/**
 * Resource Service
 *
 * Collects system resources (RAM, GPU) with defensive timeouts.
 * Resource collection is OPTIONAL and must NEVER block core functionality.
 */
export interface GPUDevice {
    index: number;
    name: string;
    memoryUsed: number;
    memoryTotal: number;
    utilization?: number;
    temperature?: number;
}
export interface GPUInfo {
    vendor: 'nvidia' | 'amd';
    devices: GPUDevice[];
    totalUsed: number;
    totalMemory: number;
}
export interface RAMInfo {
    used: number;
    total: number;
    percent: number;
}
export interface ServerResources {
    hostname: string;
    ram: RAMInfo;
    gpus: GPUInfo | null;
    gpuError?: 'timeout' | 'not_found' | 'parse_error' | 'command_failed';
    collectedAt: number;
}
/**
 * Resource Service - Singleton
 *
 * Provides cached, non-blocking access to system resources.
 */
declare class ResourceService {
    private cache;
    private cacheTime;
    private collecting;
    private hostname;
    private hasLoggedOnce;
    constructor();
    /**
     * Get resources - NEVER blocks, returns cached or empty
     * Triggers async collection if cache is stale
     */
    getResources(): ServerResources;
    /**
     * Force refresh - waits for collection but still has timeout protection
     * Use sparingly (e.g., on explicit user request)
     */
    refreshResources(): Promise<ServerResources>;
    /**
     * Check if cached data is stale
     */
    isStale(): boolean;
    /**
     * Get empty resources (fallback)
     */
    private getEmptyResources;
    /**
     * Async collection - runs in background, updates cache
     */
    private collectAsync;
}
export declare function getResourceService(): ResourceService;
export { ResourceService };