## Summary

- Replace the inline callout type selector with an accessible icon-triggered menu. - Make callout titles editable as prose while sanitizing pasted content and limiting length. - Refresh callout styling with type-specific accents, focus states, and reduced-motion support. - Keep DOM attributes synchronized reliably when callout type or title changes. - Add Playwright coverage for editing and changing callout types.

<img width="704" height="596" alt="image" src="https://github.com/user-attachments/assets/9ce1f64e-b7f0-4e0f-b3aa-e96bb4c5d21d" />

## Testing

- Added and updated Playwright UI tests in `e2e/toolbar.e2e.ts` for callout editing and type selection.