* feat(api-server): X-Hermes-Session-Key header for long-term memory scoping
API Server integrations (Open WebUI, custom web UIs) can now pass a stable
per-channel identifier via X-Hermes-Session-Key that scopes long-term memory
(Honcho, etc.) independently of the transcript-scoped X-Hermes-Session-Id.
This matches the native gateway's session_key / session_id split: one stable
key per assistant channel, many independent transcripts that rotate on /new.
- _create_agent and _run_agent accept gateway_session_key and pass it to
AIAgent(gateway_session_key=...), which is already honored by the Honcho
memory provider (plugins/memory/honcho/client.py resolve_session_name).
- New shared helper _parse_session_key_header applies the same API-key
gate, control-character sanitization, and a 256-char length cap as the
existing session-id header.
- All three agent endpoints honor the header: /v1/chat/completions,
/v1/responses, /v1/runs. JSON and SSE responses echo it back.
- /v1/capabilities advertises session_key_header so clients can
feature-detect.
Closes#20060.
Co-authored-by: Andy Stewart <lazycat.manatee@gmail.com>
* chore: AUTHOR_MAP entry for manateelazycat
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Co-authored-by: Andy Stewart <lazycat.manatee@gmail.com>
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