chore: apply ruff auto-fixes and remove dead AST scripts

tests/test_live_workflow.py

@@ -46,12 +46,10 @@ def test_full_live_workflow(live_gui) -> None:
  client.set_value("ai_input", "Hello! This is an automated test. Just say 'Acknowledged'.")
  client.click("btn_gen_send")
  time.sleep(2) # Verify thinking indicator appears (might be brief)
- thinking_seen = False
  print("\nPolling for thinking indicator...")
  for i in range(40):
   state = client.get_indicator_state("thinking_indicator")
   if state.get('shown'):
-   thinking_seen = True
    print(f"Thinking indicator seen at poll {i}")
    break
   time.sleep(0.5)