t3_thread_update description: Rename a thread (`action:'rename'` with `title`) or regenerate its title. Omit `threadId` for this thread. Workspace and branch cannot change here.
advertised action: {"type":"string","enum":["rename","regenerate_title"]}
advertised properties: threadId, action, title, clientRequestId
separate PR tools: link_pull_request, unlink_pull_request
rename -> accepted
link_pull_request -> rejected: Cause([Fail(SchemaError(Expected "rename" | "regenerate_title" |   at ["action"]))])
unlink_pull_request -> rejected: Cause([Fail(SchemaError(Expected "rename" | "regenerate_title" |   at ["action"]))])