- Add FeedParser.kt with automatic feed type detection
- Add RSSParser.kt for RSS 2.0 feeds
- Add AtomParser.kt for Atom 1.0 feeds
- Add comprehensive unit tests for both parsers
- Support iTunes namespace and enclosures
- Fix pre-existing compilation issues in the codebase
- Update build.gradle.kts with proper dependencies and AGP 8.5.0
- Add SubscriptionEntity, FeedItemEntity, SearchHistoryEntity
- Create SubscriptionDao, FeedItemDao, SearchHistoryDao with CRUD operations
- Implement RssDatabase with FTS5 virtual table for full-text search
- Add type converters for Date, String lists, and FeedItem lists
- Implement cascade delete for feed items when subscription is removed
- Add comprehensive unit tests for all DAOs
- Add database integration tests for entity round-trips and FTS
- Configure Room testing dependencies
