feat: compose Android app and verify native calendar and reminders

.gitignore

@@ -8,3 +8,6 @@ android/local.properties
 *.log
 .superpowers/
 dist/
+artifacts/*.xml
+artifacts/emulator-*.txt
+artifacts/screenshots/probe-state*.png

README.md

@@ -1,47 +1,56 @@
-# 河畔 Everyday
+# 河畔Everyday
 
-电子科技大学研究生课表 APP。采用 Flutter，优先 Android，后续支持 iOS。
+电子科技大学研究生课表 APP，Flutter 实现，Android 首版 0.1.0+1，Android 7.0 及以上。iOS 尚未配置。
 
-当前阶段：Android 开发环境已配置，首版设计文件已确认，实现计划待审核；尚未生成业务代码或 APP 安装包。
+已实现：周一至周日、11 节学校作息、跨节课程条形卡片、课程详情与冲突提示、两个无文字图标的玻璃悬浮 Dock、单色/多彩设置、学期开始日/周数设置、JSON 预览导入、本地保存/备份恢复、课前通知及手机日历同步。
 
-## 开发环境
+学校认证提供自绘登录入口与官方 WebView。**本人登录、验证码及研究生课表自动识别仍待真实页面联调**，目前不会假装成功导入。详见 [学校接入状态](docs/school-integration-status.md)。
 
-项目工具与缓存放在 `.tools/`，不会进入版本控制。使用官方发行版及 SHA-256 校验：
+## 体验
 
-- Flutter 3.47.7 稳定版，Dart 3.13.5。
-- Microsoft OpenJDK 17.0.20.1。
-- Android 命令行工具 22.0、Android API 36、Build Tools 36.0.0、Platform Tools。
-- Flutter 配套 NDK 28.2.13676358、CMake 3.22.1。
-- 可选 Android Emulator 与 Android 16（API 36）Google APIs x86_64 镜像。
+安装 `dist/hepan-everyday-debug.apk`。这是开发测试包，不是商店发布包。首次打开点“体验示例课表”即可预览；示例课程不会写入手机日历或触发通知。
 
-在 Windows PowerShell 中，进入本目录后，安装与检查环境：
+自己的课程：在“我的 → 课表设置”填写学校实际开始日和周数，再通过“导入课表文件”导入 JSON 并确认预览。默认提前 15 分钟提醒，可选 5、10、15、30、60 分钟或关闭。首次启用需要允许通知；没有精确闹钟权限时会显示可能延迟。
 
-```powershell
-./scripts/setup-android.ps1 -WithEmulator
-```
+日历同步需授权并选择可写日历。关闭可保留或删除本 APP 创建的日程。删除时检查课程实例与本 APP 专属标记，不操作其他日程；清理失败保留映射并可重试。日历事件不创建第二份系统提醒。
 
-安装时需要访问官方下载源和软件包服务，并接受 Android SDK 开发工具许可。安装日志与许可文本保留在 `.tools/`。安装脚本只在项目内放置工具；Flutter 自身会保存 SDK 路径配置。
+## JSON 文件
 
-每次打开新的 PowerShell 终端后激活环境：
+样例：[schedule.schema-v1.json](examples/schedule.schema-v1.json)。
+
+| 字段 | 含义 |
+|---|---|
+| schemaVersion | 固定为 1 |
+| isDemo | 样例为 true；导入本人课程改成 false |
+| explicitlyEmpty | 只有明确要清空且 courses=[] 时设 true，并在预览再次确认 |
+| id | 每条课程安排唯一的非空标识 |
+| name / teacher / room | 课程名、教师、教室，均非空 |
+| weekday | 周一至周日：1–7 |
+| startPeriod / endPeriod | 开始/结束节次：1–11，包含边界 |
+| weeks | 实际上课周次数组：1–30；单双周展开成明确周次 |
+
+同一课程不同星期或不同节次，应使用不同 id。文件上限 2 MB。导入文件不能冒充学校来源；示例模式不覆盖真实课表。
+
+## 开发与构建
+
+源码位于 `mobile/`。本次工具在 `C:/Users/david/Desktop/app/.tools`，不会进入 Git。Windows PowerShell：
 
 ```powershell
+$env:HEPAN_TOOLCHAIN_ROOT='C:/Users/david/Desktop/app/.tools'
 . ./scripts/android-env.ps1
-flutter doctor -v
-flutter devices
+Set-Location mobile
+flutter pub get
+flutter analyze
+flutter test
+flutter run -d emulator-5554
 ```
 
-真机调试：在 Android 手机打开开发者选项和 USB 调试，通过 USB 连接电脑，在手机上允许电脑调试，然后检查 `flutter devices`。如果 Windows 无法识别手机，根据手机厂商说明安装官方 USB 驱动。不要在聊天中提供学校账号密码。
-
-模拟器需 Windows 支持的硬件虚拟化环境；环境检查与设备启动结果记录在 `docs/android-setup-status.md`。安装完成后可使用：
+回到仓库根目录构建：
 
 ```powershell
-. ./scripts/android-env.ps1
-./scripts/create-android-emulator.ps1
-emulator -avd hepan_everyday
+./scripts/build-android.ps1
 ```
 
-已创建的虚拟设备会重复使用，不覆盖其数据。
+构建成功才复制新 APK 到 `dist/`。工具版本与设备环境见 [Android 环境](docs/android-setup-status.md)。其他电脑可使用 `scripts/setup-android.ps1 -WithEmulator` 安装环境，并将构建脚本 ToolchainRoot 指向对应 `.tools` 目录。
 
