2ea1f5cd95
- Create separate RssParser and AtomParser implementing IParser interface - Add utility functions for ID generation (djb2 hash) and date parsing - Support both RSS (RFC 822) and Atom (ISO 8601) date formats - Handle Atom elements with attributes (type="html") via #text property - Map RSS <description> to summary and <content:encoded> to content - Map Atom <summary> to summary and <content> to content - Prefer Atom link[@rel="alternate"] for article URLs - Throw descriptive errors for malformed XML and missing required fields - Add comprehensive test coverage for both parsers (32 tests total)