)}';
+      return startLabel;
     }
-    return '$dateLabel ${_formatTime(startAt)} - ${_formatTime(endAt)}';
+    final isSameDay =
+        startAt.year == endAt.year &&
+        startAt.month == endAt.month &&
+        startAt.day == endAt.day;
+    if (isSameDay) {
+      return '$startLabel - ${_formatTime(endAt)}';
+    }
+    final endLabel =
+        '${endAt.month}月${endAt.day}日 ${_getWeekday(endAt.weekday)} ${_formatTime(endAt)}';
+    return '开始: $startLabel\n结束: $endLabel';
   }
 
   Widget _buildStatusBadge(ScheduleStatus status) {

apps/lib/features/calendar/ui/screens/calendar_month_screen.dart

@@ -107,6 +107,9 @@ class _CalendarMonthScreenState extends State<CalendarMonthScreen>
   }
 
   Widget _buildHeader() {
+    final today = DateTime.now();
+    final isNotToday = !isSameDay(_selectedDate, today);
+
     return SizedBox(
       height: 76,
       child: Padding(
@@ -148,6 +151,31 @@ class _CalendarMonthScreenState extends State<CalendarMonthScreen>
                     ),
                   ),
                   const Spacer(),
+                  if (isNotToday)
+                    AppPressable(
+                      borderRadius: BorderRadius.circular(AppRadius.xl),
+                      onTap: _goToToday,
+                      child: Container(
+                        height: 36,
+                        padding: const EdgeInsets.symmetric(horizontal: 12),
+                        decoration: BoxDecoration(
+                          color: AppColors.messageBtnWrap,
+                          borderRadius: BorderRadius.circular(AppRadius.xl),
+                          border: Border.all(color: AppColors.messageBtnBorder),
+                        ),
+                        child: const Center(
+                          child: Text(
+                            '今天',
+                            style: TextStyle(
+                              fontSize: 14,
+                              fontWeight: FontWeight.w600,
+                              color: AppColors.slate700,
+                            ),
+                          ),
+                        ),
+                      ),
+                    ),
+                  if (isNotToday) const SizedBox(width: 8),
                   AppPressable(
                     borderRadius: BorderRadius.circular(AppRadius.full),
                     onTap: () async {
@@ -181,6 +209,20 @@ class _CalendarMonthScreenState extends State<CalendarMonthScreen>
     );
   }
 
+  void _goToToday() {
+    final today = DateTime.now();
+    final targetMonth = DateTime(today.year, today.month, 1);
+    setState(() {
+      _selectedDate = today;
+      if (_currentMonth.year != targetMonth.year ||
+          _currentMonth.month != targetMonth.month) {
+        _currentMonth = targetMonth;
+      }
+    });
+    _calendarManager.setSelectedDate(today);
+    _loadMonthEvents(forceRefresh: true);
+  }
+
   Widget _buildMonthContent() {
     return Column(
       children: [
@@ -280,9 +322,7 @@ class _CalendarMonthScreenState extends State<CalendarMonthScreen>
                     '${AppRoutes.calendarDayWeek}?date=${formatYmd(date)}',
                   );
                 },
-                child: AnimatedContainer(
-                  duration: const Duration(milliseconds: 140),
-                  curve: Curves.easeOut,
+                child: Container(
                   width: 36,
                   height: 36,
                   decoration: BoxDecoration(

apps/lib/features/calendar/ui/widgets/bottom_dock.dart

@@ -26,7 +26,7 @@ class BottomDock extends StatelessWidget {
         left: AppSpacing.xl,
         right: AppSpacing.xl,
         top: AppSpacing.md,
-        bottom: AppSpacing.lg,
+        bottom: AppSpacing.sm,
       ),
       child: Row(
         mainAxisAlignment: MainAxisAlignment.spaceBetween,

docs/plans/2026-03-20-navigation-cache-decoupling-design.md

@@ -22,6 +22,8 @@
 4. 启动体验采用「本地优先 + 后台静默刷新」策略，减少进入 App 的重复请求。
 5. 数据只在必要时刷新：手动下拉、写操作失效、生命周期关键点、缓存策略命中。
 6. 主页按钮语义固定为“回主页”，不再变成“返回上一页”。
+7. 一级页面唯一为 Home，日历日/月视图、待办、设置均为二级页面；二级页面侧滑只允许返回一级页面，不允许直接退出 App。
+8. App 退出入口仅存在于一级页面（Home）。
 
