refactor: fixed mobile session button for android

Replaces custom pointer-capture touch logic with touch-action: manipulation
Aligns with the pattern used across other mobile surfaces

packages/ui/src/components/chat/MobileSessionStatusBar.tsx

@@ -418,7 +418,6 @@ export const MobileSessionPanelTrigger: React.FC<MobileSessionPanelTriggerProps>
   const isMobile = useUIStore((state) => state.isMobile);
   const open = useUIStore((state) => state.mobileSessionPanelOpen);
   const setOpen = useUIStore((state) => state.setMobileSessionPanelOpen);
-  const handledTouchRef = React.useRef(false);
 
   // Ensure the cross-project session list is loaded once, so the panel reflects
   // every project, not just the active directory.
@@ -440,21 +439,8 @@ export const MobileSessionPanelTrigger: React.FC<MobileSessionPanelTriggerProps>
         'rounded-md relative hover:bg-[var(--interactive-hover)]',
         open && 'text-[var(--primary-base)]'
       )}
-      onPointerDownCapture={(event) => {
-        if (event.pointerType === 'touch') {
-          event.preventDefault();
-          event.stopPropagation();
-          handledTouchRef.current = true;
-          setOpen(!open);
-        }
-      }}
-      onClick={() => {
-        if (handledTouchRef.current) {
-          handledTouchRef.current = false;
-          return;
-        }
-        setOpen(!open);
-      }}
+      style={{ touchAction: 'manipulation' }}
+      onClick={() => setOpen(!open)}
       title={t('mobile.sessions.search.section.sessions')}
       aria-label={t('mobile.sessions.search.section.sessions')}
       aria-expanded={open}