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

api_hook_client.py

@@ -28,7 +28,7 @@ class ApiHookClient:
   headers = {'Content-Type': 'application/json'}
   last_exception = None
   # Increase default request timeout for local server
-  req_timeout = timeout if timeout is not None else 2.0 
+  req_timeout = timeout if timeout is not None else 10.0
   for attempt in range(self.max_retries + 1):
    try:
     if method == 'GET':