Copied from ui-design.pen as template. Contains existing 4-panel layout
frames showing sidebar, note list, editor, and inspector — the areas
where property sync and wikilink updates are now reflected immediately.
Note: Pencil app not available for interactive editing. Two logical
frames to call out:
1. Property sync: Inspector change → immediate sidebar/notelist update
2. Wikilink sync: rename → open tabs show updated wikilinks
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