 ### 2.2 非目标
 
@@ -40,14 +42,20 @@
 
 ### 4.1 导航分层
 
-采用两级导航：
+采用分级导航：
 
-1. 一级（主容器）：`StatefulShellRoute.indexedStack`
-   - 分支：Home / Calendar / Todo
-   - 作用：保活分支页面，避免 tab 切换重建。
-2. 二级（分支内部）
-   - Calendar 分支：管理 month/day 主视图切换 + event detail/edit/share 子路由。
-   - Todo 分支：管理 list/detail/edit 子路由。
+1. 一级页面（唯一）：Home
+   - 仅 Home 允许触发系统退出路径。
+2. 二级页面（主业务入口）
+   - Calendar Day/Month
+   - Todo List（Quadrants）
+   - Settings
+   - 规则：二级页面的系统返回/侧滑返回统一回 Home，不允许直接退出 App。
+3. 三级页面（细节页）
+   - Calendar event detail/edit/share
+   - Todo detail/edit
+   - Settings 子页面（account/profile edit 等）
+   - 规则：三级页面返回到上一级（二级或三级上层）。
 
 ### 4.2 状态与数据边界
 
@@ -151,6 +159,13 @@
 2. 硬过期数据需可见提醒（弱提示，不阻断基础浏览）。
 3. 提供稳定手动刷新入口。
 
+### 6.5 日历提醒取消动作的一致性兜底
+
+1. 用户在提醒弹层点击“取消/归档”时，前端必须立即发送归档请求，要求后端立刻将事件归档/过期。
+2. “延迟归档（outbox/pending）”仅在 App 进程不可用（被杀/未启动）时生效，作为离线或冷启动兜底。
+3. App 冷启动或恢复前台后，必须优先冲刷 pending 归档请求，确保最终一致性。
+4. 对用户可见行为要求：点击取消后 UI 立即反映归档状态，网络失败时展示重试提示，并保留 pending 记录。
+
 ## 7. 导航与页面职责重构
 
 ### 7.1 路由重构
@@ -165,6 +180,8 @@
 1. Dock Home 统一执行“切到 Home 分支/`go('/home')`”。
 2. `returnToHomePreserveState` 仅用于非 Dock 的返回策略场景。
 3. 消除 `canPop -> pop` 对主页按钮语义的影响。
+4. 二级页面（Calendar Day/Month、Todo、Settings）统一拦截系统返回和侧滑返回，目标固定为 Home。
+5. App 退出只允许在 Home 页面生效（可采用双击退出或系统默认行为）。
 
 ### 7.3 页面职责收敛
 
@@ -182,6 +199,7 @@
 1. 引入 shell + 分支保活。
 2. Dock 接口改造与主 tab 切换实现。
 3. Home 按钮语义修正。
+4. 建立分级返回约束：二级 -> Home，三级 -> 上一级，退出仅 Home。
 
 ### M2 统一缓存骨架
 
@@ -206,6 +224,7 @@
 1. 清理旧缓存与重复加载逻辑。
 2. 补齐测试与性能观测。
 3. 评估参数并收敛默认策略。
+4. 验证提醒“点击取消即实时归档”与“App 关闭时延迟归档兜底”双路径。
 
 ## 9. 验收标准
 
@@ -215,18 +234,21 @@
 2. 日/月切换响应明显变快。
 3. 首次冷启动可先看到本地缓存内容。
 4. Dock Home 始终回主页。
+5. 二级页面侧滑返回永远回 Home，不直接退出 App。
 
 ### 9.2 网络验收
 
 1. 切换页面时网络请求显著减少。
 2. 写操作后关联数据可及时更新。
 3. 手动刷新可强制拉取并回写缓存。
+4. 提醒取消动作触发实时归档请求，成功率可观测。
 
 ### 9.3 一致性验收
 
 1. 不出现旧响应覆盖新数据。
 2. 离线后恢复在线可自动静默同步。
 3. 软过期/硬过期行为符合策略定义。
+4. 提醒归档在在线/离线/冷启动场景下保持最终一致。
 
 ## 10. 测试与验证计划
 
@@ -241,12 +263,15 @@
 1. Dock 切换不重建分支主页面。
 2. 日/月切换不重复触发全量加载。
 3. Home 按钮行为稳定。
+4. 二级页面系统返回不会触发 App 退出。
 
 ### 10.3 集成回归
 
 1. Calendar -> Todo -> Calendar 多轮切换请求计数。
 2. Todo 完成后列表更新与缓存一致性。
 3. profile 更新后设置页/其他依赖页可见一致。
+4. 提醒取消 -> 立即归档 -> 日历列表刷新链路。
+5. App 杀进程后触发提醒，重启后 pending 归档自动冲刷。
 
 ## 11. 风险与回滚
 

docs/plans/2026-03-20-navigation-cache-decoupling-implementation-plan.md

@@ -2,14 +2,61 @@
 
 > **For Claude:** REQUIRED SUB-SKILL: Use superpowers:executing-plans to implement this plan task-by-task.
 