-## 首版设计
-
-见 [已确认的首版设计](docs/superpowers/specs/2026-10-12-hepan-everyday-design.md)与[实现计划](docs/superpowers/plans/2026-10-12-hepan-everyday-android.md)。学校真实课表解析需要在用户本人认证后的页面上验证。
+设备集成检查见 [验证记录](docs/android-mvp-validation.md)。系统日历测试仅运行于专用模拟器的 `Hepan_Integration_Test` 测试日历，需提前允许测试 APP 读取和写入日历。`mobile/tool/reminder_probe.dart` 是短时系统提醒测试入口，交付 APK 始终使用 `lib/main.dart`。

docs/android-mvp-validation.md

@@ -0,0 +1,32 @@
+# Android 首版验证记录
+
+日期：2026-10-13。测试环境：Flutter 3.47.7 / Dart 3.13.5 / JDK 17；Android 16 API 36，Pixel 7 模拟器，1080×2400。首版版本 0.1.0+1，包 ID com.example.hepan_everyday，最低 Android 7.0（API 24）。
+
+## 已验证
+
+- `flutter analyze`：No issues found。
+- `flutter test`：51 项通过，包括 11 节时间、上海时区和非周一开始日、不连续周次、导入拒绝保留原课表、存储损坏恢复、示例隔离、通知去重和权限降级、日历中断恢复与归属检查、200% 字体和重叠课程、通知点击详情。
+- `integration_test/app_flow_test.dart` 在 Android 模拟器通过：两页导航、单色设置、实际日期选择器和学期周数保存、导入预览取消与确认、示例不改真实保存文件、错误导入保持数据、重开恢复。
+- `integration_test/calendar_bridge_test.dart` 在专用 Hepan_Integration_Test 日历通过：创建、再次同步更新同一 ID、映射丢失后找回、错误 key 无法删除、删除自有事件。设备实际查询表明 Unrelated_fixture 事件保留，CalendarContract.Reminders 无记录。
+- 首次真实 APK 构建、安装、启动成功。初次编译下载依赖用时约 695 秒，后续构建约 40 秒。
+- 短时通知使用独立测试入口 tool/reminder_probe.dart，不写入用户课表文件。应用退到后台后系统收到通知，实际标题及内容包含测试课程、教师和教室；点击通知打开对应课程详情。
+
+## 补充设备结果
+
+- 模拟器重启后：未重新打开 APP，系统仍送出已安排的测试通知；启动正式 APP 后，空课表协调取消残留自有通知。
+- 已重建并安装 lib/main.dart 正式入口 APK，核实包名、0.1.0+1、API 24/36 和三种 Android 架构。示例课表、我的、周日、末节、设置和 200% 字体已有设备截图；验证 APK 不包含测试入口。
+- 独立代码审查进行中，结论另记。
+
+## 仍需本人手机验证
+
+- 本人学校登录、验证码、二次验证、真实研究生课表解析。目前解析器明确提示待联调，保护已有课表；见 school-integration-status.md。
+- 真实手机的厂商省电、锁屏通知、长时间后台与真机重启行为；模拟器结果不能代替真机。
+- 不同手机日历应用与云账户对自定义归属标记的同步行为。
+- iOS 尚未配置及验证。
+
+## 本轮修复和设备异常
+
+日历设备测试复现 Calendar Provider 不允许“事件单条 URI + selection”操作；改为集合 URI 加事件 ID、应用包和实例标记条件，原设备测试随后通过。首次设备界面测试时模拟器连接中断；重新启动并使用软件图形模式后同项测试通过。首次权限检查未通过来自测试框架重装应用；本轮单独授权后完成系统日历测试。
+
+通知初始化暂时失败后可重试，日历服务异常在设置中解释并保持未启用。首次同步中断、尚无保存 ID 时，通过选定日历的专属标记恢复清理；清理失败持久保存待重试状态。
+

docs/school-integration-status.md

@@ -0,0 +1,11 @@
+# 学校接入状态
+
+当前首版提供自绘账号密码入口，以及学校官方页面进行验证码、二次验证和登录。认证使用系统 WebView 与学校原有提交及加密逻辑；密码不保存到本地文件，不发送到第三方服务器。退出会清除该 WebView 的 Cookie、缓存和本地存储，可选择保留或清除已导入课表。
+
+已检查公开的 [统一身份认证页面](https://idas.uestc.edu.cn/authserver/login) 及脚本，核实表单结构和学校原有函数。登录前再次检查 HTTPS、域名、端口、路径和表单结构；页面变化时停止自动提交，仍可使用官方页面完成操作。
+
+**尚未完成本人登录及真实课表自动识别。** [研究生课表查询页](https://yjsjy.uestc.edu.cn/pyxx/pygl/xskbcx/index/1) 需要本人会话，当前没有取得页面样本。解析器遇到当前未知页面明确提示“学校课表识别待联调，当前课表保持不变”，不会生成虚假课程或清空原课表。
+
+后续在本人手机登录后，需要用脱敏课表页面核实：课程字段、单/双周、周次范围、连续节次、校区、空课表和会话失效。页面中学生姓名、学号、Cookie、令牌及密码应移除后才作为开发样本。取得样本后增加解析器与回归测试，再开放真实自动导入。
+
+首版可体验内置示例，或通过 JSON 导入本人课程。JSON 导入先预览再确认，失败保留原数据；示例模式独立，不写手机日历或安排系统通知。

