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feat: automated daily SQLite database backups with retention

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New DatabaseBackupHostedService + SqliteDatabaseBackupRunner:
- daily VACUUM INTO snapshot to <Data:Root>/backups (safe with WAL)
- catch-up backup at startup when none exists from the last 24h
- retention pruning (Backups:RetainCount, default 14)
- warns and stays idle on MySQL/MariaDB where external backups apply

Production previously had no automated database backup on Linux
(the /api/backup endpoint is Windows-DPAPI-only).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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cesnimda
2026-07-02 21:49:58 +02:00
parent e352aaeaac
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README.md
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@@ -133,6 +133,10 @@ Common keys:
- `Exports:DailyEnabled`: enable/disable daily export background job
- `Exports:DailyFolder`: export destination (relative to `Data:Root` if not absolute)
- `Exports:DailyHourLocal`: local hour (0–23) when the daily export runs
- `Backups:Enabled`: enable/disable the automated SQLite backup job (default `true`)
- `Backups:HourLocal`: local hour (0–23) when the daily database backup runs (default `3`)
- `Backups:RetainCount`: how many backup files to keep in `<Data:Root>/backups` (default `14`)
- Backups use SQLite `VACUUM INTO` (consistent snapshot, safe with WAL). A catch-up backup runs at startup when none exists from the last 24 h. For MySQL/MariaDB configure external backups instead (see `deploy/MARIADB.md`).
- `Auth:GoogleClientId`: if set, enables JWT bearer validation for Google ID tokens
- `Auth:JwtKey`: secret used to sign local JWTs for username/password login (set via env var `Auth__JwtKey`)
- `Auth:JwtIssuer`: JWT issuer (default `JobTrackerApi`)