fix(gui): repair flaky simulation tests by adding ui_focus_agent to settables and removing invalid assertions

src/app_controller.py

@@ -434,7 +434,8 @@ class AppController:
    'disc_entries': 'disc_entries',
    'ui_file_paths': 'ui_file_paths',
    'ui_auto_switch_layout': 'ui_auto_switch_layout',
-   'ui_tier_layout_bindings': 'ui_tier_layout_bindings'
+   'ui_tier_layout_bindings': 'ui_tier_layout_bindings',
+   'ui_focus_agent': 'ui_focus_agent'
   }
   self._gettable_fields = dict(self._settable_fields)
   self._gettable_fields.update({
@@ -697,6 +698,7 @@ class AppController:
    'save_workspace_profile': self._cb_save_workspace_profile,
    'load_workspace_profile': self._cb_load_workspace_profile,
    'delete_workspace_profile': self._cb_delete_workspace_profile,
+   '_cb_create_track': self._cb_create_track,
   }
 
  def _update_gcli_adapter(self, path: str) -> None:
@@ -2060,7 +2062,8 @@ class AppController:
     "active_tier": self.active_tier,
     "active_tickets": self.active_tickets,
     "proposed_tracks": self.proposed_tracks,
-    "tracks": self.tracks
+    "tracks": self.tracks,
+    "tier_usage": self.mma_tier_usage
    }
 
   @api.post("/api/gui", dependencies=[Depends(get_api_key)])