Introduce series management functionality and repository updates

- Added `series-world.repo.ts` to handle database operations related to series worlds and their elements.
- Implemented `series-sync.repo.ts` for managing synchronization between books and series.
- Expanded `spell.ipc.ts` data models to include `seriesSpellId` for spell synchronization.
- Refactored `insertSpellTag` method in `spelltag.repo.ts` for improved error handling and logic clarity.

electron/database/repositories/book.repository.ts

@@ -58,6 +58,10 @@ export interface BookToolsTable extends Record<string, SQLiteValue> {
 
 export interface SyncedBookToolsResult extends Record<string, SQLiteValue> {
     last_update: number;
+    characters_enabled: number;
+    worlds_enabled: number;
+    locations_enabled: number;
+    spells_enabled: number;
 }
 
 export default class BookRepo {
@@ -440,7 +444,7 @@ export default class BookRepo {
     static fetchSyncedBookTools(userId: string, bookId: string, lang: 'fr' | 'en'): SyncedBookToolsResult | null {
         try {
             const db: Database = System.getDb();
-            const query: string = 'SELECT last_update FROM book_tools WHERE user_id = ? AND book_id = ?';
+            const query: string = 'SELECT last_update, characters_enabled, worlds_enabled, locations_enabled, spells_enabled FROM book_tools WHERE user_id = ? AND book_id = ?';
             const params: SQLiteValue[] = [userId, bookId];
             const result = db.get(query, params) as SyncedBookToolsResult | undefined;
             return result ?? null;