* refactor(chat): adjust mobile controls layout
Improve alignment of mobile model and agent buttons with action buttons
Constrain mobile controls to a max width to prevent overflow on small screens
* fix: improve MobileAgentButton mobile interaction
Replace touch-none with touch-pan-x to enable horizontal swipe
Wrap the agent label in a scrollable container to prevent truncation
* fix(ui): allow horizontal scroll for model label
Enable horizontal scrolling for long model labels on mobile
Prevent truncation by letting the label overflow horizontally
Improve visibility by keeping the full label accessible without clipping