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

src/app_controller.py

@@ -707,6 +707,13 @@ class AppController:
    'manual_approve': 'ui_manual_approve'
   }
   
+  self._gettable_fields = dict(self._settable_fields)
+  self._gettable_fields.update({
+   'ui_focus_agent': 'ui_focus_agent',
+   'active_discussion': 'active_discussion',
+   '_track_discussion_active': '_track_discussion_active'
+  })
+  
   self.hook_server = api_hooks.HookServer(app if app else self)
   self.hook_server.start()
 
@@ -1004,6 +1011,15 @@ class AppController:
    """Returns the health status of the API."""
    return {"status": "ok"}
 
+  @api.get("/api/gui/state", dependencies=[Depends(get_api_key)])
+  def get_gui_state() -> dict[str, Any]:
+   """Returns the current GUI state for specific fields."""
+   gettable = getattr(self, "_gettable_fields", {})
+   state = {}
+   for key, attr in gettable.items():
+    state[key] = getattr(self, attr, None)
+   return state
+
   @api.get("/status", dependencies=[Depends(get_api_key)])
   def status() -> dict[str, Any]:
    """Returns the current status of the application."""