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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Stack Doctor — Incident War Room</title>
<link rel="preconnect" href="https://fonts.googleapis.com">
<link href="https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@300;400;500;600&family=Outfit:wght@300;400;500;600;700&display=swap" rel="stylesheet">
<style>
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg-abyss: #060a11;
  --bg-deep: #0a0f1a;
  --bg-mid: #0f1623;
  --bg-surface: #151d2e;
  --bg-elevated: #1a2438;
  --border-subtle: rgba(100, 180, 255, 0.08);
  --border-active: rgba(0, 196, 255, 0.25);
  --cyan: #00c4ff;
  --cyan-bright: #40d4ff;
  --cyan-dim: rgba(0, 196, 255, 0.15);
  --cyan-glow: rgba(0, 196, 255, 0.4);
  --amber: #f0a030;
  --amber-dim: rgba(240, 160, 48, 0.15);
  --amber-glow: rgba(240, 160, 48, 0.4);
  --emerald: #00e676;
  --emerald-dim: rgba(0, 230, 118, 0.12);
  --emerald-glow: rgba(0, 230, 118, 0.35);
  --coral: #ff3d5a;
  --coral-dim: rgba(255, 61, 90, 0.12);
  --text-primary: #d8e0ec;
  --text-secondary: rgba(216, 224, 236, 0.55);
  --text-tertiary: rgba(216, 224, 236, 0.3);
  --font-display: 'Outfit', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', monospace;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-slow: 800ms;
  --duration-med: 400ms;
  --duration-fast: 200ms;
}

html { height: 100%; }
body {
  min-height: 100%;
  background: var(--bg-abyss);
  color: var(--text-primary);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
  overflow-y: auto;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 80%, rgba(0, 100, 180, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(0, 160, 255, 0.04) 0%, transparent 60%);
  pointer-events: none; z-index: 0;
}

.grid-overlay {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(100, 180, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(100, 180, 255, 0.015) 1px, transparent 1px);
  background-size: 60px 60px;
}

.app {
  position: relative; z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 24px 40px;
  display: flex; flex-direction: column; gap: 16px;
}

/* ══════════ HEADER ══════════ */
.header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  background: linear-gradient(135deg, var(--bg-mid), var(--bg-surface));
  border: 1px solid var(--border-subtle); border-radius: 14px;
}
.header-left { display: flex; align-items: center; gap: 14px; }
.logo-mark {
  width: 36px; height: 36px; border-radius: 9px;
  background: linear-gradient(135deg, var(--cyan), rgba(0, 196, 255, 0.5));
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 24px var(--cyan-dim);
  animation: logoPulse 4s ease-in-out infinite;
}
.logo-mark svg { width: 20px; height: 20px; }
@keyframes logoPulse { 0%,100% { box-shadow: 0 0 20px var(--cyan-dim); } 50% { box-shadow: 0 0 36px var(--cyan-glow); } }
.header-title { font-weight: 600; font-size: 16px; letter-spacing: 0.5px; }
.header-subtitle { font-family: var(--font-mono); font-size: 11px; font-weight: 300; color: var(--text-secondary); }
.header-right { display: flex; align-items: center; gap: 20px; }
.header-meta-label { font-family: var(--font-mono); font-size: 9px; font-weight: 500; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-tertiary); }
.header-meta-value { font-family: var(--font-mono); font-size: 12px; color: var(--cyan); }
.status-badge {
  font-family: var(--font-mono); font-size: 10px; font-weight: 500;
  letter-spacing: 1px; text-transform: uppercase;
  padding: 5px 14px; border-radius: 20px;
  background: var(--cyan-dim); color: var(--cyan);
  border: 1px solid rgba(0, 196, 255, 0.2);
  transition: all var(--duration-slow) var(--ease-out-expo);
}
.status-badge.warning { background: var(--amber-dim); color: var(--amber); border-color: rgba(240, 160, 48, 0.3); }
.status-badge.success { background: var(--emerald-dim); color: var(--emerald); border-color: rgba(0, 230, 118, 0.3); }
.status-badge.error { background: var(--coral-dim); color: var(--coral); border-color: rgba(255, 61, 90, 0.3); }

/* ══════════ SECTION TITLES ══════════ */
.section-title {
  font-family: var(--font-mono); font-size: 10px; font-weight: 500;
  letter-spacing: 2px; text-transform: uppercase; color: var(--text-tertiary);
  padding: 8px 0 0;
  display: flex; align-items: center; gap: 10px;
}
.section-title::after { content: ''; flex: 1; height: 1px; background: var(--border-subtle); }

/* ══════════ TRAINING CHART ══════════ */
.chart-section {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.chart-panel {
  background: linear-gradient(180deg, rgba(15, 22, 35, 0.85), rgba(10, 15, 26, 0.95));
  border: 1px solid var(--border-subtle); border-radius: 14px;
  padding: 24px 28px; position: relative; overflow: hidden;
}
.chart-panel-title {
  font-family: var(--font-mono); font-size: 10px; font-weight: 500;
  letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-secondary);
  margin-bottom: 4px;
}
.chart-panel-subtitle {
  font-size: 13px; font-weight: 300; color: var(--text-tertiary);
  margin-bottom: 16px;
}
.chart-canvas-wrap {
  position: relative; width: 100%; height: 280px;
}
canvas { width: 100% !important; height: 100% !important; }

.chart-stat-row {
  display: flex; gap: 20px; margin-top: 16px; padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}
.chart-stat { display: flex; flex-direction: column; gap: 2px; }
.chart-stat-label { font-family: var(--font-mono); font-size: 9px; font-weight: 500; letter-spacing: 1px; text-transform: uppercase; color: var(--text-tertiary); }
.chart-stat-value { font-family: var(--font-mono); font-size: 18px; font-weight: 300; }
.chart-stat-value.emerald { color: var(--emerald); }
.chart-stat-value.coral { color: var(--coral); }
.chart-stat-value.cyan { color: var(--cyan); }
.chart-stat-value.amber { color: var(--amber); }

/* ══════════ ANNOTATION BADGES ══════════ */
.annotation {
  position: absolute; font-family: var(--font-mono); font-size: 9px;
  font-weight: 500; letter-spacing: 0.5px; padding: 3px 8px;
  border-radius: 4px; pointer-events: none; white-space: nowrap;
}

/* ══════════ WAR ROOM GRID ══════════ */
.warroom { display: grid; grid-template-columns: 220px 1fr 260px; gap: 14px; }

.panel {
  background: linear-gradient(180deg, rgba(15, 22, 35, 0.85), rgba(10, 15, 26, 0.95));
  border: 1px solid var(--border-subtle); border-radius: 14px; overflow: hidden;
}
.panel-header {
  padding: 12px 16px 8px; display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--border-subtle);
}
.panel-header-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan); box-shadow: 0 0 8px var(--cyan-glow);
  animation: dotPulse 3s ease-in-out infinite;
}
@keyframes dotPulse { 0%,100% { opacity: 0.6; } 50% { opacity: 1; } }
.panel-header-title { font-family: var(--font-mono); font-size: 10px; font-weight: 500; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-secondary); }

/* ══════════ ARCHITECTURE DIAGRAM ══════════ */
.arch-body {
  display: flex; flex-direction: column; align-items: center;
  padding: 16px 14px; gap: 0;
}
.arch-layer {
  width: 100%; padding: 12px;
  background: var(--bg-deep); border: 1px solid var(--border-subtle); border-radius: 8px;
  transition: all var(--duration-slow) var(--ease-out-expo);
}
.arch-layer .layer-name { font-family: var(--font-mono); font-size: 10px; font-weight: 500; letter-spacing: 1.2px; text-transform: uppercase; color: var(--text-secondary); transition: color var(--duration-slow); }
.arch-layer .layer-detail { font-family: var(--font-mono); font-size: 9px; font-weight: 300; color: var(--text-tertiary); margin-top: 2px; }
.arch-layer.scanning { border-color: rgba(0, 196, 255, 0.3); background: linear-gradient(135deg, rgba(0, 196, 255, 0.06), var(--bg-deep)); box-shadow: 0 0 20px var(--cyan-dim); }
.arch-layer.scanning .layer-name { color: var(--cyan); }
.arch-layer.identified { border-color: rgba(240, 160, 48, 0.4); background: linear-gradient(135deg, rgba(240, 160, 48, 0.08), var(--bg-deep)); box-shadow: 0 0 25px var(--amber-dim); animation: identPulse 2s ease-in-out infinite; }
.arch-layer.identified .layer-name { color: var(--amber); }
@keyframes identPulse { 0%,100% { box-shadow: 0 0 20px var(--amber-dim); } 50% { box-shadow: 0 0 35px rgba(240, 160, 48, 0.25); } }
.arch-layer.resolved { border-color: rgba(0, 230, 118, 0.3); background: linear-gradient(135deg, rgba(0, 230, 118, 0.06), var(--bg-deep)); box-shadow: 0 0 20px var(--emerald-dim); }
.arch-layer.resolved .layer-name { color: var(--emerald); }

