export interface HandleFbRequestOptions {
    /** Absolute workspace root, or null/undefined when none is configured. */
    root: string | null | undefined;
    /** Whether the file browser is enabled for this agent. */
    enabled: boolean;
    requestId: string;
    action: string;
    relPath: string;
    content?: string;
    newPath?: string;
    query?: string;
    /** Send a frame back to the server (the caller's WS sendFrame). */
    sendFrame: (frame: Record<string, unknown>) => void;
    /** Optional logger (unused today, accepted for parity/future use). */
    log?: (m: string) => void;
}
/**
 * Handle a file-browser request from the server (originated by the browser UI).
 * Replies via `sendFrame({ type:'fb_response', requestId, ok, ...extra })`.
 */
export declare function handleFbRequest(opts: HandleFbRequestOptions): void;