feat(proxy): add xai upstream adapter for Grok via OAuth#28356
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Salvage of #28064 (@yannsunn).
Summary
Adds an
xaiupstream adapter tohermes proxy, backed by the existingxai-oauthcredential pool. External OpenAI-compatible clients can now route through Hermes's xAI OAuth credential without re-implementing PKCE refresh or token recovery.Changes
hermes_cli/proxy/adapters/xai.py(new): forwards/v1/responses,/v1/chat/completions,/v1/completions,/v1/embeddings,/v1/models. Usesload_pool('xai-oauth')somanual:xai_pkceentries fromhermes auth add xai-oauth --type oauthand singleton-seededloopback_pkceentries share the existing OAuth refresh behavior. 401 triggers one pool refresh/rotation attempt via the adapter retry hook.hermes_cli/proxy/adapters/__init__.py: registersxaialongsidenous_portal.hermes_cli/proxy/cli.py+hermes_cli/main.py:hermes proxy providersnow listsxai; auth hints updated.tests/hermes_cli/test_proxy.py: registry/metadata, pool-backed credential resolution, default base URL, 401 refresh retry behavior.Validation
scripts/run_tests.sh tests/hermes_cli/test_proxy.py -q→ 36/36 passing.Authorship preserved via cherry-pick. AUTHOR_MAP entry added in a follow-up commit.