## Summary

Describe what this PR changes and why.

## Testing

- [ ] `npm test`
- [ ] `npm run test:ci` (when relevant)
- Evidence (logs, screenshots, notes):

## Docs impact

- [ ] No user-facing docs changes needed
- [ ] Updated `README.md`
- [ ] Updated `DEMO.md`
- [ ] Updated `SECURITY.md`
- [ ] Updated `CONTRIBUTING.md`

## Screenshots / GIFs (if UI changes)

Attach screenshots/GIFs for changes to Run Details / Run Logs / Prompt Builder.

