Integrate offline support and improve error handling across app

- Add `OfflineContext` to manage offline state and interactions within components.
- Refactor session logic in `ScribeControllerBar` and `page.tsx` to handle offline scenarios (e.g., check connectivity before enabling GPT features).
- Enhance offline PIN setup and verification with better flow and error messaging.
- Optimize database IPC handlers to initialize and sync data in offline mode.
- Refactor code to clean up redundant logs and ensure stricter typings.
- Improve consistency and structure in handling online and offline operations for smoother user experience.

electron/database/repositories/book.repository.ts

@@ -259,7 +259,7 @@ export default class BookRepo {
         let result:RunResult
         try {
             const db: Database = System.getDb();
-            result = db.run('INSERT INTO erit_books (book_id,type,author_id, title, hashed_title, sub_title, hashed_sub_title, summary, serie_id, desired_release_date, erit_books.desired_word_count) VALUES (?,?,?,?,?,?,?,?,?,?,?)', [bookId, type, userId, encryptedTitle, hashedTitle, encryptedSubTitle, hashedSubTitle, encryptedSummary, serie, publicationDate ? publicationDate : null, desiredWordCount]);
+            result = db.run('INSERT INTO erit_books (book_id, type, author_id, title, hashed_title, sub_title, hashed_sub_title, summary, serie_id, desired_release_date, desired_word_count) VALUES (?,?,?,?,?,?,?,?,?,?,?)', [bookId, type, userId, encryptedTitle, hashedTitle, encryptedSubTitle, hashedSubTitle, encryptedSummary, serie, publicationDate ? publicationDate : null, desiredWordCount]);
         } catch (err: unknown) {
             if (err instanceof Error) {
                 console.error(`DB Error: ${err.message}`);