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## What changed Allow Unix workloads to acquire assertions directly from the SPIFFE Workload API for the existing OpenAI token exchange. Select this source with `OPENAI_IDENTITY_TOKEN_SOURCE=spiffe`, alongside `OPENAI_FEDERATION_RULE_ID`, `SPIFFE_ENDPOINT_SOCKET`, and `OPENAI_SPIFFE_AUDIENCE`. Optionally select an identity with `OPENAI_SPIFFE_ID`. Fetch a JWT-SVID over a Unix socket for each exchange, reconnecting on refresh and bounding acquisition to ten seconds. Reject ambiguous responses and mismatched subject or audience claims, and retain only the gRPC status code from agent errors. Signature and lifetime verification remain the token endpoint's responsibility. Keep file acquisition as the default, reject conflicting source settings, and exclude the new OpenAI-specific settings from model-launched environments. Document configuration and deployment constraints. ## Testing Add local-socket tests for token exchange and refresh after agent restart, concurrent refreshes, JWT-SVIDs without key IDs, identity selection, error redaction, and timeouts. Add configuration tests for explicit source selection, invalid or conflicting settings, unsupported platforms, and session consistency. GitOrigin-RevId: 9d88438ff41cd8f0b7356c512ec451455ed7c399