* increase camera group icon size on mobile
add an animated slider when there is not enough space for all defined camera groups
* change desktop and mobile edit camera groups icon to pencil and add desktop tooltip
* apply safe area insets to mobile layout in PWA mode using viewport-fit=cover
* adaptively size bottom bar nav targets to 48px when they fit, else compact
icon size now targets the standardized 48×48px mobile touch target (Material Design 3 / Android 48dp bottom-nav minimum)
* Move history card view to separate view and create timeline view
* Get custom time scrubber working
* Add back nav
* Show timeline bounding boxes
* Implement seeking limiter
* Use browser history to allow back button to close timeline viewer
* Fix mobile timeline and add more icons for detections
* Play when item is initially visible
