/** Shared install progress events for CloakBrowser and Playwright Chromium. */
export type BrowserInstallPhase = 'starting' | 'downloading' | 'verifying' | 'extracting' | 'running' | 'ready';
export type BrowserInstallProgress = {
    phase: BrowserInstallPhase;
    message?: string;
    percent?: number | null;
    bytesReceived?: number;
    totalBytes?: number | null;
    /** Raw subprocess output line (Playwright install). */
    line?: string;
    source?: 'stdout' | 'stderr';
};