Upgrade database schema to version 2 and remove unused meta_* columns

- Increment `SCHEMA_VERSION` to 2 in `schema.ts`.
- Remove all `meta_*` columns from database tables.
- Add migration logic to handle schema upgrades and clean up unused columns.
- Modify database models and repository methods to exclude `meta_*` fields for stricter typings and improved structure.
- Refactor and optimize query statements across repositories to align with new schema changes.

electron/ipc/chapter.ipc.ts

@@ -4,9 +4,9 @@ import Chapter from '../database/models/Chapter.js';
 import type { ChapterProps, CompanionContent, ActStory } from '../database/models/Chapter.js';
 
 interface GetWholeChapterData {
-    chapterId: string;
+    id: string;
     version: number;
-    bookId?: string;
+    bookid: string;
 }
 
 interface SaveChapterContentData {
@@ -53,7 +53,7 @@ ipcMain.handle('db:book:chapters', createHandler<string, ChapterProps[]>(
 // GET /chapter/whole - Get whole chapter
 ipcMain.handle('db:chapter:whole', createHandler<GetWholeChapterData, ChapterProps>(
         function(userId: string, data: GetWholeChapterData, lang: 'fr' | 'en'): ChapterProps {
-            return Chapter.getWholeChapter(userId, data.chapterId, data.version, data.bookId, lang);
+            return Chapter.getWholeChapter(userId, data.id, data.version, data.bookid, lang);
         }
     )
 );