Add CLI entry point, RSS content extraction, and image support
Features:
- Add CLI with commands: start, add, remove, list, fetch, status, items
- Auto-detect RSS format when adding feeds
- Auto-run database migrations on startup
- Extract full HTML content from RSS description field (NOS-style feeds)
- Extract image URLs from RSS enclosure tags
- Display images in terminal output with emoji
- Include imageUrl in JSON formatter output
Database:
- Add image_url column to feed_items table
- Update storage layer to persist imageUrl field
Tests:
- Add 10 CLI integration tests
- Add 3 RSS parser tests for image/content extraction
- Add 2 storage tests for imageUrl persistence
Dependencies:
- Add commander for CLI framework
All 144 tests passing
c79eb6d76d