.arch-connector { width: 1px; height: 10px; background: linear-gradient(180deg, var(--border-active), transparent); position: relative; }
.arch-connector .data-dot { width: 3px; height: 3px; border-radius: 50%; background: var(--cyan); position: absolute; left: -1px; animation: flowDown 2s linear infinite; opacity: 0.6; }
@keyframes flowDown { 0% { top: 0; opacity: 0; } 20% { opacity: 0.8; } 80% { opacity: 0.8; } 100% { top: 100%; opacity: 0; } }

/* ══════════ INVESTIGATION LOG ══════════ */
.log-body {
  height: 380px; overflow-y: auto; padding: 12px 16px;
  display: flex; flex-direction: column; gap: 8px;
  scrollbar-width: thin; scrollbar-color: rgba(100, 180, 255, 0.1) transparent;
}
.idle-prompt { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; gap: 12px; padding: 40px; }
.idle-prompt .idle-text { font-size: 13px; color: var(--text-secondary); text-align: center; line-height: 1.6; }

.incident-card {
  background: linear-gradient(135deg, rgba(0, 196, 255, 0.04), var(--bg-surface));
  border: 1px solid rgba(0, 196, 255, 0.12); border-radius: 10px;
  padding: 14px; animation: cardIn 0.6s var(--ease-out-expo) both;
}
@keyframes cardIn { from { opacity: 0; transform: translateY(8px); } }
.incident-label { font-family: var(--font-mono); font-size: 9px; font-weight: 500; letter-spacing: 1.5px; text-transform: uppercase; color: var(--cyan); margin-bottom: 8px; }
.incident-text { font-size: 12px; line-height: 1.6; color: var(--text-primary); }
.incident-meta { display: flex; gap: 16px; margin-top: 10px; flex-wrap: wrap; }
.incident-meta-item .meta-label { font-family: var(--font-mono); font-size: 8px; font-weight: 500; letter-spacing: 1.2px; text-transform: uppercase; color: var(--text-tertiary); }
.incident-meta-item .meta-value { font-family: var(--font-mono); font-size: 11px; color: var(--text-secondary); }

.log-entry {
  display: flex; gap: 10px; padding: 10px 12px;
  background: var(--bg-deep); border: 1px solid var(--border-subtle); border-radius: 8px;
  animation: entryIn 0.5s var(--ease-out-expo) both;
}
@keyframes entryIn { from { opacity: 0; transform: translateX(-12px); } }

.log-entry-icon {
  width: 24px; height: 24px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 11px;
}
.log-entry-icon.inspect { background: var(--cyan-dim); color: var(--cyan); }
.log-entry-icon.specialist { background: rgba(160, 120, 255, 0.12); color: #a078ff; }
.log-entry-icon.fix { background: var(--amber-dim); color: var(--amber); }
.log-entry-icon.submit { background: var(--emerald-dim); color: var(--emerald); }
.log-entry-content { flex: 1; min-width: 0; }
.log-entry-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 3px; }
.log-entry-type { font-family: var(--font-mono); font-size: 10px; font-weight: 500; letter-spacing: 0.8px; text-transform: uppercase; }
.log-entry-type.cyan { color: var(--cyan); }
.log-entry-type.purple { color: #a078ff; }
.log-entry-type.amber { color: var(--amber); }
.log-entry-type.emerald { color: var(--emerald); }
.log-entry-step { font-family: var(--font-mono); font-size: 9px; color: var(--text-tertiary); }
.log-entry-text { font-family: var(--font-mono); font-size: 10px; font-weight: 300; line-height: 1.55; color: var(--text-secondary); white-space: pre-wrap; word-break: break-word; }
.log-entry-reward { font-family: var(--font-mono); font-size: 10px; font-weight: 500; margin-top: 4px; }
.log-entry-reward.positive { color: var(--emerald); }
.log-entry-reward.negative { color: var(--coral); }

/* ══════════ SPECIALISTS ══════════ */
.specialists-body { padding: 10px 12px; display: flex; flex-direction: column; gap: 8px; overflow-y: auto; max-height: 420px; }
.specialist-card {
  background: var(--bg-deep); border: 1px solid var(--border-subtle); border-radius: 10px;
  padding: 10px 12px; transition: all var(--duration-slow) var(--ease-out-expo);
  animation: cardIn 0.5s var(--ease-out-expo) both;
}
.specialist-card.highlighted { border-color: rgba(160, 120, 255, 0.3); background: linear-gradient(135deg, rgba(160, 120, 255, 0.05), var(--bg-deep)); }
.specialist-card.wrong { border-color: rgba(255, 61, 90, 0.15); opacity: 0.5; }
.specialist-card.correct { border-color: rgba(0, 230, 118, 0.2); }
.specialist-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.specialist-name { font-family: var(--font-mono); font-size: 10px; font-weight: 500; letter-spacing: 1px; text-transform: uppercase; color: var(--text-secondary); transition: color var(--duration-med); }
.specialist-card.highlighted .specialist-name { color: #a078ff; }
.specialist-card.correct .specialist-name { color: var(--emerald); }
.specialist-card.wrong .specialist-name { color: var(--coral); }
.confidence-bar { width: 50px; height: 3px; background: rgba(255,255,255,0.06); border-radius: 2px; overflow: hidden; }
.confidence-fill { height: 100%; border-radius: 2px; background: var(--cyan); transition: width 1s var(--ease-out-expo); }
.specialist-card.wrong .confidence-fill { background: var(--coral); }
.specialist-card.correct .confidence-fill { background: var(--emerald); }
.specialist-opinion { font-size: 11px; font-weight: 300; line-height: 1.4; color: var(--text-secondary); }
.specialist-card.wrong .specialist-opinion { opacity: 0.5; }
.specialist-verdict { font-family: var(--font-mono); font-size: 9px; font-weight: 500; letter-spacing: 1px; text-transform: uppercase; margin-top: 6px; opacity: 0; transition: opacity var(--duration-med); }
.specialist-card.wrong .specialist-verdict, .specialist-card.correct .specialist-verdict { opacity: 1; }
.specialist-card.wrong .specialist-verdict { color: var(--coral); }
.specialist-card.correct .specialist-verdict { color: var(--emerald); }

/* ══════════ VITALS BAR ══════════ */
.vitals-bar {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px;
}
.vital {
  background: linear-gradient(135deg, var(--bg-mid), var(--bg-surface));
  border: 1px solid var(--border-subtle); border-radius: 10px;
  padding: 10px 14px;
}
.vital-label { font-family: var(--font-mono); font-size: 9px; font-weight: 500; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 4px; }
.vital-value { font-family: var(--font-mono); font-size: 20px; font-weight: 300; transition: color var(--duration-med); }
.vital-value.cyan { color: var(--cyan); }
.vital-value.amber { color: var(--amber); }
.vital-value.emerald { color: var(--emerald); }
.vital-value.coral { color: var(--coral); }
.steps-dots { display: flex; gap: 5px; margin-top: 4px; }
.step-dot { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.06); transition: all var(--duration-med); }
.step-dot.used { background: var(--cyan); border-color: var(--cyan); box-shadow: 0 0 8px var(--cyan-dim); }
.step-dot.current { background: var(--amber); border-color: var(--amber); box-shadow: 0 0 8px var(--amber-dim); animation: dotPulse 1.5s ease-in-out infinite; }

/* ══════════ CONTROLS ══════════ */
.controls {
  display: flex; justify-content: center; gap: 12px; padding: 4px 0;
}
.ctrl-btn {
  font-family: var(--font-mono); font-size: 12px; font-weight: 500;
  letter-spacing: 1px; text-transform: uppercase;
  padding: 12px 28px; border-radius: 10px;
  cursor: pointer; transition: all var(--duration-fast) ease;
  border: none;
}
.ctrl-btn.primary {
  background: linear-gradient(135deg, var(--cyan), rgba(0, 160, 220, 0.9));
  color: #fff; box-shadow: 0 0 24px var(--cyan-dim);
}
.ctrl-btn.primary:hover { box-shadow: 0 0 40px var(--cyan-glow); transform: translateY(-1px); }
.ctrl-btn.primary:disabled { opacity: 0.3; cursor: not-allowed; transform: none; box-shadow: none; }
.ctrl-btn.secondary {
  background: var(--bg-surface); color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}
.ctrl-btn.secondary:hover { border-color: var(--border-active); color: var(--text-primary); }
.server-input {
  font-family: var(--font-mono); font-size: 11px; padding: 10px 14px;
  background: var(--bg-deep); color: var(--cyan); border: 1px solid var(--border-subtle);
  border-radius: 8px; width: 200px; outline: none;
}
.server-input:focus { border-color: var(--border-active); }
.conn-status {
  font-family: var(--font-mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 1px; color: var(--text-tertiary); padding: 0 8px;
}
.conn-status.connected { color: var(--emerald); }
.conn-status.error { color: var(--coral); }
.conn-status.running { color: var(--amber); }

