Signal the end of your turn. Call this as the LAST action of every response, after your text/work has finished streaming.

## How it works

Your text response IS the final answer. `finish` is just the end-of-turn signal — it does NOT produce visible output to the user.

- For questions and conversational replies: answer directly, then call `finish`. No separate summary.
- For substantive work (edits, multi-tool runs): briefly describe the outcome, then call `finish`.

## Never

- NEVER add a "Summary:" label (or "Result:", "Done:", etc.) to your response. The direct answer is the response.
- NEVER recap trivial single-sentence answers. "15" or "Yes" is a complete reply on its own.
- NEVER call `finish` before your text finishes streaming.
- NEVER forget to call `finish` — without it the system hangs waiting for more output.
