The capsule close button (and context-menu close) only stopped playback and
cleared the queue, leaving the separate macOS player window open on a black
frame. Route both through a shared closeVideo() that also sets
isPlayerExpanded = false, mirroring PlaybackCommands.closeVideo, so the
player window is dismissed.
- Replace the full-width material overlay bar with a compact, centered
capsule (Apple Music style) via a macOS-specific macOSCapsuleLayout
- Extend glassBackground() to use real Liquid Glass on macOS 26 with a
material fallback on macOS 15-25 (mirrors the PlayerOverlayButton pattern)
- Remove the duplicate close button (close now comes only from the
configurable button set)
- Keep the capsule visible in the main window while the separate player
window is open (window mode), still hidden in sheet mode
When PiP is active, the MPV render view shows a black frame since
rendering goes to the PiP sample buffer layer. Overlay the video
thumbnail (preferring DeArrow) on top to cover the black area,
fading it in/out smoothly when PiP starts/stops.