/* ══════════ DIAGNOSIS OVERLAY ══════════ */
.diagnosis-overlay {
  position: fixed; inset: 0;
  background: rgba(6, 10, 17, 0.85); backdrop-filter: blur(20px);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; opacity: 0; pointer-events: none;
  transition: opacity 0.6s var(--ease-out-expo);
}
.diagnosis-overlay.visible { opacity: 1; pointer-events: auto; }
.diagnosis-card {
  background: linear-gradient(180deg, var(--bg-surface), var(--bg-deep));
  border: 1px solid var(--border-active); border-radius: 20px;
  padding: 40px 48px; max-width: 520px; width: 100%; text-align: center;
  transform: scale(0.92) translateY(20px);
  transition: transform 0.8s var(--ease-out-expo);
  box-shadow: 0 0 60px rgba(0, 196, 255, 0.08), 0 20px 60px rgba(0, 0, 0, 0.4);
}
.diagnosis-overlay.visible .diagnosis-card { transform: scale(1) translateY(0); }
.diagnosis-title { font-family: var(--font-mono); font-size: 11px; font-weight: 500; letter-spacing: 3px; text-transform: uppercase; color: var(--cyan); margin-bottom: 24px; }
.diagnosis-result { display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; }
.diagnosis-row { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; background: var(--bg-deep); border-radius: 10px; border: 1px solid var(--border-subtle); }
.diagnosis-row-label { font-family: var(--font-mono); font-size: 10px; font-weight: 500; letter-spacing: 1px; text-transform: uppercase; color: var(--text-tertiary); }
.diagnosis-row-value { font-family: var(--font-mono); font-size: 13px; }
.diagnosis-row-value.correct { color: var(--emerald); }
.diagnosis-row-value.wrong { color: var(--coral); }
.diagnosis-reward { font-size: 48px; font-weight: 700; letter-spacing: -2px; margin-bottom: 8px; }
.diagnosis-reward-label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 1px; text-transform: uppercase; color: var(--text-tertiary); }

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(100, 180, 255, 0.15); border-radius: 4px; }

@media (max-width: 1000px) {
  .warroom { grid-template-columns: 1fr; }
  .chart-section { grid-template-columns: 1fr; }
  .vitals-bar { grid-template-columns: repeat(3, 1fr); }
}
</style>
</head>
<body>
<div class="grid-overlay"></div>

<div class="app">
  <header class="header">
    <div class="header-left">
      <div class="logo-mark">
        <svg viewBox="0 0 24 24" fill="none" stroke="white" stroke-width="2" stroke-linecap="round">
          <path d="M12 3v18M3 12h18M7 7l10 10M17 7L7 17"/>
        </svg>
      </div>
      <div>
        <div class="header-title">Stack Doctor</div>
        <div class="header-subtitle">Incident War Room</div>
      </div>
    </div>
    <div class="header-right">
      <div>
        <div class="header-meta-label">Scenario</div>
        <div class="header-meta-value" id="scenarioId">&mdash;</div>
      </div>
      <div>
        <div class="header-meta-label">Episode</div>
        <div class="header-meta-value" id="episodeTime">00:00</div>
      </div>
      <div class="status-badge" id="statusBadge">Standby</div>
    </div>
  </header>

  <!-- ══════════ TRAINING DATA ══════════ -->
  <div class="section-title">Training Analytics</div>
  <div class="chart-section" style="grid-template-columns: 1fr; max-width: 900px; margin: 0 auto; width: 100%;">
    <div class="chart-panel">
      <div class="chart-panel-title">Qwen3.5-9B &mdash; Episode Reward</div>
      <div class="chart-panel-subtitle">100 GRPO steps &mdash; base model already near-oracle</div>
      <div class="chart-canvas-wrap"><canvas id="rewardChart"></canvas></div>
      <div class="chart-stat-row">
        <div class="chart-stat">
          <div class="chart-stat-label">Peak</div>
          <div class="chart-stat-value emerald">+26.00</div>
        </div>
        <div class="chart-stat">
          <div class="chart-stat-label">Base Avg</div>
          <div class="chart-stat-value cyan">+19.50</div>
        </div>
        <div class="chart-stat">
          <div class="chart-stat-label">Zero-Std</div>
          <div class="chart-stat-value coral">72%</div>
        </div>
      </div>
    </div>
    <div class="chart-panel">
      <div class="chart-panel-title">Qwen3.5-9B &mdash; Completion Length</div>
      <div class="chart-panel-subtitle">Thinking mode consumed token budget, hit 2048 cap</div>
      <div class="chart-canvas-wrap"><canvas id="lengthChart"></canvas></div>
      <div class="chart-stat-row">
        <div class="chart-stat">
          <div class="chart-stat-label">Collapse</div>
          <div class="chart-stat-value coral">Step 36</div>
        </div>
        <div class="chart-stat">
          <div class="chart-stat-label">Clipping</div>
          <div class="chart-stat-value amber">Step 69</div>
        </div>
      </div>
    </div>
    <div class="chart-panel" style="border-color: rgba(0, 196, 255, 0.15);">
      <div class="chart-panel-title">Qwen2.5-1.5B &mdash; Episode Reward</div>
      <div class="chart-panel-subtitle">16 GRPO steps &mdash; weak model, real gradient signal</div>
      <div class="chart-canvas-wrap"><canvas id="reward1bChart"></canvas></div>
      <div class="chart-stat-row">
        <div class="chart-stat">
          <div class="chart-stat-label">Best Step</div>
          <div class="chart-stat-value cyan">-1.75</div>
        </div>
        <div class="chart-stat">
          <div class="chart-stat-label">Avg</div>
          <div class="chart-stat-value amber">-4.90</div>
        </div>
        <div class="chart-stat">
          <div class="chart-stat-label">Zero-Std</div>
          <div class="chart-stat-value emerald">0%</div>
        </div>
      </div>
    </div>
  </div>

  <!-- ══════════ DEMO CONTROLS ══════════ -->
  <div class="section-title">Live Environment</div>
  <div class="controls">
    <input type="text" id="serverUrl" class="server-input" placeholder="Server URL (empty = same origin)">
    <script>
    /* Auto-detect: use localhost:8000 for local dev, empty for HF Spaces */
    if (location.hostname === 'localhost' || location.hostname === '127.0.0.1') {
      document.getElementById('serverUrl').value = 'http://localhost:8000';
    }
    </script>
    <button class="ctrl-btn primary" id="demoBtn" onclick="runComparison()">&#9654; Run Comparison (Base → GRPO Trained)</button>
    <button class="ctrl-btn secondary" id="resetBtn" onclick="resetState()">&#8634; Reset</button>
    <span id="modelStatus" class="conn-status" style="margin-left:8px;">Model: checking...</span>
    <span id="connStatus" class="conn-status">Disconnected</span>
  </div>

  <!-- ══════════ WAR ROOM ══════════ -->
  <div class="warroom">
    <div class="panel">
      <div class="panel-header">
        <div class="panel-header-dot"></div>
        <div class="panel-header-title">Inference Stack</div>
      </div>
      <div class="arch-body" id="archBody">
        <div class="arch-layer" id="layer-model"><div class="layer-name">Model</div><div class="layer-detail" id="detail-model">&mdash;</div></div>
        <div class="arch-connector"><div class="data-dot"></div></div>
        <div class="arch-layer" id="layer-kernel"><div class="layer-name">Kernel</div><div class="layer-detail">Attention / GEMM</div></div>
        <div class="arch-connector"><div class="data-dot" style="animation-delay:-0.5s"></div></div>
        <div class="arch-layer" id="layer-backend"><div class="layer-name">Backend</div><div class="layer-detail" id="detail-backend">&mdash;</div></div>
        <div class="arch-connector"><div class="data-dot" style="animation-delay:-1s"></div></div>
        <div class="arch-layer" id="layer-runtime"><div class="layer-name">Runtime</div><div class="layer-detail">CUDA / ROCm</div></div>
        <div class="arch-connector"><div class="data-dot" style="animation-delay:-1.5s"></div></div>
        <div class="arch-layer" id="layer-memory"><div class="layer-name">Memory</div><div class="layer-detail">HBM / KV Cache</div></div>
        <div class="arch-connector"><div class="data-dot" style="animation-delay:-2s"></div></div>
        <div class="arch-layer" id="layer-driver"><div class="layer-name">Driver</div><div class="layer-detail" id="detail-driver">&mdash;</div></div>
      </div>
    </div>

