test(TaskListScreen): add integration tests for filtered and overdue task states

- Covers empty states, celebration state, and scheduled/overdue task rendering
- Verifies proper checkbox behavior for future tasks
- Tests AppBar for sort dropdown, edit/delete actions, and calendar strip
- Adds necessary test helpers and overrides for room-specific tasks

lib/features/home/presentation/calendar_providers.dart

@@ -104,3 +104,43 @@ final calendarDayProvider =
     );
   });
 });
+
+/// Room-scoped calendar day state: tasks for the selected date within a room.
+///
+/// Mirrors [calendarDayProvider] but filters by [roomId].
+/// Uses the shared [selectedDateProvider] so date selection is consistent
+/// across HomeScreen and room views.
+final roomCalendarDayProvider =
+    StreamProvider.autoDispose.family<CalendarDayState, int>((ref, roomId) {
+  final db = ref.watch(appDatabaseProvider);
+  final selectedDate = ref.watch(selectedDateProvider);
+  final sortOption = ref.watch(sortPreferenceProvider);
+
+  final now = DateTime.now();
+  final today = DateTime(now.year, now.month, now.day);
+  final isToday = selectedDate == today;
+
+  final dayTasksStream =
+      db.calendarDao.watchTasksForDateInRoom(selectedDate, roomId);
+
+  return dayTasksStream.asyncMap((dayTasks) async {
+    final List<TaskWithRoom> overdueTasks;
+
+    if (isToday) {
+      overdueTasks = await db.calendarDao
+          .watchOverdueTasksInRoom(selectedDate, roomId)
+          .first;
+    } else {
+      overdueTasks = const [];
+    }
+
+    final totalTaskCount = await db.calendarDao.getTaskCountInRoom(roomId);
+
+    return CalendarDayState(
+      selectedDate: selectedDate,
+      dayTasks: _sortTasks(dayTasks, sortOption),
+      overdueTasks: overdueTasks,
+      totalTaskCount: totalTaskCount,
+    );
+  });
+});