feat: add dark-theme HTML leaderboard template

Also fix render_html to serialize YAML-parsed date objects (default=str),
with a regression test.

scripts/generate_leaderboard.py

@@ -124,7 +124,8 @@ def render_html(entries: list[dict], template_path: str, generated: str) -> str:
     if "__DATA__" not in template:
         raise ValueError(f"Template {template_path} missing __DATA__ placeholder")
     payload = {"entries": entries, "generated": generated}
-    json_str = json.dumps(payload, ensure_ascii=False)
+    # default=str so YAML-parsed dates (datetime.date) and similar serialize cleanly.
+    json_str = json.dumps(payload, ensure_ascii=False, default=str)
     json_str = json_str.replace("</", "<\\/")  # don't break out of <script>
     return template.replace("__DATA__", json_str)
 

scripts/leaderboard_template.html

@@ -0,0 +1,158 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>JEE / NEET LLM Benchmark Leaderboard</title>
+<style>
+:root{--bg:#0d1117;--panel:#161b22;--border:#30363d;--text:#e6edf3;--muted:#8b949e;--accent:#58a6ff;--open:#3fb950;--closed:#f85149;}
+*{box-sizing:border-box;}
+body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;}
+.wrap{max-width:1000px;margin:0 auto;padding:32px 20px;}
+header h1{margin:0 0 4px;font-size:26px;}
+header p{margin:0;color:var(--muted);}
+.controls{display:flex;gap:12px;margin:24px 0 8px;flex-wrap:wrap;align-items:center;}
+label{font-size:13px;color:var(--muted);}
+select{background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:6px 10px;font-size:14px;margin-left:4px;}
+table{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--border);border-radius:8px;overflow:hidden;}
+th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);}
+th{cursor:pointer;user-select:none;font-size:13px;color:var(--muted);white-space:nowrap;}
+th.num,td.num{text-align:right;}
+tr:last-child td{border-bottom:none;}
+tbody tr:hover{background:#1c2128;}
+.badge{font-size:11px;padding:1px 6px;border-radius:10px;margin-left:6px;vertical-align:middle;}
+.badge.open{background:rgba(63,185,80,.15);color:var(--open);}
+.badge.closed{background:rgba(248,81,73,.15);color:var(--closed);}
+.lab{color:var(--muted);font-size:12px;margin-left:6px;}
+.sup{color:var(--accent);font-size:11px;vertical-align:super;margin-left:2px;}
+.footnotes{margin-top:14px;color:var(--muted);font-size:13px;}
+.footnotes div{margin:2px 0;}
+.caveat{margin-top:12px;padding:10px 12px;background:rgba(210,153,34,.12);border:1px solid rgba(210,153,34,.4);border-radius:6px;color:#d29922;font-size:13px;}
+footer{margin-top:24px;color:var(--muted);font-size:12px;}
+a{color:var(--accent);}
+</style>
+</head>
+<body>
+<div class="wrap">
+<header>
+<h1>JEE / NEET LLM Benchmark</h1>
+<p>Vision LLMs on India's hardest competitive exams</p>
+</header>
+<div class="controls">
+<label>Exam<select id="exam"></select></label>
+<label>Year<select id="year"></select></label>
+<span id="updated" style="color:var(--muted);font-size:13px;margin-left:auto;"></span>
+</div>
+<table>
+<thead><tr>
+<th data-k="rank" class="num">#</th>
+<th data-k="model">Model</th>
+<th data-k="score" class="num">Score</th>
+<th data-k="pct" class="num">%</th>
+<th data-k="correct" class="num">Correct</th>
+<th data-k="partial" class="num">Partial</th>
+<th data-k="incorrect" class="num">Incorrect</th>
+<th data-k="skipped" class="num">Skipped</th>
+<th data-k="failures" class="num">Fail</th>
+</tr></thead>
+<tbody id="rows"></tbody>
+</table>
+<div id="caveat"></div>
+<div class="footnotes" id="footnotes"></div>
+<footer>Data: <a href="https://huggingface.co/datasets/Reja1/jee-neet-benchmark">Reja1/jee-neet-benchmark</a> · <a href="https://x.com/RejaullahmdMd">@RejaullahmdMd</a></footer>
+</div>
+<script id="data" type="application/json">__DATA__</script>
+<script>
+const DATA = JSON.parse(document.getElementById('data').textContent);
+const entries = DATA.entries;
+document.getElementById('updated').textContent = 'updated ' + DATA.generated;
+
+function pct(e){ return (e.max_score && e.max_score > 0) ? (e.score / e.max_score * 100) : null; }
+function examLabel(x){ return x.replace('JEE_ADVANCED','JEE Advanced').replace('JEE_MAIN','JEE Main').replace('_',' '); }
+
+const exams = [...new Set(entries.map(e => e.exam))].sort();
+let state = {exam:'JEE_ADVANCED', year:'2026', sort:'score', dir:-1};
+if(!exams.includes(state.exam)) state.exam = exams[0];
+
+const examSel = document.getElementById('exam');
+const yearSel = document.getElementById('year');
+
+function fillExams(){
+  examSel.innerHTML = '';
+  exams.forEach(x => { const o = document.createElement('option'); o.value = x; o.textContent = examLabel(x); if(x === state.exam) o.selected = true; examSel.appendChild(o); });
+}
