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.

electron/ipc/book.ipc.ts

@@ -117,7 +117,15 @@ ipcMain.handle('db:book:syncSave', createHandler<CompleteBook, boolean>(
 // GET /book/:id - Get single book
 ipcMain.handle('db:book:bookBasicInformation', createHandler<string, BookProps>(
         async function(userId: string, bookId: string, lang: 'fr' | 'en'):Promise<BookProps> {
-            return await Book.getBook(userId, bookId);
+            return await Book.getBook(userId, bookId, lang);
+        }
+    )
+);
+
+// GET
+ipcMain.handle('db:book:uploadToServer', createHandler<string, CompleteBook>(
+        async function(userId: string, bookId: string, lang: 'fr' | 'en'):Promise<CompleteBook> {
+            return await Book.uploadBookForSync(userId, bookId, lang);
         }
     )
 );

electron/ipc/chapter.ipc.ts

@@ -160,5 +160,3 @@ ipcMain.handle('db:chapter:information:remove', createHandler<RemoveChapterInfoD
         }
     )
 );
-
-console.log('[IPC] Chapter handlers registered');

electron/ipc/location.ipc.ts

@@ -102,5 +102,3 @@ ipcMain.handle('db:location:subelement:delete', createHandler<DeleteLocationSubE
         }
     )
 );
-
-console.log('[IPC] Location handlers registered');

electron/ipc/offline.ipc.ts

@@ -1,7 +1,7 @@
 import { ipcMain } from 'electron';
 import { createHandler } from '../database/LocalSystem.js';
 import * as bcrypt from 'bcrypt';
-import { getSecureStorage } from '../storage/SecureStorage.js';
+import SecureStorage, { getSecureStorage } from '../storage/SecureStorage.js';
 import { getDatabaseService } from '../database/database.service.js';
 
 interface SetPinData {
@@ -19,21 +19,18 @@ interface OfflineModeData {
 
 ipcMain.handle('offline:pin:set', async (_event, data: SetPinData) => {
   try {
-    const storage = getSecureStorage();
-    const userId = storage.get<string>('userId');
+    const storage: SecureStorage = getSecureStorage();
+    const userId: string | null = storage.get<string>('userId');
 
     if (!userId) {
       return { success: false, error: 'No user logged in' };
     }
-
-    // Hash the PIN
-    const hashedPin = await bcrypt.hash(data.pin, 10);
+    
+    const hashedPin: string = await bcrypt.hash(data.pin, 10);
 
     // Store hashed PIN
     storage.set(`pin-${userId}`, hashedPin);
     storage.save();
-
-    console.log('[Offline] PIN set for user');
     return { success: true };
   } catch (error) {
     console.error('[Offline] Error setting PIN:', error);
@@ -73,8 +70,7 @@ ipcMain.handle('offline:pin:verify', async (_event, data: VerifyPinData) => {
         console.error('[Offline] No encryption key found for user');
         return { success: false, error: 'No encryption key found' };
       }
-
-      console.log('[Offline] PIN verified, user authenticated locally');
+      
       return {
         success: true,
         userId: lastUserId
@@ -99,7 +95,6 @@ ipcMain.handle('offline:mode:set', (_event, data: OfflineModeData) => {
     }
 
     storage.save();
-    console.log('[Offline] Mode set to:', data.enabled);
 
     return { success: true };
   } catch (error) {
@@ -157,6 +152,4 @@ ipcMain.handle('offline:sync:check', () => {
     console.error('[Offline] Error checking sync:', error);
     return { shouldSync: false };
   }
-});
-
-console.log('[IPC] Offline handlers registered');
+});