/**
 * Progress UI - Lightweight SSE-based progress display
 *
 * Opens a browser window showing a progress bar + log.
 * Reusable for any long-running operation (global_init, bulk indexing, etc.)
 *
 * Uses Server-Sent Events (SSE) — simple, one-way, no WebSocket needed.
 */
export interface ProgressEvent {
    current: number;
    total: number;
    name: string;
    status: 'indexing' | 'done' | 'skipped' | 'error';
    detail?: string;
}
/**
 * Start the progress server and open browser
 */
export declare function startProgress(title: string): void;
/**
 * Send a progress event to all connected browsers
 */
export declare function sendProgress(event: ProgressEvent): void;
/**
 * Signal completion and close server after a short delay
 */
export declare function stopProgress(summary?: string): void;
/**
 * Check if progress server is running
 */
export declare function isProgressRunning(): boolean;
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