Adds touch-screen support for resizing filmstrip and chat panels to enable tablet and touch-laptop users to adjust panel widths. Previously, drag handles only worked with mouse hover, making panels non-resizable on touch devices.
Changes:
- Implement Pointer Events API for unified mouse/touch handling
- Add touch device detection with screen size threshold
- Make drag handles always visible on touch devices with padding for easier tapping
- Maintain identical visual layout between touch and non-touch versions
Touch devices with sufficiently large screens now have fully functional drag handles with appropriate hit targets while smaller devices remain disabled to preserve mobile UX.
* fix(video-select): remove video preview from device selection and fix video switch on android browsers
* simplify if statement
* add for all mobile devices the stop stream
* move mobile check to middleware
* code review