examples/schedule.schema-v1.json

@@ -0,0 +1,10 @@
+{
+  "schemaVersion": 1,
+  "isDemo": true,
+  "explicitlyEmpty": false,
+  "courses": [
+    {"id":"example-matrix","name":"矩阵论（示例）","teacher":"示例教师","room":"示例教室 A101","weekday":1,"startPeriod":1,"endPeriod":2,"weeks":[1,2,3,4,5,6,7,8]},
+    {"id":"example-english","name":"研究生英语（示例）","teacher":"示例教师","room":"示例教室 B202","weekday":3,"startPeriod":5,"endPeriod":6,"weeks":[1,3,5,7]},
+    {"id":"example-seminar","name":"学术研讨（示例）","teacher":"示例导师","room":"示例教室 C303","weekday":7,"startPeriod":9,"endPeriod":11,"weeks":[2,4,6,8]}
+  ]
+}

mobile/android/app/src/main/AndroidManifest.xml

@@ -8,7 +8,7 @@
     <application
         android:label="河畔Everyday"
         android:name="${applicationName}"
-        android:icon="@mipmap/ic_launcher">
+        android:icon="@drawable/ic_hepan_launcher">
         <receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver" android:exported="false" />
         <receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver" android:exported="false">
             <intent-filter>

mobile/android/app/src/main/kotlin/com/example/hepan_everyday/CalendarBridge.kt

@@ -111,9 +111,9 @@ class CalendarBridge(private val activity: Activity, messenger: BinaryMessenger)
         }
         val id = args["eventId"] as? String
         if (id != null && ownership(id, key, calendarId)) {
-            val count = resolver.update(ContentUris.withAppendedId(Events.CONTENT_URI,id.toLong()), values,
-                "${Events.CUSTOM_APP_PACKAGE}=? AND ${Events.CUSTOM_APP_URI}=? AND ${Events.CALENDAR_ID}=?",
-                arrayOf(owner, marker(key), calendarId))
+            val count = resolver.update(Events.CONTENT_URI, values,
+                "${Events._ID}=? AND ${Events.CUSTOM_APP_PACKAGE}=? AND ${Events.CUSTOM_APP_URI}=? AND ${Events.CALENDAR_ID}=? AND ${Events.DELETED}=0",
+                arrayOf(id, owner, marker(key), calendarId))
             check(count==1) { "日程已被修改" }
             return id
         }
@@ -121,7 +121,7 @@ class CalendarBridge(private val activity: Activity, messenger: BinaryMessenger)
     }
     private fun delete(id: String, key: String) {
         if (!ownership(id,key)) return
-        resolver.delete(ContentUris.withAppendedId(Events.CONTENT_URI,id.toLong()),
-            "${Events.CUSTOM_APP_PACKAGE}=? AND ${Events.CUSTOM_APP_URI}=?", arrayOf(owner,marker(key)))
+        resolver.delete(Events.CONTENT_URI,
+            "${Events._ID}=? AND ${Events.CUSTOM_APP_PACKAGE}=? AND ${Events.CUSTOM_APP_URI}=?", arrayOf(id,owner,marker(key)))
     }
 }

mobile/android/app/src/main/res/drawable/ic_hepan_launcher.xml

@@ -0,0 +1,7 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="108dp" android:height="108dp" android:viewportWidth="108" android:viewportHeight="108">
+    <path android:fillColor="#348F91" android:pathData="M0,0h108v108h-108z" />
+    <path android:fillColor="#FFFFFF" android:pathData="M28,29h52v43h-52z" />
+    <path android:fillColor="#348F91" android:pathData="M32,41h44v27h-44z" />
+    <path android:strokeColor="#FFFFFF" android:strokeWidth="4" android:strokeLineCap="round" android:pathData="M40,25v12M68,25v12M36,79c12,-9 24,9 36,0" />
+    <path android:fillColor="#FFFFFF" android:pathData="M40,49h8v8h-8zM60,49h8v8h-8z" />
+</vector>

