Summary

Hermes can log this warning during auxiliary title generation:

Auxiliary title generation failed: 'NoneType' object is not iterable

Cause

_CodexCompletionsAdapter.create() iterates final.output from the Codex Responses stream. Some final responses can have output set to None. In that case, getattr(final, "output", []) still returns None, and iterating it raises TypeError.

Expected behavior

Treat missing or None final output as an empty list, and continue using any streamed output that was already collected.

Local fix

Local commit 58444dd99 normalizes final is None and final.output is None, then adds regression tests covering streamed text with None final output and empty None final output.

Verification

venv/bin/python -m pytest tests/agent/test_auxiliary_client.py
174 passed, 1 warning