Bump app version to 0.5.1 and add auto-update support

- Implemented auto-update logic in `ScribeTopBar` with update notification and user interaction.
- Integrated `@tauri-apps/plugin-updater` and `@tauri-apps/plugin-process` for updater functionality.
- Added automatic migration feature with `autoMigrateElectron` support and UI feedback.
- Refactored app architecture with new routing, components, and layout for better modularity.
- Enhanced JSON response handling in API client for robust data parsing.
- Updated locales to include new translations for update and migration-related UI.

lib/tauri.ts

@@ -700,6 +700,20 @@ export async function importFromElectron(migrationFilePath: string): Promise<Mig
     return invoke<MigrationResult>('import_from_electron', {data: {migrationFilePath}});
 }
 
+export interface AutoMigrationResult {
+    migrated: boolean;
+    userId: string | null;
+    tokenMigrated: boolean;
+    keyMigrated: boolean;
+    pinMigrated: boolean;
+    dbMigrated: boolean;
+    error: string | null;
+}
+
+export async function autoMigrateElectron(): Promise<AutoMigrationResult> {
+    return invoke<AutoMigrationResult>('auto_migrate_electron');
+}
+
 // ─── Window Management ──────────────────────────────────────
 
 let loginWindowOpening = false;