/** The parent passes the pinned `provider/id` here; only the worker sets it. */
export declare const MODEL_PIN_ENV = "PI_FABRIC_MODEL_PIN";
/** Exit status of a child that stopped itself because the model was not the pin. */
export declare const MODEL_PIN_EXIT_CODE = 71;
/** Prefix of the single stderr line that names the violation for the worker. */
export declare const MODEL_PIN_MARKER = "[pi-fabric] model-pin-violation ";
export interface ModelPinViolation {
    pinned: string;
    /** `provider/id` of the model that was about to run, `payload model "<id>"` for a rewritten request, or "none". */
    actual: string;
}
/**
 * Whether a run ended on a pin violation. Such a run is never retried or resumed,
 * whatever else its error text says: a model id can spell `missing credentials`.
 * Decided from the child's exit status and the fixed prefix, not from free text.
 */
export declare const isModelPinFailure: (record: {
    exitCode?: number | null;
    error?: string;
}) => boolean;
/** Fixed run error; the worker builds it from the stderr marker. */
export declare const modelPinFailure: (violation: ModelPinViolation) => string;
/** Parse the marker line out of a child's stderr; undefined when absent or malformed. */
export declare const parseModelPinViolation: (stderr: string) => ModelPinViolation | undefined;
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