mobile/integration_test/app_flow_test.dart

@@ -0,0 +1,128 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:timezone/data/latest.dart' as tzdata;
+import 'package:hepan_everyday/app/app_controller.dart';
+import 'package:hepan_everyday/main.dart';
+import 'package:hepan_everyday/data/file_snapshot_store.dart';
+import 'package:hepan_everyday/data/json_schedule_import.dart';
+import 'package:hepan_everyday/domain/app_settings.dart';
+import 'package:hepan_everyday/domain/course.dart';
+import 'package:hepan_everyday/features/profile/import_preview.dart';
+
+import '../test/support/fakes.dart';
+import '../test/domain/schedule_engine_test.dart' show course;
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+  setUpAll(tzdata.initializeTimeZones);
+  testWidgets(
+    'offline import, preview cancellation, color settings and reopening preserve saved courses',
+    (tester) async {
+      final directory = await Directory.systemTemp.createTemp(
+        'hepan-device-test-',
+      );
+      final store = FileSnapshotStore(directory);
+      final controller = AppController(
+        store,
+        FakeNotifications(),
+        FakeCalendar(),
+        () => DateTime.utc(2026, 9, 9),
+      );
+      await controller.initialize();
+      await tester.pumpWidget(buildApplication(controller));
+      await tester.pumpAndSettle();
+      expect(find.bySemanticsLabel('课表'), findsOneWidget);
+      await tester.tap(find.bySemanticsLabel('我的'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('课表设置'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('单色'));
+      await tester.pumpAndSettle();
+      expect(controller.snapshot.settings.colorMode, ColorMode.single);
+      // Native file chooser itself is verified manually; preview uses the same UI as file import.
+      await tester.scrollUntilVisible(find.byKey(const Key('semester-weeks')),300,
+        scrollable:find.byType(Scrollable).last);
+      await tester.ensureVisible(find.text('学期开始日'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('学期开始日'));await tester.pumpAndSettle();
+      await tester.tap(find.text('确定'));await tester.pumpAndSettle();
+      await tester.enterText(find.byKey(const Key('semester-weeks')),'5');
+      await tester.ensureVisible(find.text('保存学期设置'));
+      await tester.tap(find.text('保存学期设置'));await tester.pumpAndSettle();
+      expect(controller.snapshot.settings.semester!.totalWeeks,5);
+      expect(controller.snapshot.settings.semester!.startDate,DateTime.utc(2026,9,9));
+      final draft = ImportDraft(
+        courses: [course(last: 2)],
+        explicitlyEmpty: false,
+        source: CourseSource.file,
+        parserVersion: 'device-json-v1',
+      );
+      await tester.pumpWidget(
+        MaterialApp(
+          home: Builder(
+            builder: (context) => Scaffold(
+              body: TextButton(
+                onPressed: () => showModalBottomSheet<void>(
+                  context: context,
+                  isScrollControlled: true,
+                  builder: (_) =>
+                      ImportPreview(draft: draft, controller: controller),
+                ),
+                child: const Text('预览文件'),
+              ),
+            ),
+          ),
+        ),
+      );
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('预览文件'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('取消'));
+      await tester.pumpAndSettle();
+      expect(controller.snapshot.courses, isEmpty);
+      await tester.tap(find.text('预览文件'));
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('确认导入'));
+      await tester.pumpAndSettle();
+      expect(controller.snapshot.courses.single.id, 'math');
+      await tester.pumpWidget(buildApplication(controller));
+      await tester.pumpAndSettle();
+      expect(find.text('矩阵论'), findsOneWidget);
+      final before = await File('${directory.path}/hepan_snapshot.json')
+          .readAsString();
+      await controller.showDemo();
+      await tester.pumpAndSettle();
+      expect(find.text('示例课表'), findsOneWidget);
+      expect(
+        await File('${directory.path}/hepan_snapshot.json').readAsString(),
+        before,
+      );
+      await controller.applyImport(
+        const ImportDraft(
+          courses: [],
+          explicitlyEmpty: false,
+          source: CourseSource.file,
+          parserVersion: 'bad',
+        ),
+        confirmedEmpty: false,
+      );
+      expect(controller.snapshot.courses.single.id, 'math');
+      final reopened = AppController(
+        store,
+        FakeNotifications(),
+        FakeCalendar(),
+        controller.clock,
+      );
+      await reopened.initialize();
+      expect(reopened.snapshot.courses.single.id, 'math');
+      expect(reopened.snapshot.settings.colorMode, ColorMode.single);
+      await tester.pumpWidget(const SizedBox());
+      controller.dispose();
+      reopened.dispose();
+      await directory.delete(recursive: true);
+    },
+  );
+}

mobile/integration_test/calendar_bridge_test.dart

@@ -0,0 +1,43 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:timezone/data/latest.dart' as tzdata;
+import 'package:hepan_everyday/services/android_calendar_service.dart';
+import 'package:hepan_everyday/domain/schedule_engine.dart';
+
+import '../test/domain/schedule_engine_test.dart' show course;
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+  testWidgets(
+    'native dedicated calendar creates updates deduplicates and deletes owned events',
+    (tester) async {
+      tzdata.initializeTimeZones();
+      await tester.pumpWidget(const MaterialApp(home: Scaffold()));
+      final gateway = MethodCalendarGateway();
+      final service = AndroidCalendarService(gateway);
+      expect(await service.requestAccess(),isTrue);
+      final calendars = await service.listWritableCalendars();
+      final selected = calendars.where(
+        (c) => c.name == 'Hepan_Integration_Test',
+      );
+      if (selected.isEmpty) {
+        fail('请先在专用模拟器建立 Hepan Integration Test 日历');
+      }
+      final id = selected.single.id;
+      final events = ScheduleEngine.occurrences([
+        course(last: 2),
+      ], Semester(startDate: DateTime(2026, 9, 9), totalWeeks: 1));
+      var mapping = await service.sync(events, id, {});
+      expect(mapping, hasLength(1));
+      final original = mapping.values.single;
+      mapping = await service.sync(events, id, {}); // lost mapping recovery
+      expect(mapping.values.single, original);
+      expect(await gateway.ownedEvents(id), hasLength(1));
+      await gateway.delete(original, 'wrong-occurrence');
+      expect(await gateway.ownedEvents(id), hasLength(1));
+      await service.deleteOwned(mapping);
+      expect(await gateway.ownedEvents(id), isEmpty);
+    },
+  );
+}

mobile/lib/app/app_controller.dart

@@ -170,8 +170,9 @@ class AppController extends ChangeNotifier {
     }
     calendarSyncError = null;
   });
-  Future<void> enableCalendarFromUserAction(String calendarId) =>
-      _run(() async {
+  Future<void> enableCalendarFromUserAction(
+    String calendarId,
+  ) => _run(() async {
     if (isDemo) throw StateError('示例课表不会导入日历');
     if (snapshot.settings.semester == null) throw StateError('请先设置学期');
     if (!await calendar.requestAccess()) {
@@ -190,15 +191,17 @@ class AppController extends ChangeNotifier {
       calendarEnabled: true,
       calendarId: calendarId,
     );
+    // Keep the chosen calendar for recovery if the first native sync fails midway.
+    await _save(
+      snapshot.copyWith(settings: settings.copyWith(calendarEnabled: false)),
+    );
     try {
       final ids = await calendar.sync(
         ScheduleEngine.occurrences(snapshot.courses, settings.semester!),
         calendarId,
         snapshot.calendarEventIds,
       );
-          await _save(
-            snapshot.copyWith(settings: settings, calendarEventIds: ids),
-          );
+      await _save(snapshot.copyWith(settings: settings, calendarEventIds: ids));
       calendarSyncError = null;
     } catch (_) {
       calendarSyncError = '日历同步失败，可重试';
@@ -225,6 +228,10 @@ class AppController extends ChangeNotifier {
   Future<void> _cleanupCalendar() async {
     try {
       await calendar.deleteOwned(snapshot.calendarEventIds);
+      final calendarId = snapshot.settings.calendarId;
+      if (calendarId != null) {
+        await calendar.deleteOwned(await calendar.ownedEventIds(calendarId));
+      }
       await _save(
         snapshot.copyWith(calendarEventIds: {}, calendarCleanupPending: false),
       );

