Add built-in backup of the data folder (BL-0044)

The reader owns a scheduled backup into BACKUP (Compose: BACKUP_PATH mounted at
/backup, off when unset). A run pauses the scraper queue through its control
API, waits (bounded) until no job is active, writes a verified tar.gz of DATA
with db.json from memory and scraper/queue.json stored paused, excludes
runtime/lock/pid/temp files, resumes only a queue it paused, then applies
count- or day-based retention to its own archive names only. Schedule,
retention, "Back up now" and last result live in Settings > Service health.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
MaashkinoozheandClaude Opus 5.5 committed 2026-10-22 18:03:21 +02:00
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commit 086f6353f8
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!reading-direction.js
!chapter-identity.js
!catalog.js
!backup.js
!reading-analytics.js
!reading-access.js
!public/