/**
 * Safe failure shaping shared by SDK transports and reconciliation stores.
 * Provider error text is retained only in the local diagnostic log; wire and
 * persisted reconciliation details expose a fixed redacted message.
 */
export declare const PROMPT_FAILURE_CODE_MAX = 64;
/** Safe-token code capped at 64; arbitrary failure text is never retained. */
export declare function sanitizePromptFailure(error: unknown): {
    code: string;
    message: string;
};
/** Best-effort local diagnostic text that never crosses the SDK boundary. */
export declare function formatPromptFailureForLocalLog(error: unknown): string;