Job Worker System:
- Add polling-based job worker (max 2 concurrent processors)
- Create monitor_jobs records when videos are registered
- Link videos.job_id to monitor_jobs
- Fix type mismatches (i32 vs i64) for database IDs
Duplicate Registration:
- Check if video already exists before registering
- Return existing video info with already_exists: true
- Use canonical path for UUID computation
USER_DATA_ROOT Configuration:
- Add MOMENTRY_USER_DATA_ROOT environment variable
- UUID computed from relative path (username/filename)
- Ensures consistent UUIDs when data root changes
- Add separate momentry_playground binary with distinct configuration
- Production (momentry): Port 3002, Redis prefix 'momentry:'
- Development (momentry_playground): Port 3003, Redis prefix 'momentry_dev:'
- Add SERVER_PORT and REDIS_KEY_PREFIX config via environment variables
- Replace all hardcoded Redis key prefixes with configurable values
- Create .env.development for playground environment settings
- Update .env with production defaults
- Add dotenv dependency for environment file loading
Configuration isolation allows running both binaries simultaneously
without port conflicts or Redis key collisions.
