This commit ensures that compression jobs survive Docker container restarts
and are automatically recovered and restarted.
Changes:
- Modified CancelledError handler to preserve job status during shutdown
- Jobs now keep 'processing' or 'validating' status instead of being marked
as 'cancelled' when the app shuts down
- Added job persistence layer using SQLite database
- Implemented automatic job recovery on application startup
- Added process cleanup utilities for orphaned ffmpeg processes
- User-initiated cancellations still properly mark jobs as cancelled
- Jobs are visible in frontend after recovery
The recovery system:
1. Detects interrupted jobs (processing/validating status)
2. Cleans up orphaned ffmpeg processes and temp files
3. Restarts interrupted jobs from beginning
4. Maintains queue order and respects concurrency limits
5. Works with multiple jobs in the queue
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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