#28611 cmux NEXT menus: no wasted gutter or padding in any menu, field menus as wide as their field, the History menu is glass

Leo: "look for wastage" (2026-10-30)

Draft: the first commit measures every menu in a real browser (red first). The fixes, the measured table and the stills follow.

Changelog

none

Agent session: agent session

🤖 Generated with Claude Code

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Summary by cubic

Menus now share the AppKit grid, removing excess padding and aligning checks and labels; field menus match their trigger width and can grow for long rows.

• Select and the saved environment Host menu open at the field’s leading edge; long options stay on one line.
• The History page menu uses glass, and a new check flags oversized menu checks and row gaps.
• Browser tests measure covered menus in Chromium and WebKit and report other gallery menus.