/**
 * Stack tree visualization — rich ASCII art rendering for terminal output.
 *
 * Features:
 *   - Clickable PR links (OSC 8 in supported terminals)
 *   - Color-coded size indicators
 *   - CI and review status badges
 *   - Summary line with counts
 */
import type { Stack } from '../core/stack.js';
/**
 * Render a stack as a visual tree in the terminal.
 */
export declare function renderStackTree(stack: Stack): string;
/**
 * Render a compact one-line-per-entry summary.
 */
export declare function renderCompactStack(stack: Stack): string;
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