/**
 * Minimal LLM provider shim — env-keyed, injectable for tests.
 */
export interface LlmProvider {
    isAvailable(): boolean;
    complete(prompt: string): Promise<string>;
}
/** Test hook — inject a fake provider (null restores default). */
export declare function setLlmProvider(provider: LlmProvider | null): void;
export declare function isLlmAvailable(): boolean;
export declare function complete(prompt: string): Promise<string>;