-**Goal:** 完成 Home/Calendar/Todo 的解耦切换与统一缓存改造，实现本地优先显示、后台静默刷新、写后精准失效，并修复 Dock 回主页语义。
+**Goal:** 完成导航分级回退（一级唯一 Home）与统一缓存改造，实现本地优先显示、后台静默刷新、写后精准失效，并落地“提醒取消即实时归档 + App 关闭时延迟归档兜底”。
 
-**Architecture:** 路由层采用 `StatefulShellRoute.indexedStack` 维持主分支保活；数据层新增 `core/cache` 统一缓存模块（memory + persistent + hybrid）；业务层通过 repository 接入缓存策略，页面仅负责发意图和渲染状态。写操作触发精准失效，读取遵循 soft/hard TTL + minimum refresh interval。
+**Architecture:** 路由层采用“一级唯一 Home + 二级业务页 + 三级细节页”的分级返回模型，二级页面返回统一回 Home，退出入口仅 Home；数据层新增 `core/cache` 统一缓存模块（memory + persistent + hybrid）；业务层通过 repository 接入缓存策略与失效器。提醒动作采用实时归档优先，pending outbox 仅用于 App 不可用场景兜底。
 
 **Tech Stack:** Flutter, go_router, get_it, shared_preferences, flutter_test, mocktail
 
 ---
 
+### Task 0: 锁定导航分级与退出语义（一级/二级/三级）
+
+**Files:**
+- Modify: `apps/lib/core/router/app_router.dart`
+- Modify: `apps/lib/features/home/ui/navigation/home_return_policy.dart`
+- Modify: `apps/lib/features/calendar/ui/screens/calendar_dayweek_screen.dart`
+- Modify: `apps/lib/features/calendar/ui/screens/calendar_month_screen.dart`
+- Modify: `apps/lib/features/todo/ui/screens/todo_quadrants_screen.dart`
+- Modify: `apps/lib/features/settings/ui/screens/settings_screen.dart`
+- Test: `apps/test/features/home/ui/navigation/home_return_policy_test.dart`
+
+**Step 1: Write the failing test**
+
+```dart
+test('second-level pages should return to home instead of exiting app', () {
+  final action = resolveHomeReturnAction(
+    canPop: false,
+    isAuthEntry: false,
+    forceGoHome: true,
+  );
+  expect(action, HomeReturnAction.goHome);
+});
+```
+
+**Step 2: Run test to verify it fails**
+
+Run: `cd apps && flutter test test/features/home/ui/navigation/home_return_policy_test.dart`
+Expected: FAIL with old return behavior.
+
+**Step 3: Write minimal implementation**
+
+```dart
+if (forceGoHome) return HomeReturnAction.goHome;
+```
+
+**Step 4: Run tests to verify they pass**
+
+Run: `cd apps && flutter test test/features/home/ui/navigation/home_return_policy_test.dart`
+Expected: PASS.
+
+**Step 5: Commit**
+
+```bash
+git add apps/lib/core/router/app_router.dart apps/lib/features/home/ui/navigation/home_return_policy.dart apps/lib/features/calendar/ui/screens/calendar_dayweek_screen.dart apps/lib/features/calendar/ui/screens/calendar_month_screen.dart apps/lib/features/todo/ui/screens/todo_quadrants_screen.dart apps/lib/features/settings/ui/screens/settings_screen.dart apps/test/features/home/ui/navigation/home_return_policy_test.dart
+git commit -m "feat: enforce hierarchical back navigation and home-only exit"
+```
+
 ### Task 1: 建立统一缓存核心模型与策略
 
