Add multi-language support and new repository methods for book synchronization

- Extend repository methods to handle API requests for fetching books, chapters, characters, and other entities with multilingual support (`lang: 'fr' | 'en'`).
- Add `uploadBookForSync` logic to consolidate and decrypt book data for synchronization.
- Refactor schema migration logic to remove console logs and streamline table recreation.
- Enhance error handling across database repositories and IPC methods.

context/OfflineProvider.tsx

@@ -42,8 +42,7 @@ export default function OfflineProvider({ children }: OfflineProviderProps) {
                 isDatabaseInitialized: true,
                 error: null
             }));
-
-            console.log('Database initialized successfully for user:', userId);
+            
             return true;
         } catch (error) {
             console.error('Failed to initialize database:', error);
@@ -57,17 +56,9 @@ export default function OfflineProvider({ children }: OfflineProviderProps) {
     }, []);
 
     const toggleOfflineMode = useCallback(() => {
-        setOfflineMode(prev => {
-            const newManuallyOffline = !prev.isManuallyOffline;
-            const newIsOffline = newManuallyOffline || !prev.isNetworkOnline;
-
-            console.log('Toggle offline mode:', {
-                wasManuallyOffline: prev.isManuallyOffline,
-                nowManuallyOffline: newManuallyOffline,
-                wasOffline: prev.isOffline,
-                nowOffline: newIsOffline,
-                networkOnline: prev.isNetworkOnline
-            });
+        setOfflineMode((prev:OfflineMode):OfflineMode => {
+            const newManuallyOffline:boolean = !prev.isManuallyOffline;
+            const newIsOffline:boolean = newManuallyOffline || !prev.isNetworkOnline;
 
             return {
                 ...prev,