🤖 feat: Hide completed TODOs while streaming

Only show completed TODOs when chat is not streaming to reduce clutter
during active work. When streaming stops, completed todos reappear to
provide context on what was accomplished.

- Filter out completed todos in PinnedTodoList when canInterrupt is true
- Pass filtered todos to TodoList component

Author: ammar-agent

src/components/PinnedTodoList.tsx

@@ -47,7 +47,7 @@ export const PinnedTodoList: React.FC<PinnedTodoListProps> = ({ workspaceId }) =
         </span>
         TODO{expanded ? ":" : ""}
       </div>
-      {expanded && <TodoList todos={todos} />}
+      {expanded && <TodoList todos={displayTodos} />}
     </div>
   );
 };