export declare function requireCredential(extra?: string): void;
/**
 * POST `/api/relic/<path>` and return the unwrapped `data`. `isShape` guards the
 * envelope so a proxy HTML page or a changed contract fails loudly, not as NaN.
 */
export declare function relicPost<T>(path: string, label: string, body: unknown, isShape: (d: unknown) => d is T): Promise<T>;
/** Parse a `@file` JSON-array argument or return null when the arg is inline. */
export declare function readJsonArrayArg(arg: string, what: string): unknown[] | null;
/** Validate caller-owned correlation metadata before copying it into a result. */
export declare function opaqueIdentity(value: unknown, label?: string): string | undefined;
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