feat(mobile): UI-01 upload center, capture and auxiliary pages

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

apps/mobile/lib/features/uploads/task_store.dart

@@ -407,12 +407,27 @@ class TaskStore {
     return query.get();
   }
 
-  /// 账号内各状态任务数（队列 UI 徽章；全部状态都会出现，无任务计 0）。
-  Future<Map<UploadTaskState, int>> countsByState(String accountId) async {
-    final rows = await (_db.selectOnly(_db.uploadTasks)
-          ..addColumns([_db.uploadTasks.state, _db.uploadTasks.id.count()])
-          ..where(_db.uploadTasks.accountId.equals(accountId))
-          ..groupBy([_db.uploadTasks.state]))
+  /// 账号内各状态任务数（队列 UI 徽章/摘要；全部状态都会出现，无任务计
+  /// 0）。可选 albumId/since 与 [listByAccount] 同语义（UI-01 §4.4 摘要按
+  /// 当前筛选范围聚合，仍走 SQL COUNT，不整表载入内存）。
+  Future<Map<UploadTaskState, int>> countsByState(
+    String accountId, {
+    String? albumId,
+    DateTime? since,
+  }) async {
+    final query = _db.selectOnly(_db.uploadTasks)
+      ..addColumns([_db.uploadTasks.state, _db.uploadTasks.id.count()])
+      ..where(_db.uploadTasks.accountId.equals(accountId));
+    if (albumId != null) {
+      query.where(_db.uploadTasks.albumId.equals(albumId));
+    }
+    if (since != null) {
+      query.where(
+        _db.uploadTasks.createdAt.isBiggerOrEqualValue(since.toUtc()),
+      );
+    }
+    query.groupBy([_db.uploadTasks.state]);
+    final rows = await query
         .map((row) => MapEntry(
               row.readWithConverter(_db.uploadTasks.state)!,
               row.read(_db.uploadTasks.id.count())!,