    <div class="panel">
      <div class="panel-header">
        <div class="panel-header-dot"></div>
        <div class="panel-header-title">Investigation Log</div>
      </div>
      <div class="log-body" id="logBody">
        <div class="idle-prompt" id="idlePrompt">
          <div class="idle-text">Awaiting incident assignment.<br>Click <strong>Run Demo</strong> above to start.</div>
        </div>
      </div>
    </div>

    <div class="panel">
      <div class="panel-header">
        <div class="panel-header-dot"></div>
        <div class="panel-header-title">Specialist Agents</div>
      </div>
      <div class="specialists-body" id="specialistsBody"></div>
    </div>
  </div>

  <!-- ══════════ VITALS ══════════ -->
  <div class="vitals-bar">
    <div class="vital">
      <div class="vital-label">Steps</div>
      <div class="steps-dots" id="stepsDots">
        <div class="step-dot"></div><div class="step-dot"></div><div class="step-dot"></div>
        <div class="step-dot"></div><div class="step-dot"></div><div class="step-dot"></div>
      </div>
    </div>
    <div class="vital"><div class="vital-label">Reward</div><div class="vital-value" id="rewardValue">0.00</div></div>
    <div class="vital"><div class="vital-label">Fix Status</div><div class="vital-value" id="fixStatus" style="font-size:13px">Not Applied</div></div>
    <div class="vital"><div class="vital-label">Root Cause</div><div class="vital-value" id="rootCauseValue" style="font-size:13px">&mdash;</div></div>
    <div class="vital"><div class="vital-label">Diagnosis</div><div class="vital-value" id="diagnosisValue" style="font-size:13px">Pending</div></div>
  </div>
</div>

<div class="diagnosis-overlay" id="diagnosisOverlay">
  <div class="diagnosis-card">
    <div class="diagnosis-title">Diagnosis Submitted</div>
    <div class="diagnosis-result" id="diagnosisResult"></div>
    <div class="diagnosis-reward" id="diagnosisReward">+0.00</div>
    <div class="diagnosis-reward-label">Episode Reward</div>
  </div>
</div>

<script>
/* ═══════════════════════════════════════════════
   TRAINING DATA — Qwen3.5-9B, 100 GRPO steps
   ═══════════════════════════════════════════════ */
var TRAIN_DATA = {
  steps: [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100],
  reward: [9.65,19.75,7.25,24.25,23.00,22.75,2.62,22.75,23.00,24.50,16.00,23.00,24.50,7.25,24.62,26.00,26.00,26.00,22.50,14.12,-5.45,7.12,-2.60,-8.50,18.50,0.88,26.25,7.88,9.62,7.88,6.88,24.25,-6.25,-5.50,-1.88,-1.75,-1.75,-5.12,-2.62,-1.75,-1.75,-1.75,-2.62,-1.75,-1.75,-1.75,-1.75,-1.75,-1.75,-1.75,-5.12,-1.75,-1.75,-1.75,-1.75,-1.75,-1.75,-1.75,-5.12,-5.12,-1.75,-1.75,-1.75,-1.75,-8.50,-5.12,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-8.50,-5.00,-8.50,-8.50,-8.50,-1.75,-5.12,-1.75,-1.75,-1.75,-5.12,-1.75,-1.75,-0.12,-1.75,-2.62,-1.75,-1.75],
  completion_length: [68,98,91,96,85,92,96,74,99,71,86,116,112,124,126,175,105,120,152,112,148,190,193,182,164,135,140,218,130,152,164,182,134,93,24,15,18,87,16,16,15,15,15,15,13,15,15,16,15,15,125,62,180,876,376,280,883,484,734,470,432,488,354,177,471,607,248,210,1234,3,2048,2048,2048,2048,2048,1024,1026,1078,2048,1025,14,1030,2048,1025,2048,2048,2048,1364,1032,15,15,15,14,15,15,1032,2048,1065,2048,1058],
};

/* Qwen2.5-1.5B — 16 steps before crash (fixed in next run) */
var TRAIN_DATA_1B = {
  steps: [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16],
  reward: [-5.625,-3.375,-8.375,-7.75,-2.75,-2.625,-3.0,-5.125,-8.875,-3.0,-1.75,-3.875,-9.5,-5.5,-3.125,-6.125],
  completion_length: [65.5,57.5,53,36.5,81,98,89,41.5,46,62.5,75,72.5,48,52.5,44,60],
};

/* ═══════════════════════════════════════════════
   CHARTS — lightweight canvas rendering
   ═══════════════════════════════════════════════ */
function drawChart(canvasId, data, opts) {
  var canvas = document.getElementById(canvasId);
  var dpr = window.devicePixelRatio || 1;
  var rect = canvas.parentElement.getBoundingClientRect();
  canvas.width = rect.width * dpr;
  canvas.height = rect.height * dpr;
  canvas.style.width = rect.width + 'px';
  canvas.style.height = rect.height + 'px';
  var ctx = canvas.getContext('2d');
  ctx.scale(dpr, dpr);
  var W = rect.width, H = rect.height;
  var pad = { top: 28, right: 24, bottom: 40, left: 64 };
  var plotW = W - pad.left - pad.right;
  var plotH = H - pad.top - pad.bottom;

  var minY = opts.minY !== undefined ? opts.minY : Math.min.apply(null, data);
  var maxY = opts.maxY !== undefined ? opts.maxY : Math.max.apply(null, data);
  var rangeY = maxY - minY || 1;

  function xPos(i) { return pad.left + (i / (data.length - 1)) * plotW; }
  function yPos(v) { return pad.top + plotH - ((v - minY) / rangeY) * plotH; }

  // Grid lines
  ctx.strokeStyle = 'rgba(100,180,255,0.06)';
  ctx.lineWidth = 1;
  var gridCount = 5;
  for (var g = 0; g <= gridCount; g++) {
    var gy = pad.top + (g / gridCount) * plotH;
    ctx.beginPath(); ctx.moveTo(pad.left, gy); ctx.lineTo(W - pad.right, gy); ctx.stroke();
    var label = (maxY - (g / gridCount) * rangeY).toFixed(0);
    ctx.fillStyle = 'rgba(216,224,236,0.25)';
    ctx.font = '10px IBM Plex Mono';
    ctx.textAlign = 'right';
    ctx.fillText(label, pad.left - 12, gy + 4);
  }

  // X axis labels
  var stepsArr = opts.stepsArray || TRAIN_DATA.steps;
  var xInterval = data.length > 30 ? 20 : data.length > 10 ? 5 : 2;
  ctx.fillStyle = 'rgba(216,224,236,0.25)';
  ctx.textAlign = 'center';
  for (var x = 0; x < data.length; x += xInterval) {
    ctx.fillText(stepsArr[x], xPos(x), H - 8);
  }
  ctx.fillText(stepsArr[data.length - 1], xPos(data.length - 1), H - 8);

  // Zero line for reward chart
  if (opts.zeroLine) {
    var zy = yPos(0);
    if (zy >= pad.top && zy <= pad.top + plotH) {
      ctx.strokeStyle = 'rgba(255,255,255,0.12)';
      ctx.setLineDash([4, 4]);
      ctx.beginPath(); ctx.moveTo(pad.left, zy); ctx.lineTo(W - pad.right, zy); ctx.stroke();
      ctx.setLineDash([]);
    }
  }

  // Reference lines (baselines) — drawn before data so they appear underneath
  if (opts.refLines) {
    opts.refLines.forEach(function(ref) {
      var ry = yPos(ref.value);
      if (ry >= pad.top - 5 && ry <= pad.top + plotH + 5) {
        ctx.strokeStyle = ref.color || 'rgba(255,255,255,0.2)';
        ctx.lineWidth = 1.5;
        ctx.setLineDash(ref.dash || [6, 4]);
        ctx.beginPath(); ctx.moveTo(pad.left, ry); ctx.lineTo(W - pad.right, ry); ctx.stroke();
        ctx.setLineDash([]);
        // Draw label with opaque background so it's never covered
        var labelY = ref.labelBelow ? ry + 24 : ry - 16;
        ctx.font = '600 9px IBM Plex Mono';
        var textWidth = ctx.measureText(ref.label).width;
        // Background pill
        ctx.fillStyle = 'rgba(6, 10, 17, 0.85)';
        ctx.beginPath();
        ctx.roundRect(W - pad.right - textWidth - 16, labelY - 9, textWidth + 12, 14, 3);
        ctx.fill();
        // Label text
        ctx.fillStyle = ref.color || 'rgba(255,255,255,0.3)';
        ctx.textAlign = 'right';
        ctx.fillText(ref.label, W - pad.right - 8, labelY);
      }
    });
  }

