export declare const QUEUE_MAXSIZE = 500;
export interface TelemetryEvent {
    tool: string;
    success: boolean;
    duration_ms: number;
    error_category?: string;
    project_hash?: string;
}
/** fire-and-forget 入口。disabled / endpoint 空 → 立即 return（零开销）。 */
export declare function record(event: TelemetryEvent): void;
export declare function _resetForTest(): void;
export declare function _queueLengthForTest(): number;