Add queue response debug logging for node errors

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

handler.py

@@ -277,6 +277,14 @@ def queue_workflow(workflow: dict, client_id: str = None) -> str:
         raise Exception(f"Failed to queue workflow: {resp.text}")
 
     result = resp.json()
+
+    # Debug: print full queue response
+    print(f"Queue response keys: {result.keys()}")
+    if "node_errors" in result and result["node_errors"]:
+        print(f"Node errors: {result['node_errors']}")
+    if "error" in result:
+        print(f"Queue error: {result['error']}")
+
     return result["prompt_id"]