A ReasoningState item carries each provider block as raw bytes. The service
decides what is foreign: foreign state after the last user text is refused,
earlier foreign state is dropped before the backend and counted on the
receipt. Backends receive a ProviderCall that holds only what they may see,
and the service fills and checks the receipt's provider tag and drop count;
a refused result reaches the caller as a typed Provider failure, releases
its slot and replays on retry. transcript_items turns a completed result
into transcript items from the receipt, so callers never branch on provider.
Spec eureka-body:cut_spec:cut-connector-reasoning-item.r1; reports h1-h2;
Soul s2 holds (verdict eureka-body:verdict:cut-connector-reasoning-item.s2).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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