Drop the status item's hand-rolled OverlayEntry + bespoke popover rows for the
shared anchored-overlay (above/end, autoFlip) and ClideMenu. The High-contrast
toggle becomes a keepOpenOnSelect item; theme rows mark the active one. Nav,
focus capture, barrier and Esc now come from the primitives.
The popover tests move to anchoredHarness (a real sized overlay) so the
above-anchored panel hit-tests on-screen, which the shared canSizeOverlay
harness does not.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>