feat: add CLI Command Node and Prompt Node components for orchestrator

- Implemented CliCommandNode component for executing CLI tools with AI models.
- Implemented PromptNode component for constructing AI prompts with context.
- Added styling for mode and tool badges in both components.
- Enhanced user experience with command and argument previews, execution status, and error handling.

test: add comprehensive tests for ask_question tool

- Created direct test for ask_question tool execution.
- Developed end-to-end tests to validate ask_question tool integration with WebSocket and A2UI surfaces.
- Implemented simple and integrated WebSocket tests to ensure proper message handling and surface reception.
- Added tool registration test to verify ask_question tool is correctly registered.

chore: add WebSocket listener and simulation tests

- Added WebSocket listener for A2UI surfaces to facilitate testing.
- Implemented frontend simulation test to validate complete flow from backend to frontend.
- Created various test scripts to ensure robust testing of ask_question tool functionality.

ccw/frontend/src/components/issue/queue/QueueActions.tsx

@@ -69,8 +69,9 @@ export function QueueActions({
   const [mergeTargetId, setMergeTargetId] = useState('');
   const [selectedItemIds, setSelectedItemIds] = useState<string[]>([]);
 
-  // Get queue ID - IssueQueue interface doesn't have an id field, using tasks array as key
-  const queueId = (queue.tasks?.join(',') || queue.solutions?.join(',') || 'default');
+  // Use "current" as the queue ID for single-queue model
+  // This matches the API pattern where deactivate works on the current queue
+  const queueId = 'current';
 
   // Get all items from grouped_items for split dialog
   const allItems: QueueItem[] = Object.values(queue.grouped_items || {}).flat();