feat: complete leave approval MVP

mobile/lib/app/app.dart

@@ -1,12 +1,26 @@
 import 'package:aioa_mobile/app/router.dart';
 import 'package:aioa_mobile/app/theme.dart';
+import 'package:aioa_mobile/core/auth/auth_session_controller.dart';
+import 'package:aioa_mobile/core/auth/login_page.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:aioa_mobile/core/notifications/push_registration_controller.dart';
 
-class AioaApp extends StatelessWidget {
+class AioaApp extends ConsumerWidget {
   const AioaApp({super.key});
 
   @override
-  Widget build(BuildContext context) {
+  Widget build(BuildContext context, WidgetRef ref) {
+    final auth = ref.watch(authSessionProvider);
+    if (auth.isLoading) {
+      return MaterialApp(
+        debugShowCheckedModeBanner: false,
+        theme: buildAioaTheme(),
+        home: const Scaffold(body: Center(child: CircularProgressIndicator())),
+      );
+    }
+    if (auth.value == null) return const LoginPage();
+    ref.watch(pushRegistrationProvider);
     return MaterialApp.router(
       title: 'AIOA',
       debugShowCheckedModeBanner: false,

mobile/lib/app/router.dart

@@ -2,6 +2,8 @@ import 'package:aioa_mobile/app/shell.dart';
 import 'package:aioa_mobile/features/assistant/presentation/assistant_page.dart';
 import 'package:aioa_mobile/features/form/presentation/leave_form_page.dart';
 import 'package:aioa_mobile/features/profile/presentation/profile_page.dart';
+import 'package:aioa_mobile/features/requests/presentation/leave_request_detail_page.dart';
+import 'package:aioa_mobile/features/requests/presentation/leave_request_list_page.dart';
 import 'package:aioa_mobile/features/tasks/presentation/tasks_page.dart';
 import 'package:aioa_mobile/features/workspace/presentation/workspace_page.dart';
 import 'package:flutter/material.dart';
@@ -27,5 +29,11 @@ final appRouter = GoRouter(
         child: const LeaveFormPage(),
       ),
     ),
+    GoRoute(path: '/leave', builder: (_, _) => const LeaveRequestListPage()),
+    GoRoute(
+      path: '/leave/:id',
+      builder: (_, state) =>
+          LeaveRequestDetailPage(id: state.pathParameters['id']!),
+    ),
   ],
 );