/**
 * A synchronous "is there a credential at all" probe for startup-time selection.
 *
 * WHY SYNCHRONOUS, AND WHY SO SMALL. `createSummarizerFromEnv()` runs on the MCP server's startup
 * path, where the surrounding code cannot await usefully and the cost of getting this wrong is a
 * server that does not boot. The asynchronous credential store is the source of truth everywhere
 * else; this only decides whether the OrcaRouter summarizer is a candidate, and it answers from the
 * environment and a single small file.
 *
 * It never returns the key. A boolean is all a selector needs, and a function that returned the
 * secret would eventually be called from somewhere that logs.
 */
/**
 * Is an OrcaRouter credential available?
 *
 * Reads the environment first, then the store's presence and shape. A store that exists but holds
 * only credentials awaiting reauthentication answers false, because selecting a summarizer that is
 * guaranteed to 401 turns a working truncating fallback into a failing network call.
 */
export declare function hasOrcaRouterCredential(env?: NodeJS.ProcessEnv): boolean;
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