test(sim): Setup framework for robust live sim verification

api_hook_client.py

@@ -162,6 +162,26 @@ class ApiHookClient:
             pass
         return None
 
+    def get_text_value(self, item_tag):
+        """Wraps get_value and returns its string representation, or None."""
+        val = self.get_value(item_tag)
+        return str(val) if val is not None else None
+
+    def get_node_status(self, node_tag):
+        """Wraps get_value for a DAG node or queries the diagnostic endpoint for its status."""
+        val = self.get_value(node_tag)
+        if val is not None:
+            return val
+        try:
+            diag = self._make_request('GET', '/api/gui/diagnostics')
+            if 'nodes' in diag and node_tag in diag['nodes']:
+                return diag['nodes'][node_tag]
+            if node_tag in diag:
+                return diag[node_tag]
+        except Exception:
+            pass
+        return None
+
     def click(self, item, *args, **kwargs):
         """Simulates a click on a GUI button or item."""
         user_data = kwargs.pop('user_data', None)