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/usecases/delete_favorite_use_case.dart

@@ -0,0 +1,26 @@
+import 'package:networks_sdk/networks_sdk.dart';
+
+import 'package:im_app/data/remote/fetch_favorites_request.dart';
+import 'package:im_app/domain/repositories/favorite_repository.dart';
+
+/// 删除收藏：先调用 API，成功后同步删除本地 DB（Gitea issue #43）
+///
+/// ## 流程
+/// 1. POST /app/api/favorite/delete  body: id={id}
+/// 2. API 成功 → `FavoriteRepository.delete(id)`
+/// 3. DB Stream 自动通知 UI 更新
+class DeleteFavoriteUseCase {
+  final NetworksSdkApi _client;
+  final FavoriteRepository _repository;
+
+  const DeleteFavoriteUseCase({
+    required NetworksSdkApi client,
+    required FavoriteRepository repository,
+  })  : _client = client,
+        _repository = repository;
+
+  Future<void> execute(int id) async {
+    await _client.executeRequest(DeleteFavoriteRequest(id: id));
+    await _repository.delete(id);
+  }
+}

apps/im_app/lib/features/settings/usecases/fetch_call_logs_usecase.dart

@@ -0,0 +1,49 @@
+import 'package:flutter/foundation.dart';
+import 'package:networks_sdk/networks_sdk.dart';
+
+import 'package:im_app/data/remote/call_log_request.dart';
+import 'package:im_app/domain/repositories/call_log_repository.dart';
+
+/// 拉取通话记录用例
+///
+/// ## 执行流程
+/// 1. POST /app/api/call/records（全量：startFrom=0, status=-1）
+/// 2. 解析响应 → CallLogDto → CallLog Domain 实体
+/// 3. insertOrReplaceCallLogs → Drift DB
+/// 4. allCallLogsProvider Stream 自动刷新 → UI 重建
+///
+/// ## 为什么全量拉取
+///
+/// 当前使用 startFrom=0 全量拉取，与 im-client-im-dev CallLogMgr 初始化行为一致。
+/// 后续可优化为增量：取本地最新 updatedAt 作为 startFrom，减少流量。
+class FetchCallLogsUseCase {
+  final NetworksSdkApi _client;
+  final CallLogRepository _repo;
+
+  const FetchCallLogsUseCase({
+    required NetworksSdkApi client,
+    required CallLogRepository repo,
+  })  : _client = client,
+        _repo = repo;
+
+  /// 拉取通话记录并写入本地 DB
+  ///
+  /// 成功返回拉取到的记录数，失败抛出异常。
+  Future<int> execute() async {
+    final response = await _client.executeRequest(
+      const FetchCallLogsRequest(startFrom: 0, status: -1),
+    );
+
+    if (response == null || response.records.isEmpty) {
+      debugPrint('[FetchCallLogsUseCase] no records returned');
+      return 0;
+    }
+
+    final entities = response.records.map((dto) => dto.toEntity()).toList();
+    await _repo.insertOrReplaceCallLogs(entities);
+    debugPrint(
+      '[FetchCallLogsUseCase] inserted ${entities.length} call logs',
+    );
+    return entities.length;
+  }
+}

apps/im_app/lib/features/settings/usecases/fetch_favorites_use_case.dart

@@ -0,0 +1,31 @@
+import 'package:networks_sdk/networks_sdk.dart';
+
+import 'package:im_app/data/remote/fetch_favorites_request.dart';
+import 'package:im_app/domain/repositories/favorite_repository.dart';
+
+/// 分页拉取收藏列表并持久化到 DB（Gitea issue #42）
+///
+/// ## 流程
+/// 1. GET /app/api/favorite/favorites?page={n}
+/// 2. 解码为 [Favorite] 列表
+/// 3. upsert 到 [FavoriteRepository]（insertOrReplaceAll）
+///
+/// 返回本次拉取到的条目数；返回 0 表示无更多数据。
+class FetchFavoritesUseCase {
+  final NetworksSdkApi _client;
+  final FavoriteRepository _repository;
+
+  const FetchFavoritesUseCase({
+    required NetworksSdkApi client,
+    required FavoriteRepository repository,
+  })  : _client = client,
+        _repository = repository;
+
+  Future<int> execute({int page = 1}) async {
+    final resp =
+        await _client.executeRequest(FetchFavoritesRequest(page: page));
+    if (resp == null || resp.items.isEmpty) return 0;
+    await _repository.insertOrReplaceAll(resp.items);
+    return resp.items.length;
+  }
+}