cmux NEXT: minimap rail and Apps chips keep the shared scroller (fixes the check-scrollbars base red)
cmux-next checks fails on feat-cmux-next at check-scrollbars: 13 hits over its ceiling of 10. Three are web rules hiding a scrollbar, which SCROLLBARS-THIN forbids (scrollbar-width and ::-webkit-scrollbar turn WebKit's overlay scroller into a custom one):
threadMinimap.css: the minimap list (#22879) setscrollbar-width: noneand::-webkit-scrollbar { display: none }.pages/apps/styles.css: the narrow Discover chips strip setscrollbar-width: none.
Both now keep the shared thin overlay scroller, hidden until the user scrolls. The minimap keeps its edge fades and overscroll-behavior: contain. Removing only the minimap's two would leave 11, still over the ceiling, so the chips line goes too. The check is now at 10 (warnings only; the rest are Swift ratchet debt).
Tests
SCROLLBARS_WARN_MAX=10 scripts/cmux-next/check-scrollbars.shon this branch: passes (10 warnings), and on feat-cmux-next it fails (13 hits).- No test or gallery asserts these scrollbars are hidden.
No capture: webview CSS only; a scroller that shows only while scrolling, no change at rest.
Agent session: cosmic-gray
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Summary by cubic
Fixes the cmux-next check-scrollbars failure (13 hits over its ceiling of 10) by stopping the minimap rail and Apps Discover chips from hiding their scrollbars.
Both hid them with scrollbar-width: none and, for the minimap, ::-webkit-scrollbar { display: none } — rules that turn WebKit's overlay scroller into a custom one, which SCROLLBARS-THIN forbids. They now keep the shared thin overlay scroller, hidden until the user scrolls, so there's no visual change at rest. The minimap keeps its edge fades and overscroll-behavior: contain; the check drops to 10 warnings.
Tests
SCROLLBARS_WARN_MAX=10 scripts/cmux-next/check-scrollbars.shpasses on this branch and fails onfeat-cmux-next(13 hits).- No test or gallery asserts these scrollbars are hidden.