## What changed

<!-- One or two sentences. What does this PR do? -->

## Why

<!-- What problem does this solve? Link to an issue or discussion if one exists. -->

## How to verify

<!--
Steps to test this locally:
1. Run `node server.js`
2. Open http://localhost:4000
3. ...
-->

## What's out of scope

<!-- What did you intentionally NOT change? Helps reviewers stay focused. -->

## Checklist

- [ ] Tested locally with `node server.js`
- [ ] One focused change, not bundled with unrelated fixes
- [ ] No new external service dependencies
- [ ] Does not read, store, or intercept agent prompts/responses