Comprehensive documentation for feed systems and future aggregator features: New Documentation: - COMMUNITY_FEEDS.md: Complete guide to feed architecture and implementation - aggregators/PRD_AGGREGATORS.md: Product spec for RSS/aggregator features - aggregators/PRD_KAGI_NEWS_RSS.md: Kagi News integration design Updated: - PRD_POSTS.md: Refined post creation flow and security model Feed Documentation Coverage: - Architecture overview (service → repo → postgres) - Sort algorithms (hot, new, top) - Query optimization and indexing strategy - Security considerations - API examples and usage Aggregator PRDs: - RSS feed generation per community - External content aggregation - Kagi News integration patterns - Federation considerations These docs provide context for current feed implementation and roadmap for future aggregator features. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>