export declare const REMOTE_DELIVERY_MESSAGE = "codex-remote-delivery";
export declare const REMOTE_DELIVERY_RECEIVER = "_pi_remote_delivery";
export declare function isEncryptedFunctionOutput(item: unknown): item is Record<string, unknown> & {
    type: "function_call_output";
    output: unknown[];
};
export declare function isOriginalExecCall(item: unknown): item is Record<string, unknown> & {
    type: "custom_tool_call";
    name: "exec";
};
/** Protected pairs must be rejected before generic history repair can erase evidence. */
export declare function assertRemoteDeliveryPairs(input: readonly unknown[]): number;