Feature request: let Codex rename the current conversation to the PR number

Codex currently cannot rename the current conversation itself, even when the user explicitly asks it to. It can infer the desired title, but it cannot apply the rename in the app. This feels like a basic missing capability. Example use cases: * Rename the thread to a PR number * Rename the thread to a ticket number * Rename the thread to a short task summary Suggested behavior: If the user says “rename this discussion to PR #1234” or “name this thread auth cleanup”, Codex should be able to do it directly