Add db:export and db:import for database backups

Made-with: Cursor

README.md

@@ -64,6 +64,8 @@ npm run start
 npm run db:generate
 npm run db:migrate
 npm run db:studio
+npm run db:export   # Backup database
+npm run db:import   # Restore from backup
 ```
 
 You can also run per workspace:
@@ -117,6 +119,25 @@ Then run:
 npm run db:migrate
 ```
 
+### Backups (export / import)
+
+Create backups and restore if needed:
+
+```bash
+# Export (creates timestamped file in backend/data/backups/)
+npm run db:export
+
+# Export to custom path
+npm run db:export -- -o ./my-backup.db    # SQLite
+npm run db:export -- -o ./my-backup.sql   # PostgreSQL
+
+# Import (stop the backend server first)
+npm run db:import -- ./data/backups/spanglish-2025-03-07-143022.db
+npm run db:import -- --yes ./data/backups/spanglish-2025-03-07.sql   # Skip confirmation
+```
+
+**Note:** Stop the backend before importing so the database file is not locked.
+
 ## Production deployment (nginx + systemd)
 
 This repo includes example configs in `deploy/`: