feat: Implement TTS playback store and enhance reading progress synchronization

- Added ReaderTtsPlaybackStore to manage TTS start requests with a maximum of 4 pending requests.
- Updated app configuration to use a production API URL.
- Enhanced BookmarkModel to infer type when not provided by the API for backward compatibility.
- Introduced methods in LocalStore for saving, loading, and clearing the last route path.
- Implemented syncProgress method in BookshelfNotifier to update reading progress and bookmarks from the server.
- Modified ReaderScreen to handle chapter navigation and TTS playback more effectively, including auto-start logic.
- Updated TtsPlayerWidget to accept additional parameters for chapter navigation.
- Enhanced TtsNotifier to handle new parameters for TTS requests and manage playback state.
- Improved SplashScreen to restore the last visited route after splash screen display.

lib/features/splash/presentation/splash_screen.dart

@@ -1,25 +1,48 @@
 import 'dart:async';
 
 import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 
 import '../../../app/router/route_names.dart';
+import '../../../core/storage/local_store.dart';
 
-class SplashScreen extends StatefulWidget {
+class SplashScreen extends ConsumerStatefulWidget {
   const SplashScreen({super.key});
 
   @override
-  State<SplashScreen> createState() => _SplashScreenState();
+  ConsumerState<SplashScreen> createState() => _SplashScreenState();
 }
 
-class _SplashScreenState extends State<SplashScreen> {
+class _SplashScreenState extends ConsumerState<SplashScreen> {
   Timer? _redirectTimer;
 
+  bool _isRestorableRoute(String path) {
+    if (path.isEmpty || path == RouteNames.splash) return false;
+    return path == RouteNames.home ||
+        path == RouteNames.login ||
+        path == RouteNames.search ||
+        path.startsWith('${RouteNames.search}?') ||
+        path == RouteNames.genres ||
+        path == RouteNames.bookshelf ||
+        path == RouteNames.profile ||
+        path == RouteNames.settings ||
+        path.startsWith('/novel/') ||
+        path.startsWith('/reader/') ||
+        path.startsWith('/comments/');
+  }
+
   @override
   void initState() {
     super.initState();
-    _redirectTimer = Timer(const Duration(milliseconds: 700), () {
+    _redirectTimer = Timer(const Duration(milliseconds: 700), () async {
       if (!mounted) return;
+      final lastPath = await ref.read(localStoreProvider).loadLastRoutePath();
+      if (!mounted) return;
+      if (lastPath != null && _isRestorableRoute(lastPath)) {
+        context.go(lastPath);
+        return;
+      }
       context.go(RouteNames.home);
     });
   }