feat(api): Add /api/gui/state endpoint and live_gui integration tests

src/api_hook_client.py

@@ -84,6 +84,11 @@ class ApiHookClient:
   """Retrieves current MMA status (track, tickets, tier, etc.)"""
   return self._make_request('GET', '/api/gui/mma_status')
 
+ def get_gui_state(self) -> dict | None:
+  """Retrieves the current GUI state via /api/gui/state."""
+  resp = self._make_request("GET", "/api/gui/state")
+  return resp if resp else None
+
  def push_event(self, event_type: str, payload: dict[str, Any]) -> dict[str, Any] | None:
   """Pushes an event to the GUI's AsyncEventQueue via the /api/gui endpoint."""
   return self.post_gui({