fix: preserve chat composer focus on mobile keyboard

Keeps the textarea reference available during mobile viewport adjustments
Ensures the composer scrolls back into view after keyboard interactions
Updates text selection menu dependencies to include the current session

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

@@ -4265,6 +4265,7 @@ const ChatInputComponent: React.FC<ChatInputProps> = ({ onOpenSettings, scrollTo
         if (!isMobile || !isMobileExpanded || isCapacitorApp()) return;
         const vv = window.visualViewport;
         const form = composerFormRef.current;
+        const textarea = textareaRef.current;
         if (!vv || !form) return;
         // The form is trapped inside lower stacking contexts (the composer
         // wrapper's z-10), so it cannot out-stack the app header with z-index
@@ -4299,7 +4300,6 @@ const ChatInputComponent: React.FC<ChatInputProps> = ({ onOpenSettings, scrollTo
             // session and won't re-reveal the (still focused) field on its own,
             // which left the composer parked behind the keyboard.
             requestAnimationFrame(() => {
-                const textarea = textareaRef.current;
                 if (textarea && document.activeElement === textarea) {
                     textarea.scrollIntoView({ block: 'nearest' });
                 }

packages/ui/src/components/chat/message/TextSelectionMenu.tsx

@@ -544,7 +544,7 @@ export const TextSelectionMenu: React.FC<TextSelectionMenuProps> = ({ containerR
     } finally {
       setIsAddingToNotes(false);
     }
-  }, [currentProjectRef, hideMenu, selectedText, selectedTextMarkdown, t]);
+  }, [currentProjectRef, currentSessionId, hideMenu, selectedText, selectedTextMarkdown, t]);
 
   if (!position.show) return null;