/**
 * Weavetab — intelligence/vision.ts
 * Local pixel-analysis visual fallback — runs when CDP AX tree returns 0 elements.
 * No external APIs. No ML. Pure image analysis using sharp.
 * Weavetab by fy2ne
 */
import CDP from "chrome-remote-interface";
export interface ClickableZone {
    x: number;
    y: number;
    width: number;
    height: number;
}
export interface VisualFallback {
    page_state: "loading" | "blank" | "content" | "error_page";
    text_density: number;
    content_heatmap: string;
    clickable_zones: ClickableZone[];
}
/**
 * Capture a CDP screenshot, run local pixel analysis, and return
 * structured signal the agent can use when the AX tree is empty.
 */
export declare function analyzeVisualFallback(session: CDP.Client): Promise<VisualFallback>;