Global search: Group Header Height

[elmarburke]

Description

• Adjust the height of the headers to the height of the sidebar.

Testing

• Collapsed headers have the same height as in the sidebar

---

Note

Use CSS variables to control header and item heights and update virtualization and header styling to match sidebar dimensions.

• Global Search UI:
  • Virtualization (plugins/global-search/src/components/Results.tsx):
    • estimateSize now uses computed CSS variables --header-height and --item-height (with fallbacks) instead of hardcoded values.
    • Sticky header rows receive inline height from the virtualizer.
  • Styling:
    • Define --header-height and --item-height in plugins/global-search/src/styles.css.
  • Group Header (plugins/global-search/src/components/GroupHeader.tsx):
    • Replace fixed heights with calc-based sizing tied to --header-height.
    • Adjust fade-out pseudo-element position to top-(--header-height).
    • Change hidden hr styling to use modal border colors instead of opacity.

^{Written by Cursor Bugbot for commit 9957563. This will update automatically on new commits. Configure here.}

[cursor]

Comment @cursor review or bugbot run to trigger another review on this PR

[triozer]

LGTM