Synced from monorepo

Changes:
- Remind the model to finish previous work on mid-turn send
- Report the workspace server version in workspace.info
- /rename --auto unpins a manual title
- /rename title cap, ghost-prefill, and cross-host manual titles
- /rename remote revert, chat-kind plumbing, and doc fixes
- Cap and pre-warm tokio blocking pools to stop EAGAIN aborts