  // Regions
  if (opts.regions) {
    opts.regions.forEach(function(r) {
      var x1 = xPos(r.from);
      var x2 = xPos(r.to);
      ctx.fillStyle = r.color;
      ctx.fillRect(x1, pad.top, x2 - x1, plotH);
      ctx.fillStyle = r.labelColor || 'rgba(216,224,236,0.35)';
      ctx.font = '600 8px IBM Plex Mono';
      ctx.textAlign = 'center';
      ctx.fillText(r.label, (x1 + x2) / 2, pad.top - 6);
    });
  }

  // Line gradient
  var grad = ctx.createLinearGradient(pad.left, 0, W - pad.right, 0);
  if (opts.gradientStops) {
    opts.gradientStops.forEach(function(s) { grad.addColorStop(s[0], s[1]); });
  } else {
    grad.addColorStop(0, opts.color || '#00c4ff');
    grad.addColorStop(1, opts.color || '#00c4ff');
  }

  // Area fill
  ctx.beginPath();
  ctx.moveTo(xPos(0), yPos(data[0]));
  for (var i = 1; i < data.length; i++) ctx.lineTo(xPos(i), yPos(data[i]));
  ctx.lineTo(xPos(data.length - 1), yPos(minY));
  ctx.lineTo(xPos(0), yPos(minY));
  ctx.closePath();
  var areaGrad = ctx.createLinearGradient(0, pad.top, 0, pad.top + plotH);
  areaGrad.addColorStop(0, (opts.areaColor || 'rgba(0,196,255,0.12)'));
  areaGrad.addColorStop(1, 'rgba(0,196,255,0)');
  ctx.fillStyle = areaGrad;
  ctx.fill();

  // Line
  ctx.strokeStyle = grad;
  ctx.lineWidth = 2;
  ctx.lineJoin = 'round';
  ctx.beginPath();
  ctx.moveTo(xPos(0), yPos(data[0]));
  for (var j = 1; j < data.length; j++) ctx.lineTo(xPos(j), yPos(data[j]));
  ctx.stroke();

  // Dot at end
  var lastX = xPos(data.length - 1), lastY = yPos(data[data.length - 1]);
  ctx.fillStyle = opts.color || '#00c4ff';
  ctx.beginPath(); ctx.arc(lastX, lastY, 3, 0, Math.PI * 2); ctx.fill();
}

function renderCharts() {
  drawChart('rewardChart', TRAIN_DATA.reward, {
    minY: -12, maxY: 30, zeroLine: true,
    gradientStops: [[0, '#00e676'], [0.18, '#00e676'], [0.22, '#f0a030'], [0.35, '#ff3d5a'], [1, '#ff3d5a']],
    areaColor: 'rgba(0,196,255,0.08)',
    regions: [
      { from: 0, to: 19, label: 'BASE MODEL', color: 'rgba(0,230,118,0.04)', labelColor: 'rgba(0,230,118,0.5)' },
      { from: 20, to: 35, label: 'DEGRADATION', color: 'rgba(240,160,48,0.04)', labelColor: 'rgba(240,160,48,0.5)' },
      { from: 36, to: 69, label: 'COLLAPSE', color: 'rgba(255,61,90,0.04)', labelColor: 'rgba(255,61,90,0.5)' },
      { from: 70, to: 99, label: 'CLIPPING', color: 'rgba(255,61,90,0.03)', labelColor: 'rgba(255,61,90,0.4)' },
    ],
    refLines: [
      { value: 19.5, label: '9B BASELINE +19.5', color: 'rgba(0,230,118,0.5)', dash: [8, 4] },
    ],
  });

  drawChart('lengthChart', TRAIN_DATA.completion_length, {
    minY: 0, maxY: 2200,
    color: '#f0a030',
    areaColor: 'rgba(240,160,48,0.08)',
    regions: [
      { from: 0, to: 35, label: 'NORMAL', color: 'rgba(0,230,118,0.03)', labelColor: 'rgba(0,230,118,0.4)' },
      { from: 36, to: 68, label: 'SHORT OUTPUT', color: 'rgba(240,160,48,0.04)', labelColor: 'rgba(240,160,48,0.5)' },
      { from: 69, to: 99, label: 'HIT CAP (2048)', color: 'rgba(255,61,90,0.04)', labelColor: 'rgba(255,61,90,0.5)' },
    ],
  });

  drawChart('reward1bChart', TRAIN_DATA_1B.reward, {
    minY: -12, maxY: 22, zeroLine: true,
    stepsArray: TRAIN_DATA_1B.steps,
    color: '#00c4ff',
    areaColor: 'rgba(0,196,255,0.1)',
    gradientStops: [[0, '#ff3d5a'], [0.4, '#f0a030'], [0.7, '#00c4ff'], [1, '#00c4ff']],
    refLines: [
      { value: 19.5, label: '9B BASELINE +19.5', color: 'rgba(0,230,118,0.4)', dash: [8, 4] },
      { value: -4.9, label: '1.5B BASELINE -4.9', color: 'rgba(240,160,48,0.5)', dash: [4, 4], labelBelow: true },
    ],
  });
}

window.addEventListener('resize', renderCharts);
setTimeout(renderCharts, 100);

/* ═══════════════════════════════════════════════
   WAR ROOM ENGINE
   ═══════════════════════════════════════════════ */
var ACTION_ICONS = { inspect: '\u2315', ask_specialist: '\u25C9', apply_fix: '\u26A1', submit: '\u2713', reward_breakdown: '\u2261' };
var state = { step: 0, reward: 0, fixApplied: false, done: false, startTime: null, timerInterval: null };

function startTimer() {
  state.startTime = Date.now();
  state.timerInterval = setInterval(function() {
    var e = Math.floor((Date.now() - state.startTime) / 1000);
    document.getElementById('episodeTime').textContent = String(Math.floor(e/60)).padStart(2,'0') + ':' + String(e%60).padStart(2,'0');
  }, 1000);
}
function stopTimer() { if (state.timerInterval) clearInterval(state.timerInterval); }

function updateSteps(step) {
  document.querySelectorAll('.step-dot').forEach(function(d, i) {
    d.className = 'step-dot';
    if (i < step) d.classList.add('used');
    else if (i === step && !state.done) d.classList.add('current');
  });
}

function updateReward(delta) {
  state.reward += delta;
  var el = document.getElementById('rewardValue');
  el.textContent = (state.reward >= 0 ? '+' : '') + state.reward.toFixed(2);
  el.className = 'vital-value ' + (state.reward >= 0 ? 'emerald' : 'coral');
}

function setLayerState(id, cls) {
  var el = document.getElementById('layer-' + id);
  if (el) el.className = 'arch-layer' + (cls ? ' ' + cls : '');
}
function clearAllLayers() { document.querySelectorAll('.arch-layer').forEach(function(e) { e.className = 'arch-layer'; }); }
function setStatus(text, cls) { var el = document.getElementById('statusBadge'); el.textContent = text; el.className = 'status-badge' + (cls ? ' ' + cls : ''); }

function addLogEntry(opts) {
  var idle = document.getElementById('idlePrompt'); if (idle) idle.remove();
  var body = document.getElementById('logBody');
  var entry = document.createElement('div'); entry.className = 'log-entry';
  var iconCls = opts.type === 'ask_specialist' ? 'specialist' : opts.type;
  var typeCls = opts.type === 'inspect' ? 'cyan' : opts.type === 'ask_specialist' ? 'purple' : opts.type === 'apply_fix' ? 'amber' : 'emerald';
  var iconEl = document.createElement('div'); iconEl.className = 'log-entry-icon ' + iconCls; iconEl.textContent = ACTION_ICONS[opts.type] || '\u2022';
  var contentEl = document.createElement('div'); contentEl.className = 'log-entry-content';
  var headerEl = document.createElement('div'); headerEl.className = 'log-entry-header';
  var typeEl = document.createElement('div'); typeEl.className = 'log-entry-type ' + typeCls; typeEl.textContent = opts.label;
  var stepEl = document.createElement('div'); stepEl.className = 'log-entry-step'; stepEl.textContent = 'Step ' + state.step + '/6';
  headerEl.appendChild(typeEl); headerEl.appendChild(stepEl);
  var textEl = document.createElement('div'); textEl.className = 'log-entry-text'; textEl.textContent = opts.text;
  contentEl.appendChild(headerEl); contentEl.appendChild(textEl);
  if (opts.reward !== undefined) {
    var rEl = document.createElement('div'); rEl.className = 'log-entry-reward ' + (opts.reward >= 0 ? 'positive' : 'negative');
    rEl.textContent = (opts.reward >= 0 ? '+' : '') + opts.reward.toFixed(2); contentEl.appendChild(rEl);
  }
  entry.appendChild(iconEl); entry.appendChild(contentEl);
  body.appendChild(entry); body.scrollTop = body.scrollHeight;
}