mobile/lib/app/hepan_app.dart

@@ -1,4 +1,8 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+
+import '../domain/schedule_engine.dart';
+import '../features/timetable/course_details.dart';
 
 import 'app_controller.dart';
 import 'app_theme.dart';
@@ -13,28 +17,40 @@ class HepanApp extends StatelessWidget {
     required this.controller,
     this.schoolBuilder,
     this.school,
+    this.notificationSelection,
   });
   final AppController controller;
   final Widget Function()? schoolBuilder;
   final SchoolSession? school;
+  final ValueNotifier<String?>? notificationSelection;
   @override
   Widget build(BuildContext context) => MaterialApp(
     debugShowCheckedModeBanner: false,
     title: '河畔Everyday',
     theme: hepanTheme(),
+    locale: const Locale('zh', 'CN'),
+    supportedLocales: const [Locale('zh', 'CN')],
+    localizationsDelegates: GlobalMaterialLocalizations.delegates,
     home: _Shell(
       controller: controller,
       schoolBuilder: schoolBuilder,
       school: school,
+      notificationSelection: notificationSelection,
     ),
   );
 }
 
 class _Shell extends StatefulWidget {
-  const _Shell({required this.controller, this.schoolBuilder, this.school});
+  const _Shell({
+    required this.controller,
+    this.schoolBuilder,
+    this.school,
+    this.notificationSelection,
+  });
   final AppController controller;
   final Widget Function()? schoolBuilder;
   final SchoolSession? school;
+  final ValueNotifier<String?>? notificationSelection;
   @override
   State<_Shell> createState() => _ShellState();
 }
@@ -45,14 +61,45 @@ class _ShellState extends State<_Shell> with WidgetsBindingObserver {
   void initState() {
     super.initState();
     WidgetsBinding.instance.addObserver(this);
+    widget.notificationSelection?.addListener(_selectNotification);
+    WidgetsBinding.instance.addPostFrameCallback((_) => _selectNotification());
   }
 
   @override
   void dispose() {
     WidgetsBinding.instance.removeObserver(this);
+    widget.notificationSelection?.removeListener(_selectNotification);
     super.dispose();
   }
 
+  Future<void> _selectNotification() async {
+    final key = widget.notificationSelection?.value;
+    if (key == null || !mounted) {
+      return;
+    }
+    widget.notificationSelection!.value = null;
+    await widget.controller.leaveDemo();
+    if (!mounted) {
+      return;
+    }
+    Navigator.of(context).popUntil((route) => route.isFirst);
+    setState(() => _tab = 0);
+    final semester = widget.controller.snapshot.settings.semester;
+    if (semester == null) {
+      return;
+    }
+    final events = ScheduleEngine.occurrences(
+      widget.controller.snapshot.courses,
+      semester,
+    ).where((e) => e.key == key);
+    if (events.isNotEmpty) {
+      showCourseDetails(context, events.first);
+    } else {
+      ScaffoldMessenger.of(context)
+          .showSnackBar(const SnackBar(content: Text('这门课程已更新，请查看当前课表')));
+    }
+  }
+
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
     if (state == AppLifecycleState.resumed) {

mobile/lib/features/profile/settings_page.dart

@@ -34,6 +34,16 @@ class _SettingsPageState extends State<SettingsPage> {
   }
 
   Future<void> _calendar(bool enabled) async {
+    try {
+      await _calendarAction(enabled);
+    } catch (_) {
+      if (mounted) {
+        _notice('日历暂时不可用，请检查权限后重试');
+      }
+    }
+  }
+
+  Future<void> _calendarAction(bool enabled) async {
     final c = widget.controller;
     if (enabled) {
       if (!await c.calendar.requestAccess()) {

mobile/lib/main.dart

@@ -1,122 +1,44 @@
 import 'package:flutter/material.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:timezone/data/latest.dart' as tzdata;
 
-void main() {
-  runApp(const MyApp());
-}
+import 'app/app_controller.dart';
+import 'app/hepan_app.dart';
+import 'data/file_snapshot_store.dart';
+import 'services/local_notification_service.dart';
+import 'services/android_calendar_service.dart';
+import 'features/school/school_session.dart';
+import 'features/school/school_auth_page.dart';
 
