- Add UserRelationship model with unidirectional relationships
- Implement friendship service with GitHub requirement
- Add REST endpoints for friend requests, acceptance, and listing
- Add single relationship-updated WebSocket event
- Support batch profile fetching with consistent schemas
Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)
Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>
