- Delete unused Grant struct (persona-era, zero references)
- Delete CompositeModelKey (never called)
- Remove dead comment-only type stubs (NoteGraph, ProjectChannel, etc.)
- Remove empty Chat/Channel event sections from route table
- Remove dead chat.typing/channel.typing condition in WS subscriber
- Update bus doc examples and test labels to use real event names
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