-class MyApp extends StatelessWidget {
-  const MyApp({super.key});
-
-  // This widget is the root of your application.
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'Flutter Demo',
-      theme: ThemeData(
-        // This is the theme of your application.
-        //
-        // TRY THIS: Try running your application with "flutter run". You'll see
-        // the application has a purple toolbar. Then, without quitting the app,
-        // try changing the seedColor in the colorScheme below to Colors.green
-        // and then invoke "hot reload" (save your changes or press the "hot
-        // reload" button in a Flutter-supported IDE, or press "r" if you used
-        // the command line to start the app).
-        //
-        // Notice that the counter didn't reset back to zero; the application
-        // state is not lost during the reload. To reset the state, use hot
-        // restart instead.
-        //
-        // This works for code too, not just values: Most code changes can be
-        // tested with just a hot reload.
-        colorScheme: .fromSeed(seedColor: Colors.deepPurple),
-      ),
-      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+Widget buildApplication(
+  AppController controller, {
+  ValueNotifier<String?>? notificationSelection,
+  SchoolSession? school,
+}) => HepanApp(
+  controller: controller,
+  notificationSelection: notificationSelection,
+  school: school,
+  schoolBuilder: school == null
+      ? null
+      : () => SchoolAuthPage(session: school, controller: controller),
+);
+Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  tzdata.initializeTimeZones();
+  final selection = ValueNotifier<String?>(null);
+  final gateway = PluginReminderGateway(onTap: (key) => selection.value = key);
+  final controller = AppController(
+    FileSnapshotStore(await getApplicationSupportDirectory()),
+    LocalNotificationService(gateway),
+    AndroidCalendarService(MethodCalendarGateway()),
+    DateTime.now,
   );
-  }
-}
-
-class MyHomePage extends StatefulWidget {
-  const MyHomePage({super.key, required this.title});
-
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
-  final String title;
-
-  @override
-  State<MyHomePage> createState() => _MyHomePageState();
-}
-
-class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
-
-  void _incrementCounter() {
-    setState(() {
-      // This call to setState tells the Flutter framework that something has
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
-      _counter++;
-    });
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
-    return Scaffold(
-      appBar: AppBar(
-        // TRY THIS: Try changing the color here to a specific color (to
-        // Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
-        // change color while the other colors stay the same.
-        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
-        title: Text(widget.title),
-      ),
-      body: Center(
-        // Center is a layout widget. It takes a single child and positions it
-        // in the middle of the parent.
-        child: Column(
-          // Column is also a layout widget. It takes a list of children and
-          // arranges them vertically. By default, it sizes itself to fit its
-          // children horizontally, and tries to be as tall as its parent.
-          //
-          // Column has various properties to control how it sizes itself and
-          // how it positions its children. Here we use mainAxisAlignment to
-          // center the children vertically; the main axis here is the vertical
-          // axis because Columns are vertical (the cross axis would be
-          // horizontal).
-          //
-          // TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
-          // action in the IDE, or press "p" in the console), to see the
-          // wireframe for each widget.
-          mainAxisAlignment: .center,
-          children: [
-            const Text('You have pushed the button this many times:'),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headlineMedium,
-            ),
-          ],
-        ),
-      ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
+  await controller.initialize();
+  runApp(
+    buildApplication(
+      controller,
+      notificationSelection: selection,
+      school: SchoolSession(),
     ),
   );
-  }
 }

mobile/lib/services/android_calendar_service.dart

@@ -51,6 +51,11 @@ class AndroidCalendarService extends CalendarService {
   AndroidCalendarService(this.gateway);
   final CalendarGateway gateway;
   @override
+  Future<Map<String, String>> ownedEventIds(String calendarId) async => {
+    for (final event in await gateway.ownedEvents(calendarId))
+      if (event.owned && event.calendarId == calendarId) event.key: event.id,
+  };
+  @override
   Future<bool> requestAccess() => gateway.requestAccess();
   @override
   Future<List<DeviceCalendar>> listWritableCalendars() => gateway.calendars();

mobile/lib/services/calendar_service.dart

@@ -14,4 +14,6 @@ abstract class CalendarService {
     Map<String, String> knownEventIds,
   );
   Future<void> deleteOwned(Map<String, String> eventIds);
+  Future<Map<String, String>> ownedEventIds(String calendarId) async =>
+      const {};
 }

mobile/lib/services/local_notification_service.dart

@@ -147,18 +147,27 @@ class PluginReminderGateway extends ReminderGateway {
   final void Function(String key)? onTap;
   final _plugin = FlutterLocalNotificationsPlugin();
   Future<void>? _initializing;
-  Future<void> initialize() => _initializing ??= () async {
-    await _plugin.initialize(
+  Future<void> initialize() => _initializing ??= Future<void>(() async {
+    try {
+      final ready = await _plugin.initialize(
         settings: const InitializationSettings(
           android: AndroidInitializationSettings('ic_stat_calendar'),
         ),
-      onDidReceiveNotificationResponse: (response) => _select(response.payload),
+        onDidReceiveNotificationResponse: (response) =>
+            _select(response.payload),
       );
+      if (ready != true) {
+        throw StateError('通知服务初始化失败');
+      }
       final launch = await _plugin.getNotificationAppLaunchDetails();
       if (launch?.didNotificationLaunchApp == true) {
         _select(launch?.notificationResponse?.payload);
       }
-  }();
+    } catch (_) {
+      _initializing = null;
+      rethrow;
+    }
+  });
   void _select(String? payload) {
     if (payload?.startsWith('hepan:') == true) {
       onTap?.call(payload!.substring(6));

mobile/pubspec.lock

@@ -219,6 +219,11 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.1.1"
+  flutter_localizations:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -263,6 +268,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  intl:
+    dependency: transitive
+    description:
+      name: intl
+      sha256: "1ca20c894b1717686a2319b8548763d812bc0aabdac580420a44c5178c57a867"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.20.3"
   jni:
     dependency: transitive
     description:

mobile/pubspec.yaml

@@ -7,6 +7,8 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
+  flutter_localizations:
+    sdk: flutter
   webview_flutter: 4.14.1
   flutter_local_notifications: 22.3.2
   timezone: 0.11.1

