feat(gui): implement Phases 2-5 of Comprehensive GUI UX track

- Add cost tracking with new cost_tracker.py module
- Enhance Track Proposal modal with editable titles and goals
- Add Conductor Setup summary and New Track creation form to MMA Dashboard
- Implement Task DAG editing (add/delete tickets) and track-scoped discussion
- Add visual polish: color-coded statuses, tinted progress bars, and node indicators
- Support live worker streaming from AI providers to GUI panels
- Fix numerous integration test regressions and stabilize headless service

tests/test_gemini_cli_edge_cases.py

@@ -135,12 +135,13 @@ def test_gemini_cli_loop_termination(live_gui: Any) -> None:
     approved = True
   if approved: break
   time.sleep(0.5)
-  # Wait for the second round and final answer
+ # Wait for the second round and final answer
  found_final = False
  start_time = time.time()
- while time.time() - start_time < 15:
+ while time.time() - start_time < 30:
   session = client.get_session()
   entries = session.get("session", {}).get("entries", [])
+  print(f"DEBUG: Session entries: {[e.get('content', '')[:30] for e in entries]}")
   for e in entries:
    if "processed the tool results" in e.get("content", ""):
     found_final = True