WsMessageType:
| "session:new"
| "session:adulting"
| "session:reconnect"
| "session:redirect"
| "verb:hook"
| "dial:confirm"
| "call:status"
| "verb:status"
| "llm:event"
| "llm:tool-call"
| "tts:streaming-event"
| "tts:tokens-result"
| "jambonz:error"
WebSocket message types received from jambonz.