function addIncidentCard(sc) {
  var idle = document.getElementById('idlePrompt'); if (idle) idle.remove();
  var body = document.getElementById('logBody');
  var card = document.createElement('div'); card.className = 'incident-card';
  var label = document.createElement('div'); label.className = 'incident-label'; label.textContent = 'Incident Ticket';
  var text = document.createElement('div'); text.className = 'incident-text'; text.textContent = sc.incident_ticket;
  var meta = document.createElement('div'); meta.className = 'incident-meta';
  [['Hardware', sc.hardware], ['Model', sc.model_name], ['Backend', sc.backend]].forEach(function(f) {
    var item = document.createElement('div'); item.className = 'incident-meta-item';
    var ml = document.createElement('div'); ml.className = 'meta-label'; ml.textContent = f[0];
    var mv = document.createElement('div'); mv.className = 'meta-value'; mv.textContent = f[1];
    item.appendChild(ml); item.appendChild(mv); meta.appendChild(item);
  });
  card.appendChild(label); card.appendChild(text); card.appendChild(meta); body.appendChild(card);
}

function populateSpecialists(ops) {
  var body = document.getElementById('specialistsBody'); body.textContent = '';
  var i = 0;
  Object.keys(ops).forEach(function(name) {
    var d = ops[name];
    var card = document.createElement('div'); card.className = 'specialist-card'; card.id = 'specialist-' + name;
    card.style.animationDelay = (i * 0.1) + 's';
    var top = document.createElement('div'); top.className = 'specialist-top';
    var nameEl = document.createElement('div'); nameEl.className = 'specialist-name'; nameEl.textContent = name;
    var barW = document.createElement('div'); barW.className = 'confidence-bar';
    var barF = document.createElement('div'); barF.className = 'confidence-fill'; barF.style.width = (d.confidence * 100) + '%';
    barW.appendChild(barF); top.appendChild(nameEl); top.appendChild(barW);
    var opEl = document.createElement('div'); opEl.className = 'specialist-opinion'; opEl.textContent = d.opinion;
    var vEl = document.createElement('div'); vEl.className = 'specialist-verdict';
    card.appendChild(top); card.appendChild(opEl); card.appendChild(vEl); body.appendChild(card); i++;
  });
}

function highlightSpecialist(name) {
  document.querySelectorAll('.specialist-card').forEach(function(c) { c.classList.remove('highlighted'); });
  var c = document.getElementById('specialist-' + name); if (c) c.classList.add('highlighted');
}
function markSpecialist(name, correct) {
  var c = document.getElementById('specialist-' + name); if (!c) return;
  c.classList.remove('highlighted'); c.classList.add(correct ? 'correct' : 'wrong');
  var v = c.querySelector('.specialist-verdict'); if (v) v.textContent = correct ? '\u2713 Helpful' : '\u2014 Not Relevant';
}

function showDiagnosis(d) {
  var overlay = document.getElementById('diagnosisOverlay');
  var result = document.getElementById('diagnosisResult'); result.textContent = '';
  [['Root Cause', d.rootCause, d.rcCorrect, d.correctRc], ['Fix', d.fix, d.fixCorrect, d.correctFix]].forEach(function(r) {
    var row = document.createElement('div'); row.className = 'diagnosis-row';
    var lbl = document.createElement('div'); lbl.className = 'diagnosis-row-label'; lbl.textContent = r[0];
    var val = document.createElement('div'); val.className = 'diagnosis-row-value ' + (r[2] ? 'correct' : 'wrong');
    val.textContent = r[1] + (r[2] ? ' \u2713' : ' \u2717 \u2192 ' + r[3]);
    row.appendChild(lbl); row.appendChild(val); result.appendChild(row);
  });
  // Steps used + time
  var stepsRow = document.createElement('div'); stepsRow.className = 'diagnosis-row';
  var stepsLbl = document.createElement('div'); stepsLbl.className = 'diagnosis-row-label'; stepsLbl.textContent = 'Steps Used';
  var stepsVal = document.createElement('div'); stepsVal.className = 'diagnosis-row-value'; stepsVal.textContent = state.step + ' / 6';
  stepsRow.appendChild(stepsLbl); stepsRow.appendChild(stepsVal); result.appendChild(stepsRow);

  var timeRow = document.createElement('div'); timeRow.className = 'diagnosis-row';
  var timeLbl = document.createElement('div'); timeLbl.className = 'diagnosis-row-label'; timeLbl.textContent = 'Time';
  var elapsed = state.startTime ? Math.round((Date.now() - state.startTime) / 1000) : 0;
  var timeVal = document.createElement('div'); timeVal.className = 'diagnosis-row-value'; timeVal.textContent = elapsed + 's';
  timeRow.appendChild(timeLbl); timeRow.appendChild(timeVal); result.appendChild(timeRow);

  var rEl = document.getElementById('diagnosisReward');
  rEl.textContent = (d.totalReward >= 0 ? '+' : '') + d.totalReward.toFixed(2);
  rEl.style.color = d.totalReward >= 0 ? 'var(--emerald)' : 'var(--coral)';
  overlay.classList.add('visible');
}

function resetState() {
  state = { step: 0, reward: 0, fixApplied: false, done: false, startTime: null, timerInterval: null };
  stopTimer();
  document.getElementById('logBody').textContent = '';
  var logBody = document.getElementById('logBody');
  var idle = document.createElement('div'); idle.className = 'idle-prompt'; idle.id = 'idlePrompt';
  var txt = document.createElement('div'); txt.className = 'idle-text'; txt.textContent = 'Awaiting incident assignment.\nConnect to a live Stack Doctor environment above.';
  idle.appendChild(txt); logBody.appendChild(idle);
  document.getElementById('specialistsBody').textContent = '';
  document.getElementById('rewardValue').textContent = '0.00'; document.getElementById('rewardValue').className = 'vital-value';
  document.getElementById('fixStatus').textContent = 'Not Applied'; document.getElementById('fixStatus').className = 'vital-value';
  document.getElementById('rootCauseValue').textContent = '\u2014'; document.getElementById('rootCauseValue').className = 'vital-value';
  document.getElementById('diagnosisValue').textContent = 'Pending'; document.getElementById('diagnosisValue').className = 'vital-value';
  document.getElementById('scenarioId').textContent = '\u2014';
  document.getElementById('episodeTime').textContent = '00:00';
  document.getElementById('diagnosisOverlay').classList.remove('visible');
  setStatus('Standby', ''); clearAllLayers(); updateSteps(0);
  setConnStatus('Disconnected', '');
}

/* ═══════════════════════════════════════════════
   DEMO — arch_guard_01
   ═══════════════════════════════════════════════ */
var DEMO = {
  id: 'arch_guard_01', root_cause: 'arch_guard', correct_fix: 'relax_arch_check',
  incident_ticket: "FlashInfer attention kernel fails to launch on newly provisioned DGX Spark nodes. Error: 'Unsupported GPU architecture sm_121'. Identical model config works on H100 nodes.",
  hardware: 'NVIDIA SM121 (DGX Spark)', model_name: 'DeepSeek-V3-671B', backend: 'FlashInfer 0.4',
  specialist_opinions: {
    runtime: { opinion: "CUDA runtime loaded successfully. No runtime issues detected.", confidence: 0.85 },
    dispatch: { opinion: "Architecture check is blocking kernel dispatch. SM121 is not in the supported set despite being SM90-compatible.", confidence: 0.92 },
    kernel: { opinion: "HMMA m16n8k16 instructions available on SM121. Capability check issue.", confidence: 0.88 },
    loader: { opinion: "Model weights loaded correctly. Weight layout is standard.", confidence: 0.80 },
  },
  inspect_logs: "[FlashInfer] GPU: NVIDIA GH200 (sm_121)\n[FlashInfer] is_supported_arch(121) = False\n[FlashInfer] Architecture check FAILED\n[CUDA] All CUDA operations nominal\n[System] GPU memory: 96GB available",
  inspect_config: "gpu_architecture: sm_121\ncuda_version: 13.0\nflashinfer_version: 0.4.1\nsupported_archs: [70, 75, 80, 86, 89, 90]",
  followup_dispatch: "The dispatch table maps arch -> kernel. SM121 has no entry. Adding sm_12x family to the arch check should resolve this.",
};

function sleep(ms) { return new Promise(function(r) { setTimeout(r, ms); }); }

/* ══════════════════════════════════════════════
   LIVE ENVIRONMENT CONNECTION
   ══════════════════════════════════════════════ */
var SERVER = { url: '', ws: null };

function getServerUrl() { return document.getElementById('serverUrl').value.replace(/\/$/, ''); }
function getWsUrl() {
  var base = getServerUrl();
  if (!base) {
    // Same-origin: derive WS URL from current page
    var proto = location.protocol === 'https:' ? 'wss:' : 'ws:';
    return proto + '//' + location.host + '/ws';
  }
  return base.replace(/^http/, 'ws') + '/ws';
}
function setConnStatus(text, cls) {
  var el = document.getElementById('connStatus');
  el.textContent = text; el.className = 'conn-status' + (cls ? ' ' + cls : '');
}

