interface ProviderModelsData {
    models: Record<string, string[]>;
    connected: string[];
    updatedAt: string;
}
/**
 * Read connected provider IDs from disk cache (synchronous).
 * Returns `null` on first run when no cache file exists.
 */
export declare function readConnectedProviders(): string[] | null;
/** Write connected providers to disk (and update in-memory cache). */
export declare function writeConnectedProviders(connected: string[]): void;
/** Whether a cache file exists on disk. */
export declare function hasConnectedProvidersCache(): boolean;
/**
 * Read the per-provider model lists from disk cache (synchronous).
 * Returns `null` on first run.
 */
export declare function readProviderModels(): ProviderModelsData | null;
/** Write per-provider model lists to disk. */
export declare function writeProviderModels(data: {
    models: Record<string, string[]>;
    connected: string[];
}): void;
export declare function updateFromProviderList(client: {
    provider?: {
        list?: () => Promise<{
            data?: {
                connected?: string[];
                all?: Array<{
                    id: string;
                    models?: Record<string, unknown>;
                }>;
            };
        }>;
    };
}): Promise<void>;
/** Reset in-memory caches (for testing). */
export declare function resetConnectedProvidersCache(): void;
export {};