mobile/test/app/app_controller_test.dart

@@ -9,6 +9,9 @@ import 'package:hepan_everyday/data/json_schedule_import.dart';
 
 import '../support/fakes.dart';
 import '../domain/schedule_engine_test.dart' show course;
+import '../services/calendar_service_test.dart' show CalendarProvider;
+
+import 'package:hepan_everyday/services/android_calendar_service.dart';
 
 void main() {
   setUpAll(tzdata.initializeTimeZones);
@@ -35,6 +38,29 @@ void main() {
     );
   });
   tearDown(() => controller.dispose());
+  test('turning off after interrupted first sync cleans events even without saved IDs', () async {
+    store.value = store.value!.copyWith(
+      courses: [
+        course(id: 'a'),
+        course(id: 'b'),
+      ],
+    );
+    final provider = CalendarProvider()..failAfterFirst = true;
+    final interrupted = AppController(
+      store,
+      notifications,
+      AndroidCalendarService(provider),
+      controller.clock,
+    );
+    await interrupted.initialize();
+    await interrupted.enableCalendarFromUserAction('local');
+    expect(interrupted.calendarSyncError, isNotNull);
+    expect(provider.records, hasLength(1));
+    provider.failAfterFirst = false;
+    await interrupted.disableCalendar(deleteEvents: true);
+    expect(provider.records, isEmpty);
+    interrupted.dispose();
+  });
   test(
     'failed calendar cleanup is retried after reopening while sync is off',
     () async {

mobile/test/services/notification_gateway_test.dart

@@ -0,0 +1,38 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+import 'package:hepan_everyday/services/local_notification_service.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  test('transient native initialization failure can be retried', () async {
+    debugDefaultTargetPlatformOverride = TargetPlatform.android;
+    AndroidFlutterLocalNotificationsPlugin.registerWith();
+    const channel = MethodChannel('dexterous.com/flutter/local_notifications');
+    var attempts = 0;
+    TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+        .setMockMethodCallHandler(channel, (call) async {
+          if (call.method == 'initialize') {
+            attempts++;
+            if (attempts == 1) {
+              throw PlatformException(code: 'temporarily-unavailable');
+            }
+            return true;
+          }
+          if (call.method == 'getNotificationAppLaunchDetails') {
+            return {'notificationLaunchedApp': false};
+          }
+          return null;
+        });
+    addTearDown(() {
+      debugDefaultTargetPlatformOverride = null;
+      TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+          .setMockMethodCallHandler(channel, null);
+    });
+    final gateway = PluginReminderGateway();
+    await expectLater(gateway.initialize(), throwsA(isA<PlatformException>()));
+    await gateway.initialize();
+    expect(attempts, 2);
+  });
+}

mobile/test/widget_test.dart

@@ -1,30 +0,0 @@
-// This is a basic Flutter widget test.
-//
-// To perform an interaction with a widget in your test, use the WidgetTester
-// utility in the flutter_test package. For example, you can send tap and scroll
-// gestures. You can also use WidgetTester to find child widgets in the widget
-// tree, read text, and verify that the values of widget properties are correct.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-
-import 'package:hepan_everyday/main.dart';
-
-void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
-
-    // Verify that our counter starts at 0.
-    expect(find.text('0'), findsOneWidget);
-    expect(find.text('1'), findsNothing);
-
-    // Tap the '+' icon and trigger a frame.
-    await tester.tap(find.byIcon(Icons.add));
-    await tester.pump();
-
-    // Verify that our counter has incremented.
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
-  });
-}

mobile/test/widgets/settings_test.dart

@@ -2,11 +2,44 @@ import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:timezone/data/latest.dart' as tzdata;
 import 'package:hepan_everyday/app/hepan_app.dart';
+import 'package:hepan_everyday/app/app_controller.dart';
+import 'package:hepan_everyday/features/profile/settings_page.dart';
+import 'package:hepan_everyday/services/calendar_service.dart';
+
+import '../support/fakes.dart';
 
 import 'navigation_test.dart' show uiController;
 
 void main() {
   setUpAll(tzdata.initializeTimeZones);
+  testWidgets('calendar provider failure is explained and keeps switch off', (
+    tester,
+  ) async {
+    final controller = AppController(
+      MemoryStore(),
+      FakeNotifications(),
+      UnavailableCalendar(),
+      DateTime.now,
+    );
+    await controller.initialize();
+    await tester.pumpWidget(
+      MaterialApp(home: SettingsPage(controller: controller)),
+    );
+    await tester.pumpAndSettle();
+    await tester.scrollUntilVisible(
+      find.text('导入手机日历'),
+      250,
+      scrollable: find.byType(Scrollable).first,
+    );
+    await tester.ensureVisible(find.text('导入手机日历'));
+    await tester.pumpAndSettle();
+    await tester.tap(find.text('导入手机日历'));
+    await tester.pumpAndSettle();
+    expect(tester.takeException(), isNull);
+    expect(find.text('日历暂时不可用，请检查权限后重试'), findsOneWidget);
+    expect(controller.snapshot.settings.calendarEnabled, isFalse);
+    controller.dispose();
+  });
   testWidgets(
     'invalid semester weeks are rejected without changing saved data',
     (tester) async {
@@ -57,3 +90,9 @@ void main() {
     controller.dispose();
   });
 }
+
+class UnavailableCalendar extends FakeCalendar {
+  @override
+  Future<List<DeviceCalendar>> listWritableCalendars() async =>
+      throw StateError('unavailable');
+}

