refactor: 优化日历状态管理与首页输入框，添加API客户端抽象

apps/lib/core/router/app_router.dart

@@ -14,6 +14,7 @@ import '../../features/contacts/ui/screens/add_contact_screen.dart';
 import '../../features/calendar/ui/screens/calendar_dayweek_screen.dart';
 import '../../features/calendar/ui/screens/calendar_month_screen.dart';
 import '../../features/calendar/ui/screens/calendar_event_detail_screen.dart';
+import '../../features/calendar/ui/calendar_time_utils.dart';
 import '../../features/todo/ui/screens/todo_quadrants_screen.dart';
 import '../../features/todo/ui/screens/todo_detail_screen.dart';
 import '../../features/settings/ui/screens/settings_screen.dart';
@@ -44,6 +45,7 @@ GoRouter createAppRouter(AuthBloc authBloc) {
       final authState = authBloc.state;
       final isAuthenticated = authState is AuthAuthenticated;
       final isAuthRoute =
+          state.matchedLocation == '/' ||
           state.matchedLocation.startsWith('/login') ||
           state.matchedLocation.startsWith('/register');
       final isProtected = _protectedRoutes.any(
@@ -91,11 +93,21 @@ GoRouter createAppRouter(AuthBloc authBloc) {
       ),
       GoRoute(
         path: '/calendar/dayweek',
-        builder: (context, state) => const CalendarDayWeekScreen(),
+        builder: (context, state) {
+          final fromHome = state.uri.queryParameters['from'] == 'home';
+          final initialDate = parseYmd(state.uri.queryParameters['date']);
+          return CalendarDayWeekScreen(
+            initialDate: initialDate,
+            resetToToday: fromHome,
+          );
+        },
       ),
       GoRoute(
         path: '/calendar/month',
-        builder: (context, state) => const CalendarMonthScreen(),
+        builder: (context, state) {
+          final fromHome = state.uri.queryParameters['from'] == 'home';
+          return CalendarMonthScreen(resetToToday: fromHome);
+        },
       ),
       GoRoute(
         path: '/calendar/events/:id',