YoVinchen 6443dc897d feat(backend): add database SQL export/import with backup ...

- Enable rusqlite backup feature for SQL dump support
- Implement export_sql to generate SQLite-compatible SQL dumps
- Implement import_sql with automatic backup before import
- Add snapshot_to_memory to avoid long-held database locks
- Add backup rotation to retain latest 10 backups
- Support atomic import with rollback on failure

2025-11-24 00:45:34 +08:00

2.0 KiB

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