- Remove Combine import and cancellables
- Use NSKeyValueObservation for timeControlStatus (controlled teardown)
- Invalidate itemStatusObserver before replacing playerItem
- Store endObserver token for proper removal
- Add cleanup() method called on view disappear
- Proper deinit with direct property cleanup (nonisolated-safe)
- UI defined in player.json (Bricks JSON schema)
- Custom widgets: VideoPlayer (AVPlayer layer), ProgressSlider (seek bar)
- PlayerBridge connects AVPlayer to BricksEngine event bus
- All interactions via binds/events (no imperative UI code)
- Depends on SwiftBricks SPM package