- Add workers API for pool management
- Add jobs API for queue operations
- Add scan-rules API for CRUD operations
- Add scanner API for control and status
- Add settings API for configuration management
- Add system API for resource monitoring
- Add filesystem API for path browsing
- Add setup wizard API endpoint
- Add backend/config.py with Pydantic settings validation
- Support for standalone, provider, and hybrid operation modes
- Multi-database backend configuration (SQLite/PostgreSQL/MariaDB)
- Environment variable validation with helpful error messages
- Worker and Whisper model configuration