mobile/test/widgets/startup_test.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:timezone/data/latest.dart' as tzdata;
+import 'package:hepan_everyday/main.dart';
+import 'package:hepan_everyday/app/app_controller.dart';
+import 'package:hepan_everyday/app/hepan_app.dart';
+import 'package:hepan_everyday/domain/app_snapshot.dart';
+import 'package:hepan_everyday/domain/app_settings.dart';
+import 'package:hepan_everyday/domain/semester.dart';
+
+import '../support/fakes.dart';
+import '../domain/schedule_engine_test.dart' show course;
+
+void main() {
+  setUpAll(tzdata.initializeTimeZones);
+  testWidgets(
+    'actual startup connects both tabs and reminder tap opens saved course',
+    (tester) async {
+      final selection = ValueNotifier<String?>(null);
+      final controller = AppController(
+        MemoryStore(
+          AppSnapshot(
+            courses: [course(last: 2)],
+            settings: AppSettings(
+              semester: Semester(
+                startDate: DateTime(2026, 9, 9),
+                totalWeeks: 5,
+              ),
+            ),
+          ),
+        ),
+        FakeNotifications(),
+        FakeCalendar(),
+        () => DateTime.utc(2026, 9, 8),
+      );
+      await controller.initialize();
+      await tester.pumpWidget(
+        buildApplication(controller, notificationSelection: selection),
+      );
+      await tester.pumpAndSettle();
+      expect(find.bySemanticsLabel('课表'), findsOneWidget);
+      expect(find.bySemanticsLabel('我的'), findsOneWidget);
+      await tester.tap(find.bySemanticsLabel('我的'));
+      await tester.pumpAndSettle();
+      selection.value = 'math/2026-09-09';
+      await tester.pumpAndSettle();
+      expect(find.text('知道了'), findsOneWidget);
+      expect(find.textContaining('08:30–10:05'), findsOneWidget);
+      await tester.tap(find.text('知道了'));
+      await tester.pumpAndSettle();
+      expect(find.byType(HepanApp), findsOneWidget);
+      controller.dispose();
+      selection.dispose();
+    },
+  );
+}

mobile/tool/reminder_probe.dart

@@ -0,0 +1,62 @@
+// Device-only fixture entry point. Never used by the distributable APK.
+import 'package:flutter/material.dart';
+import 'package:timezone/data/latest.dart' as tzdata;
+import 'package:timezone/timezone.dart' as tz;
+import 'package:hepan_everyday/main.dart' show buildApplication;
+import 'package:hepan_everyday/app/app_controller.dart';
+import 'package:hepan_everyday/domain/app_snapshot.dart';
+import 'package:hepan_everyday/domain/app_settings.dart';
+import 'package:hepan_everyday/domain/schedule_engine.dart';
+import 'package:hepan_everyday/services/local_notification_service.dart';
+
+import '../test/support/fakes.dart';
+
+Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  tzdata.initializeTimeZones();
+  final now = tz.TZDateTime.now(tz.getLocation('Asia/Shanghai'));
+  final date = DateTime.utc(now.year, now.month, now.day);
+  final course = Course(
+    id: 'native-probe',
+    name: '系统提醒验证（测试）',
+    teacher: '测试教师',
+    room: '测试教室',
+    weekday: now.weekday,
+    startPeriod: 1,
+    endPeriod: 2,
+    weeks: {1},
+    source: CourseSource.file,
+  );
+  final settings = AppSettings(
+    semester: Semester(startDate: date, totalWeeks: 1),
+  );
+  final selection = ValueNotifier<String?>(null);
+  final gateway = PluginReminderGateway(onTap: (key) => selection.value = key);
+  final service = LocalNotificationService(gateway);
+  const fireDelay = int.fromEnvironment(
+    'PROBE_DELAY_SECONDS',
+    defaultValue: 30,
+  );
+  final start = now.add(Duration(minutes: 15, seconds: fireDelay));
+  await service.reconcile(
+    [
+      CourseOccurrence(
+        key: 'native-probe/${date.toIso8601String().substring(0, 10)}',
+        course: course,
+        week: 1,
+        start: start,
+        end: start.add(const Duration(minutes: 95)),
+      ),
+    ],
+    settings,
+    now,
+  );
+  final controller = AppController(
+    MemoryStore(AppSnapshot(courses: [course], settings: settings)),
+    FakeNotifications(),
+    FakeCalendar(),
+    DateTime.now,
+  );
+  await controller.initialize();
+  runApp(buildApplication(controller, notificationSelection: selection));
+}

scripts/build-android.ps1

@@ -0,0 +1,15 @@
+param([string]$ToolchainRoot = 'C:/Users/david/Desktop/app/.tools')
+$ErrorActionPreference = 'Stop'
+$env:HEPAN_TOOLCHAIN_ROOT=$ToolchainRoot
+. "$PSScriptRoot/android-env.ps1"
+$projectRoot=Split-Path $PSScriptRoot -Parent
+Push-Location "$projectRoot/mobile"
+try {
+    flutter.bat build apk --debug
+    if($LASTEXITCODE -ne 0) { throw 'Android 构建失败，未复制 APK' }
+    $built=Join-Path (Get-Location) 'build/app/outputs/flutter-apk/app-debug.apk'
+    if(!(Test-Path -LiteralPath $built)) { throw '本次构建未生成 APK' }
+    New-Item -ItemType Directory -Force "$projectRoot/dist" | Out-Null
+    Copy-Item -LiteralPath $built -Destination "$projectRoot/dist/hepan-everyday-debug.apk" -Force
+    Get-Item -LiteralPath "$projectRoot/dist/hepan-everyday-debug.apk" | Select-Object FullName,Length,LastWriteTime
+} finally { Pop-Location }