import { type SanitizedContextForkMode } from "./sanitized-context-fork.ts";
export interface WorkerContextModelIdentity {
    provider: string;
    model: string;
}
export interface ResolveWorkerContextInheritanceModeInput {
    parent: WorkerContextModelIdentity;
    worker: WorkerContextModelIdentity;
    /** Eventual `fork_turns` wire value. Omission is policy-significant. */
    mode?: string;
}
/**
 * Pure provider/model egress policy for sanitized birth context. Omitted mode never inherits.
 * Explicit inheritance is allowed only when both identities match exactly; crossing either
 * boundary requires an explicit none if a mode was supplied.
 */
export declare function resolveWorkerContextInheritanceMode(input: ResolveWorkerContextInheritanceModeInput): SanitizedContextForkMode;
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