hermes-agent v0.21 removed agent.anthropic_adapter.normalize_anthropic_response and the AIAgent._normalize_codex_response method; the sanctioned out-of-band contract is now agent._get_transport(<mode>).normalize_response(...) returning NormalizedResponse (.content). Port the anthropic_messages and codex_responses branches of generate_title_raw_via_agent (api/streaming.py) and _agent_text_completion (api/routes.py); on agent v0.21 those branches currently die on import/attribute errors and silently fall back, degrading title generation and handoff summaries. build_anthropic_kwargs, _anthropic_messages_create, and _run_codex_stream are unchanged in v0.21 and stay as-is.