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/features/settings/presentation/favorites_view_model.dart

@@ -0,0 +1,101 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import 'package:im_app/features/settings/di/settings_providers.dart';
+
+/// 收藏列表 ViewModel 状态（Gitea issue #44）
+class FavoritesState {
+  final bool isLoading;
+  final bool isLoadingMore;
+  final bool hasMore;
+  final int page;
+  final String? error;
+
+  const FavoritesState({
+    this.isLoading = false,
+    this.isLoadingMore = false,
+    this.hasMore = true,
+    this.page = 1,
+    this.error,
+  });
+
+  FavoritesState copyWith({
+    bool? isLoading,
+    bool? isLoadingMore,
+    bool? hasMore,
+    int? page,
+    String? error,
+    bool clearError = false,
+  }) {
+    return FavoritesState(
+      isLoading: isLoading ?? this.isLoading,
+      isLoadingMore: isLoadingMore ?? this.isLoadingMore,
+      hasMore: hasMore ?? this.hasMore,
+      page: page ?? this.page,
+      error: clearError ? null : error ?? this.error,
+    );
+  }
+}
+
+/// 收藏列表 ViewModel
+///
+/// - 初始化时自动拉取第 1 页
+/// - [refresh]：下拉刷新（reset page=1，清空 DB 中旧数据由 repository.watchAll 自动反映）
+/// - [loadMore]：加载更多（page+1）
+/// - [deleteItem]：删除单条收藏
+///
+/// UI 直接 `ref.watch(allFavoritesProvider)` 监听 DB Stream 获取列表，
+/// ViewModel state 只负责 isLoading / error / pagination。
+class FavoritesViewModel extends Notifier<FavoritesState> {
+  @override
+  FavoritesState build() {
+    // 初始化时自动拉取
+    Future.microtask(() => _fetchPage(1, isRefresh: true));
+    return const FavoritesState(isLoading: true);
+  }
+
+  Future<void> _fetchPage(int page, {bool isRefresh = false}) async {
+    if (isRefresh) {
+      state = state.copyWith(isLoading: true, clearError: true, page: 1);
+    } else {
+      state = state.copyWith(isLoadingMore: true, clearError: true);
+    }
+
+    try {
+      final count = await ref
+          .read(fetchFavoritesUseCaseProvider)
+          .execute(page: page);
+      state = state.copyWith(
+        isLoading: false,
+        isLoadingMore: false,
+        hasMore: count > 0,
+        page: page,
+      );
+    } catch (e) {
+      state = state.copyWith(
+        isLoading: false,
+        isLoadingMore: false,
+        error: e.toString(),
+      );
+    }
+  }
+
+  /// 下拉刷新
+  Future<void> refresh() => _fetchPage(1, isRefresh: true);
+
+  /// 加载更多（只有 hasMore && !isLoadingMore 时才触发）
+  Future<void> loadMore() {
+    if (!state.hasMore || state.isLoadingMore) {
+      return Future.value();
+    }
+    return _fetchPage(state.page + 1);
+  }
+
+  /// 删除单条收藏
+  Future<void> deleteItem(int id) async {
+    try {
+      await ref.read(deleteFavoriteUseCaseProvider).execute(id);
+    } catch (e) {
+      state = state.copyWith(error: '删除失败：$e');
+    }
+  }
+}

apps/im_app/lib/features/settings/presentation/recent_calls_view_model.dart

@@ -0,0 +1,100 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:go_router/go_router.dart';
+
+import 'package:im_app/app/router/app_route_name.dart';
+import 'package:im_app/features/settings/di/settings_providers.dart';
+
+/// 最近呼叫页状态
+class RecentCallsState {
+  final int tabIndex;
+  final bool isLoading;
+  final String? error;
+
+  const RecentCallsState({
+    this.tabIndex = 0,
+    this.isLoading = false,
+    this.error,
+  });
+
+  RecentCallsState copyWith({
+    int? tabIndex,
+    bool? isLoading,
+    String? error,
+    bool clearError = false,
+  }) {
+    return RecentCallsState(
+      tabIndex: tabIndex ?? this.tabIndex,
+      isLoading: isLoading ?? this.isLoading,
+      error: clearError ? null : (error ?? this.error),
+    );
+  }
+}
+
+/// 最近呼叫页 ViewModel
+///
+/// ## 数据流
+/// ```
+/// RecentCallsPage (build)
+///   └─ ref.watch(recentCallsViewModelProvider)   读取 loading / error
+///   └─ ref.watch(allCallLogsProvider)             DB Stream 实时通话记录
+///     → RecentCallsViewModel.loadCallLogs()
+///          → FetchCallLogsUseCase.execute()       POST /app/api/call/records
+///          → CallLogRepository.insertOrReplace*   → Drift DB → Stream 刷新
+/// ```
+class RecentCallsViewModel extends Notifier<RecentCallsState> {
+  @override
+  RecentCallsState build() {
+    Future.microtask(_init);
+    return const RecentCallsState();
+  }
+
+  Future<void> _init() async {
+    await Future.wait([loadCallLogs(), markAllRead()]);
+  }
+
+  // ── Tab ────────────────────────────────────────────────────────────────────
+
+  void setTab(int index) {
+    state = state.copyWith(tabIndex: index);
+  }
+
+  // ── 数据拉取 ───────────────────────────────────────────────────────────────
+
+  Future<void> loadCallLogs() async {
+    state = state.copyWith(isLoading: true, clearError: true);
+    try {
+      await ref.read(fetchCallLogsUseCaseProvider).execute();
+      state = state.copyWith(isLoading: false);
+    } catch (e) {
+      debugPrint('[RecentCallsViewModel] loadCallLogs error: $e');
+      state = state.copyWith(isLoading: false, error: e.toString());
+    }
+  }
+
+  // ── 标记已读 ───────────────────────────────────────────────────────────────
+
+  Future<void> markAllRead() async {
+    try {
+      await ref.read(callLogRepositoryProvider).markAllAsRead();
+    } catch (e) {
+      debugPrint('[RecentCallsViewModel] markAllRead error: $e');
+    }
+  }
+
+  // ── 导航 ──────────────────────────────────────────────────────────────────
+
+  void navigateBack(BuildContext context) {
+    if (context.canPop()) context.pop();
+  }
+
+  static void pushFrom(BuildContext context) {
+    context.push(AppRouteName.settingsRecentCalls.path);
+  }
+}
+
+/// 最近呼叫页 ViewModel Provider
+final recentCallsViewModelProvider =
+    NotifierProvider<RecentCallsViewModel, RecentCallsState>(
+  RecentCallsViewModel.new,
+);

apps/im_app/lib/features/settings/presentation/settings_view_model.dart

@@ -141,6 +141,10 @@ class SettingsViewModel extends Notifier<SettingsState> {
   void navigateToAbout(BuildContext context) {
     context.push(AppRouteName.settingsAbout.path);
   }
+
+  void navigateToRecentCalls(BuildContext context) {
+    context.push(AppRouteName.settingsRecentCalls.path);
+  }
 }
 
 /// 我的页面 ViewModel Provider