 **Files:**
@@ -376,7 +423,54 @@ git add apps/lib/core/cache/cache_refresh_coordinator.dart apps/lib/main.dart ap
 git commit -m "feat: add app lifecycle refresh coordinator"
 ```
 
-### Task 9: 全量验证与文档同步
+### Task 9: 提醒取消实时归档与延迟归档兜底收敛
+
+**Files:**
+- Modify: `apps/lib/features/calendar/reminders/reminder_action_executor.dart`
+- Modify: `apps/lib/features/calendar/reminders/ui/reminder_foreground_presenter.dart`
+- Modify: `apps/lib/core/notifications/local_notification_service.dart`
+- Modify: `apps/lib/main.dart`
+- Modify: `apps/test/features/calendar/reminders/reminder_action_executor_test.dart`
+- Modify: `apps/test/features/calendar/reminders/reminder_notification_bridge_test.dart`
+
+**Step 1: Write the failing test**
+
+```dart
+test('archive action should send remote archive immediately when app active', () async {
+  // Arrange active app + online gateway
+  // Act archive action
+  // Assert remote archive called once and local pending outbox not created
+});
+```
+
+**Step 2: Run test to verify it fails**
+
+Run: `cd apps && flutter test test/features/calendar/reminders/reminder_action_executor_test.dart`
+Expected: FAIL with delayed-only behavior.
+
+**Step 3: Write minimal implementation**
+
+```dart
+if (isAppActive) {
+  await repository.archiveNow(eventId);
+} else {
+  await outbox.enqueueArchive(eventId);
+}
+```
+
+**Step 4: Run tests to verify they pass**
+
+Run: `cd apps && flutter test test/features/calendar/reminders/reminder_action_executor_test.dart test/features/calendar/reminders/reminder_notification_bridge_test.dart`
+Expected: PASS.
+
+**Step 5: Commit**
+
+```bash
+git add apps/lib/features/calendar/reminders/reminder_action_executor.dart apps/lib/features/calendar/reminders/ui/reminder_foreground_presenter.dart apps/lib/core/notifications/local_notification_service.dart apps/lib/main.dart apps/test/features/calendar/reminders/reminder_action_executor_test.dart apps/test/features/calendar/reminders/reminder_notification_bridge_test.dart
+git commit -m "fix: prioritize realtime reminder archive with cold-start fallback"
+```
+
+### Task 10: 全量验证与文档同步
 
 **Files:**
 - Modify: `docs/protocols/*`（仅当路由/数据契约文档需更新时）
@@ -409,6 +503,8 @@ Expected: No errors.
 3. 日/月切换不触发无必要请求。
 4. Dock Home 始终回主页。
 5. 写后数据可见一致，失败可回滚提示。
+6. 二级页面侧滑返回只回 Home，不直接退出。
+7. 提醒点击取消时立刻归档；仅在 App 不可用时走 pending 兜底。
 
 **Step 5: Commit**
 
@@ -419,16 +515,17 @@ git commit -m "docs: finalize navigation decoupling and unified cache rollout"
 
 ## 实施顺序约束
 
-1. 必须先完成 Task 1-3 再改业务页面（否则会出现重复实现）。
-2. Task 5（路由壳层）与 Task 6/7（业务接入）要分开提交，便于回滚。
+1. 必须先完成 Task 0-3 再改业务页面（否则会出现重复实现）。
+2. Task 0（分级返回）与 Task 5（路由壳层）要分开提交，便于单独回滚。
 3. 每个 Task 的测试必须在本 Task 完成后立即执行，避免堆积回归。
 4. 不允许在未通过 focused tests 的情况下进入全量验证。
 
 ## 回滚策略
 
-1. 若导航回归：回滚 Task 5 提交，保留缓存模块提交。
+1. 若返回语义回归：先回滚 Task 0 提交，再评估 Task 5。
 2. 若缓存一致性异常：优先回滚 Task 6/7 的 repository 接入提交。
 3. 若生命周期刷新过于频繁：关闭 Task 8 coordinator 挂载，保留手动刷新兜底。
+4. 若提醒实时归档异常：回滚 Task 9，仅保留 outbox 兜底路径。
 
 ## Done 定义
 
@@ -436,3 +533,5 @@ git commit -m "docs: finalize navigation decoupling and unified cache rollout"
 2. 主页按钮行为稳定，无“返回上一页”误行为。
 3. 切换页面请求数明显下降，写后一致性符合设计预期。
 4. 统一缓存已接管用户信息、日历、待办三域。
+5. 二级页面不再可直接侧滑退出 App。
+6. 提醒归档满足“实时优先、关闭兜底”策略。