+function fillYears(){
+  const years = [...new Set(entries.filter(e => e.exam === state.exam).map(e => String(e.year)))].sort().reverse();
+  if(!years.includes(state.year)) state.year = years[0];
+  yearSel.innerHTML = '';
+  years.forEach(y => { const o = document.createElement('option'); o.value = y; o.textContent = y; if(y === state.year) o.selected = true; yearSel.appendChild(o); });
+}
+
+function render(){
+  let rows = entries.filter(e => e.exam === state.exam && String(e.year) === String(state.year));
+  rows.sort((a,b) => {
+    if(state.sort === 'model') return state.dir * a.model.localeCompare(b.model);
+    let va = state.sort === 'pct' ? (pct(a) ?? -1) : (a[state.sort] ?? 0);
+    let vb = state.sort === 'pct' ? (pct(b) ?? -1) : (b[state.sort] ?? 0);
+    return state.dir * (va - vb);
+  });
+
+  const fn = []; const fnIndex = {};
+  function notesFor(e){
+    const m = e.meta || {}; const notes = [];
+    if(m.contamination === 'suspect') notes.push('released after exam — contamination not ruled out');
+    if(m.quant) notes.push('served at ' + m.quant + ' precision');
+    return notes;
+  }
+
+  const tbody = document.getElementById('rows'); tbody.innerHTML = '';
+  let rank = 0, shown = 0, prevScore = null;
+  rows.forEach(e => {
+    shown++;
+    if(e.score !== prevScore){ rank = shown; prevScore = e.score; }
+    const m = e.meta || {};
+    const p = pct(e);
+    const sups = notesFor(e).map(n => { if(!(n in fnIndex)){ fn.push(n); fnIndex[n] = fn.length; } return fnIndex[n]; });
+    const badge = (m.open_weight === true) ? '<span class="badge open">open</span>'
+                : (m.open_weight === false) ? '<span class="badge closed">closed</span>' : '';
+    const lab = m.lab ? '<span class="lab">' + m.lab + '</span>' : '';
+    const title = [m.license && ('License: ' + m.license), m.release_date && ('Released: ' + m.release_date), m.provider_pinned && ('Provider: ' + m.provider_pinned)].filter(Boolean).join(' · ');
+    const sup = sups.length ? '<span class="sup">' + sups.join(',') + '</span>' : '';
+    const tr = document.createElement('tr');
+    tr.innerHTML =
+      '<td class="num">' + rank + '</td>' +
+      '<td title="' + title.replace(/"/g,'&quot;') + '">' + e.model + badge + lab + sup + '</td>' +
+      '<td class="num">' + e.score + (e.max_score ? (' / ' + e.max_score) : '') + '</td>' +
+      '<td class="num">' + (p !== null ? p.toFixed(1) : '?') + '</td>' +
+      '<td class="num">' + e.correct + '</td>' +
+      '<td class="num">' + e.partial + '</td>' +
+      '<td class="num">' + e.incorrect + '</td>' +
+      '<td class="num">' + e.skipped + '</td>' +
+      '<td class="num">' + e.failures + '</td>';
+    tbody.appendChild(tr);
+  });
+
+  let html = '<div>🟢 <span style="color:var(--open)">open</span> = open weights · 🔒 <span style="color:var(--closed)">closed</span></div>';
+  fn.forEach((n,i) => { html += '<div><span class="sup">' + (i+1) + '</span> ' + n + '</div>'; });
+  document.getElementById('footnotes').innerHTML = html;
+
+  const cav = document.getElementById('caveat');
+  cav.innerHTML = (state.exam === 'JEE_ADVANCED' && String(state.year) === '2025')
+    ? '<div class="caveat">Note: JEE Advanced 2025 was scored under an earlier marking scheme and was not rescored — scores here mix schemes.</div>'
+    : '';
+}
+
+examSel.addEventListener('change', () => { state.exam = examSel.value; fillYears(); render(); });
+yearSel.addEventListener('change', () => { state.year = yearSel.value; render(); });
+document.querySelectorAll('th').forEach(th => {
+  th.addEventListener('click', () => {
+    const k = th.dataset.k; if(k === 'rank') return;
+    if(state.sort === k){ state.dir *= -1; } else { state.sort = k; state.dir = (k === 'model') ? 1 : -1; }
+    render();
+  });
+});
+
+fillExams(); fillYears(); render();
+</script>
+</body>
+</html>

tests/test_leaderboard_html.py

@@ -46,3 +46,17 @@ def test_render_html_missing_placeholder_raises(tmp_path):
     template.write_text("<html>no placeholder</html>")
     with pytest.raises(ValueError):
         gl.render_html([], str(template), "2026-06-20")
+
+
+def test_render_html_serializes_yaml_date_objects(tmp_path):
+    # PyYAML parses unquoted ISO dates into datetime.date, which json can't
+    # serialize natively. render_html must handle it.
+    import datetime
+
+    template = tmp_path / "t.html"
+    template.write_text('<script id="data">__DATA__</script>')
+    entries = [{"model": "a/b", "meta": {"release_date": datetime.date(2025, 9, 22)}}]
+    out = gl.render_html(entries, str(template), "2026-06-20")
+    start = out.index(">") + 1
+    payload = json.loads(out[start:out.index("</script>")])
+    assert payload["entries"][0]["meta"]["release_date"] == "2025-09-22"