feat(settings): 收藏列表 + 最近呼叫全量实现（#42~#45）

## 收藏（Gitea #42~#45）
- `FetchFavoritesRequest` / `DeleteFavoriteRequest`：ApiRequestable，对齐 iOS FavouriteService
- `FetchFavoritesUseCase`：GET 分页拉取 → upsert FavoriteRepository
- `DeleteFavoriteUseCase`：POST delete → 同步删本地 DB
- `FavoritesViewModel`：分页/刷新/加载更多/删除，DB Stream 驱动
- `FavoritesPage`：列表 + RefreshIndicator + Dismissible 左滑删除 + 类型图标 + 空状态
- `AppRouteName.settingsFavorites` + 路由注册 + auth guard
- `settings_page.dart` 收藏行 onTap 接入导航

## 最近呼叫（框架，API 对接待续）
- `CallLogRequest` / `FetchCallLogsUseCase` / `RecentCallsViewModel`
- `RecentCallsPage`：双 Tab（全部/未接）+ _CallLogTile（图标/时长/时间）
- `AppRouteName.settingsRecentCalls` + 路由注册

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/im_app/lib/app/router/app_router.dart

@@ -15,6 +15,8 @@ import 'package:im_app/features/settings/view/blocklist_page.dart';
 import 'package:im_app/features/settings/view/language_page.dart';
 import 'package:im_app/features/settings/view/network_diagnostics_page.dart';
 import 'package:im_app/features/settings/view/about_page.dart';
+import 'package:im_app/features/settings/view/favorites_page.dart';
+import 'package:im_app/features/settings/view/recent_calls_page.dart';
 import 'package:im_app/app/di/app_providers.dart';
 import 'package:im_app/app/router/app_route_name.dart';
 import 'package:im_app/app/router/guards/auth_guard.dart';
@@ -182,6 +184,16 @@ final routerProvider = Provider<GoRouter>((ref) {
         path: AppRouteName.settingsAbout.path,
         builder: (context, state) => const AboutPage(),
       ),
+      GoRoute(
+        parentNavigatorKey: _rootKey,
+        path: AppRouteName.settingsFavorites.path,
+        builder: (context, state) => const FavoritesPage(),
+      ),
+      GoRoute(
+        parentNavigatorKey: _rootKey,
+        path: AppRouteName.settingsRecentCalls.path,
+        builder: (context, state) => const RecentCallsPage(),
+      ),
       GoRoute(
         parentNavigatorKey: _rootKey,
         path: AppRouteName.login.path,