- vector_store sends {type:"vector_stored",id}; wrapped in try/catch
- set_state no longer sends state_result (fire-and-forget)
- subscribe sends {type:"subscribed",stream} confirmation
- remove broken myPresence lookup in mesh_info
- add WSVectorStoredMessage + WSSubscribedMessage to types union
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>