`SdkInferencePort` runs one Claude Agent SDK query per round through a Node
sidecar and returns it as one `InferenceOutput`. It prepares through the
same `prepare_invocation` the connector port uses, so there is one identity
scheme and every `integrity_is_valid` variant is unchanged.
The sidecar computes no tool result. Every call is answered by
`ToolResultOracle`, which is the lane's own evaluator fold replayed over the
calls made so far — the same function that will recompute the string at
re-derivation. A lane lends its oracle keyed by the prepared request id
immediately before `infer`; the connector port ignores the lend.
Rust owns the transcript lowering, the receipt digest, and the fault
disposition. The sidecar names a closed set of reasons and cannot assert an
integrity violation, a request identity, or a tool result.
`open_inference` routes each configured model: a `GHOSTLIGHT_SDK_MODEL_PREFIX`
model reaches the SDK port, anything else the connector, and a model no
built backend claims fails at open rather than at its first tick. Ghostlight
reads no credential for this transport.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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