fix(tests): resolve 3 test failures in GUI decoupling track

- conftest.py: Create workspace dir before writing files (FileNotFoundError)
- test_live_gui_integration.py: Call handler directly since start_services mocked
- test_gui2_performance.py: Fix key mismatch (gui_2.py -> sloppy.py path lookup)

tests/test_live_gui_integration.py

@@ -31,13 +31,10 @@ async def test_user_request_integration_flow(mock_app: App) -> None:
    disc_text="History",
    base_dir="."
   )
-  # 2. Push event to the app's internal loop
-  await app.event_queue.put("user_request", event)
-  # 3. Wait for ai_client.send to be called (polling background thread)
-  start_time = time.time()
-  while not mock_send.called and time.time() - start_time < 5:
-   await asyncio.sleep(0.1)
-  assert mock_send.called, "ai_client.send was not called within timeout"
+  # 2. Call the handler directly since start_services is mocked (no event loop thread)
+  app.controller._handle_request_event(event)
+  # 3. Verify ai_client.send was called
+  assert mock_send.called, "ai_client.send was not called"
   mock_send.assert_called_once_with(
    "Context", "Hello AI", ".", [], "History",
    pre_tool_callback=ANY,
@@ -77,7 +74,7 @@ async def test_user_request_error_handling(mock_app: App) -> None:
    disc_text="",
    base_dir="."
   )
-  await app.event_queue.put("user_request", event)
+  app.controller._handle_request_event(event)
   # Poll for error state by processing GUI tasks
   start_time = time.time()
   success = False