/* WebSocket-based communication — maintains session state across reset/step */
function wsConnect() {
  return new Promise(function(resolve, reject) {
    var url = getWsUrl();
    var ws = new WebSocket(url);
    ws.onopen = function() { SERVER.ws = ws; resolve(ws); };
    ws.onerror = function(e) { reject(new Error('WebSocket connection failed')); };
    ws.onclose = function() { SERVER.ws = null; };
  });
}

function wsSend(type, data) {
  return new Promise(function(resolve, reject) {
    if (!SERVER.ws || SERVER.ws.readyState !== WebSocket.OPEN) {
      reject(new Error('WebSocket not connected')); return;
    }
    SERVER.ws.onmessage = function(evt) {
      try {
        var msg = JSON.parse(evt.data);
        resolve(msg);  /* Always resolve — caller handles errors */
      }
      catch (e) { reject(new Error('Bad JSON from server')); }
    };
    SERVER.ws.send(JSON.stringify({ type: type, data: data || {} }));
  });
}

function wsClose() {
  if (SERVER.ws) { SERVER.ws.close(); SERVER.ws = null; }
}

/* Convenience wrappers — returns {observation, reward, done} from data envelope */
async function serverReset(body) {
  if (!SERVER.ws) await wsConnect();
  var msg = await wsSend('reset', body || {});
  if (msg.type === 'error') throw new Error((msg.data && msg.data.message) || 'Reset failed');
  return msg.data;  /* {observation, reward, done} */
}

async function serverStep(actionMessage) {
  /* WS step format: {type: "step", data: {message: "..."}} — NOT wrapped in action */
  var msg = await wsSend('step', { message: actionMessage });
  if (msg.type === 'error') {
    /* Environment validation error (invalid target, specialist, etc.) — return penalty */
    var errMsg = (msg.data && msg.data.message) || 'Unknown error';
    return { observation: { output: 'Error: ' + errMsg }, reward: -2.0, done: false };
  }
  return msg.data;  /* {observation, reward, done} */
}

function disableButtons() {
  var btn = document.getElementById('demoBtn');
  btn.disabled = true; btn.textContent = '\u25CF Running...';
}
function enableButtons() {
  var btn = document.getElementById('demoBtn');
  btn.disabled = false; btn.textContent = '\u25B6 Run Comparison (Untrained \u2192 Trained)';
}

/* Map root_cause to a layer name for the architecture diagram */
var CAUSE_TO_LAYER = {
  arch_guard: 'backend', backend_whitelist: 'backend', backend_selector: 'backend',
  runtime_loader: 'runtime', driver_compat: 'driver',
  model_config: 'model', weight_layout: 'model',
  memory_oom: 'memory', quantization_error: 'kernel',
  distributed_comm: 'runtime'
};

/* Parse the environment observation to extract structured info */
function parseObs(obs) {
  return {
    output: obs.output || '',
    ticket: obs.incident_ticket || '',
    hardware: obs.hardware || '',
    model: obs.model_name || '',
    backend: obs.backend || '',
    log: obs.log_excerpt || '',
    snippet: obs.code_snippet || '',
    specialists: obs.specialist_opinions || {},
    remaining: obs.steps_remaining,
    fixUsed: obs.fix_used,
    done: obs.done,
    reward: obs.reward || 0,
    meta: obs.metadata || {}
  };
}

async function runLive(mode) {
  disableButtons(); resetState(); setConnStatus('Connecting...', 'running');

  try {
    // Step 0: Reset — get a real scenario via WebSocket (stateful session)
    var resetResp = await serverReset({});
    var obs = parseObs(resetResp.observation || resetResp);
    setConnStatus('Connected', 'connected');
    startTimer();
    setStatus('Incident Received', 'warning');

    // Extract scenario ID from metadata
    var scenarioId = (obs.meta && obs.meta.scenario_id) || 'unknown';
    document.getElementById('scenarioId').textContent = scenarioId;
    document.getElementById('detail-model').textContent = obs.model;
    document.getElementById('detail-backend').textContent = obs.backend;
    document.getElementById('detail-driver').textContent = obs.hardware;

    // Populate incident card from real data
    addIncidentCard({
      incident_ticket: obs.ticket,
      hardware: obs.hardware, model_name: obs.model, backend: obs.backend
    });
    populateSpecialists(obs.specialists);
    await sleep(1800);

    if (mode === 'untrained') {
      await runLiveUntrained(obs);
    } else {
      await runLiveTrained(obs);
    }

    await sleep(6000);
    document.getElementById('diagnosisOverlay').classList.remove('visible');
  } catch (e) {
    console.error('Live connection failed:', e);
    addLogEntry({ type: 'submit', label: 'CONNECTION ERROR', reward: 0, text: e.message + '\n' + (e.stack || '') });
    wsClose();
    setConnStatus('Offline mode', 'running');
    await runOffline(mode);
    await sleep(6000);
    document.getElementById('diagnosisOverlay').classList.remove('visible');
  }
  wsClose();
  enableButtons();
}

/* ══════════════════════════════════════════════
   OFFLINE FALLBACK (no server needed)
   ══════════════════════════════════════════════ */
async function runOffline(mode) {
  var sc = DEMO;
  startTimer();
  setStatus('Incident Received', 'warning');
  document.getElementById('scenarioId').textContent = sc.id;
  document.getElementById('detail-model').textContent = sc.model_name;
  document.getElementById('detail-backend').textContent = sc.backend;
  document.getElementById('detail-driver').textContent = sc.hardware;
  addIncidentCard(sc); populateSpecialists(sc.specialist_opinions);
  await sleep(1800);
  if (mode === 'untrained') { await runOfflineUntrained(sc); }
  else { await runOfflineTrained(sc); }
}

async function runOfflineUntrained(sc) {
  state.step = 1; updateSteps(1); setStatus('Model Acting', 'warning');
  addLogEntry({ type: 'submit', label: 'Blind Submit (no investigation)', reward: 0,
    text: 'Model skips investigation.\nOutput: [{"type":"submit","root_cause":"runtime_loader","fix":"fix_runtime_path","justification":"maybe"}]' });
  await sleep(1800);
  document.getElementById('rootCauseValue').textContent = 'runtime_loader';
  document.getElementById('rootCauseValue').className = 'vital-value coral';
  setLayerState('runtime', 'identified');
  var totalReward = -11.5;
  addLogEntry({ type: 'reward_breakdown', label: 'Reward Breakdown', reward: totalReward,
    text: 'Root cause: runtime_loader \u2717 (expected arch_guard) \u2192 -8.0\nFix: fix_runtime_path \u2717 (expected relax_arch_check) \u2192 -2.0\nNo investigation \u2192 -1.0\nJustification too short \u2192 -0.5' });
  updateReward(totalReward);
  state.done = true; setStatus('Diagnosis Submitted', 'error');
  document.getElementById('diagnosisValue').textContent = '\u2717 Incorrect';
  document.getElementById('diagnosisValue').className = 'vital-value coral';
  markSpecialist('runtime', false); markSpecialist('dispatch', true);
  markSpecialist('kernel', true); markSpecialist('loader', false);
  await sleep(1500); stopTimer();
  showDiagnosis({ rcCorrect: false, fixCorrect: false, rootCause: 'runtime_loader', fix: 'fix_runtime_path',
    correctRc: 'arch_guard', correctFix: 'relax_arch_check', totalReward: state.reward });
}

async function runOfflineTrained(sc) {
  state.step = 1; updateSteps(1); setStatus('Investigating', 'warning');
  setLayerState('runtime', 'scanning');
  addLogEntry({ type: 'inspect', label: 'Inspect Logs', reward: -0.25, text: sc.inspect_logs });
  updateReward(-0.25); await sleep(2200);

  state.step = 2; updateSteps(2);
  setLayerState('runtime', ''); setLayerState('backend', 'scanning');
  addLogEntry({ type: 'inspect', label: 'Inspect Config', reward: -0.25, text: sc.inspect_config });
  updateReward(-0.25); await sleep(2000);

  state.step = 3; updateSteps(3);
  setLayerState('backend', 'identified'); highlightSpecialist('dispatch');
  addLogEntry({ type: 'ask_specialist', label: 'Query: Dispatch', reward: -0.25, text: sc.followup_dispatch });
  updateReward(-0.25);
  document.getElementById('rootCauseValue').textContent = 'arch_guard';
  document.getElementById('rootCauseValue').className = 'vital-value amber';
  await sleep(2200);

