"""Render an eval report dict as a short Markdown summary."""

from __future__ import annotations


def to_markdown(report: dict) -> str:
    s = report["summary"]
    lines = [
        "# veil-pgd eval report",
        "",
        f"- images: {s['n']}",
        f"- mean distance-to-truth: {s['mean_distance']:.3f}",
        f"- stealth pass rate: {s['stealth_pass_rate']:.1%}",
        "",
        "## poison success rate (fraction with distance >= tau)",
    ]
    for tau, rate in s["poison_success_rate"].items():
        lines.append(f"- tau={tau}: {rate:.1%}")
    return "\n".join(lines)