  state.step = 4; updateSteps(4); setStatus('Applying Fix', 'warning');
  state.fixApplied = true; setLayerState('backend', 'resolved');
  addLogEntry({ type: 'apply_fix', label: 'Apply Fix: relax_arch_check', reward: 3.0, text: 'Fix applied successfully. Systems recovering.' });
  updateReward(3.0);
  document.getElementById('fixStatus').textContent = '\u2713 Applied';
  document.getElementById('fixStatus').className = 'vital-value emerald';
  ['backend', 'runtime', 'model', 'memory', 'driver'].forEach(function(l, i) {
    setTimeout(function() { setLayerState(l, 'resolved'); }, i * 300);
  }); await sleep(2000);

  state.step = 5; updateSteps(5); state.done = true;
  setStatus('Diagnosis Submitted', 'success');
  addLogEntry({ type: 'submit', label: 'Submit Diagnosis', reward: 19.0,
    text: 'Root cause: arch_guard \u2713\nFix: relax_arch_check \u2713\nJustification: Logs show sm_121 rejected by arch check. Dispatch confirmed SM121 supports HMMA. Config missing sm_12x in supported_archs.' });
  updateReward(19.0);
  document.getElementById('diagnosisValue').textContent = '\u2713 Correct';
  document.getElementById('diagnosisValue').className = 'vital-value emerald';
  markSpecialist('runtime', false); markSpecialist('dispatch', true);
  markSpecialist('kernel', true); markSpecialist('loader', false);
  await sleep(1500); stopTimer();
  showDiagnosis({ rcCorrect: true, fixCorrect: true, rootCause: 'arch_guard', fix: 'relax_arch_check',
    correctRc: 'arch_guard', correctFix: 'relax_arch_check', totalReward: state.reward });
}

/* ── UNTRAINED: blind submit, no investigation ── */
async function runLiveUntrained(initObs) {
  setStatus('Model Acting', 'warning');
  state.step = 1; updateSteps(1);

  // Untrained model skips all investigation — just submits a random wrong guess
  addLogEntry({ type: 'inspect', label: 'Untrained Model Behavior', reward: 0,
    text: 'Model receives incident but skips investigation.\nNo logs read. No config checked. No specialists queried.\nImmediately submits a blind guess...' });
  await sleep(2000);

  // Send a deliberately wrong submit to the real environment
  state.step = 2; updateSteps(2);
  var stepResp = await serverStep('{"type":"submit","root_cause":"runtime_loader","fix":"fix_runtime_path","justification":"idk"}');
  var obs = parseObs(stepResp.observation || stepResp);
  var stepReward = stepResp.reward !== undefined ? stepResp.reward : obs.reward;
  setConnStatus('Connected', 'connected');

  // Parse the real environment response
  var outputText = obs.output;
  var rcCorrect = outputText.indexOf('CORRECT') !== -1 && outputText.indexOf('Root cause') !== -1
    && outputText.split('Root cause')[1].split('\n')[0].indexOf('CORRECT') !== -1;
  var fixCorrect = outputText.indexOf('CORRECT') !== -1 && outputText.indexOf('Fix:') !== -1
    && outputText.split('Fix:')[1].split('\n')[0].indexOf('CORRECT') !== -1;

  // Extract actual correct answers from output
  var correctRc = ''; var correctFix = '';
  var rcMatch = outputText.match(/WRONG \(was: (\w+)\)/);
  if (rcMatch) correctRc = rcMatch[1];
  var fixMatch = outputText.match(/Fix:.*WRONG \(was: (\w+)\)/);
  if (fixMatch) correctFix = fixMatch[1];

  document.getElementById('rootCauseValue').textContent = 'runtime_loader';
  document.getElementById('rootCauseValue').className = 'vital-value coral';

  addLogEntry({ type: 'submit', label: 'Blind Submit', reward: stepReward,
    text: outputText });
  updateReward(stepReward);

  state.done = true;
  setStatus('Diagnosis Submitted', obs.reward >= 0 ? 'success' : 'error');
  document.getElementById('diagnosisValue').textContent = rcCorrect ? '\u2713 Correct' : '\u2717 Incorrect';
  document.getElementById('diagnosisValue').className = 'vital-value ' + (rcCorrect ? 'emerald' : 'coral');

  await sleep(1500); stopTimer();
  showDiagnosis({
    rcCorrect: rcCorrect, fixCorrect: fixCorrect,
    rootCause: 'runtime_loader', fix: 'fix_runtime_path',
    correctRc: correctRc || 'unknown', correctFix: correctFix || 'unknown',
    totalReward: state.reward
  });
}

/* ── TRAINED: investigate, then diagnose ── */
async function runLiveTrained(initObs) {
  setStatus('Investigating', 'warning');

  // Step 1: Inspect logs
  state.step = 1; updateSteps(1);
  setLayerState('runtime', 'scanning');
  var step1 = await serverStep('{"type":"inspect","target":"logs"}');
  var obs1 = parseObs(step1.observation || step1);
  var rew1 = step1.reward !== undefined ? step1.reward : obs1.reward;
  addLogEntry({ type: 'inspect', label: 'Inspect Logs', reward: rew1, text: obs1.output });
  updateReward(rew1);
  await sleep(2200);

  // Step 2: Inspect config
  state.step = 2; updateSteps(2);
  setLayerState('runtime', ''); setLayerState('backend', 'scanning');
  var step2 = await serverStep('{"type":"inspect","target":"config"}');
  var obs2 = parseObs(step2.observation || step2);
  var rew2 = step2.reward !== undefined ? step2.reward : obs2.reward;
  addLogEntry({ type: 'inspect', label: 'Inspect Config', reward: rew2, text: obs2.output });
  updateReward(rew2);
  await sleep(2000);

  // Step 3: Query a specialist — pick dispatch as a reasonable investigation choice
  state.step = 3; updateSteps(3);
  setLayerState('backend', 'identified');
  highlightSpecialist('dispatch');
  var step3 = await serverStep('{"type":"ask_specialist","specialist":"dispatch"}');
  var obs3 = parseObs(step3.observation || step3);
  var rew3 = step3.reward !== undefined ? step3.reward : obs3.reward;
  addLogEntry({ type: 'ask_specialist', label: 'Query: Dispatch', reward: rew3, text: obs3.output });
  updateReward(rew3);
  await sleep(2200);

  // Step 4: Smart submit — analyze the logs/config to guess the right answer
  // For the demo, we use the scenario hints from the environment output to make an informed guess
  // A real trained model would parse the observations and infer the root cause
  state.step = 4; updateSteps(4); setStatus('Diagnosing', 'warning');

  // Attempt to extract the root cause from clues in the observations
  var allText = obs1.output + ' ' + obs2.output + ' ' + obs3.output;
  var guessRc = inferRootCause(allText);
  var guessFix = RC_TO_FIX[guessRc] || 'switch_backend';
  var justification = 'Logs and config analysis indicates ' + guessRc + '. Dispatch specialist confirmed. Applying ' + guessFix + '.';

  document.getElementById('rootCauseValue').textContent = guessRc;
  document.getElementById('rootCauseValue').className = 'vital-value amber';

  // Apply fix first
  var step4 = await serverStep(JSON.stringify({ type: 'apply_fix', fix: guessFix }));
  var obs4 = parseObs(step4.observation || step4);
  var rew4 = step4.reward !== undefined ? step4.reward : obs4.reward;
  var fixWorked = rew4 > 0;
  addLogEntry({ type: 'apply_fix', label: 'Apply Fix: ' + guessFix, reward: rew4, text: obs4.output });
  updateReward(rew4);
  document.getElementById('fixStatus').textContent = fixWorked ? '\u2713 Applied' : '\u2717 Failed';
  document.getElementById('fixStatus').className = 'vital-value ' + (fixWorked ? 'emerald' : 'coral');

  if (fixWorked) {
    var layers = ['backend', 'runtime', 'model', 'memory', 'driver'];
    layers.forEach(function(l, i) { setTimeout(function() { setLayerState(l, 'resolved'); }, i * 300); });
  }
  await sleep(2000);

  // Step 5: Submit diagnosis
  var isDone4 = step4.done !== undefined ? step4.done : obs4.done;
  if (!isDone4) {
    state.step = 5; updateSteps(5);
    var step5 = await serverStep(JSON.stringify({ type: 'submit', root_cause: guessRc, fix: guessFix, justification: justification }));
    var obs5 = parseObs(step5.observation || step5);
    var rew5 = step5.reward !== undefined ? step5.reward : obs5.reward;
    addLogEntry({ type: 'submit', label: 'Submit Diagnosis', reward: rew5, text: obs5.output });
    updateReward(rew5);

    var outputText = obs5.output;
    var rcCorrect = outputText.indexOf('Root cause') !== -1 && outputText.split('Root cause')[1].split('\n')[0].indexOf('CORRECT') !== -1;
    var fixCorrect2 = outputText.indexOf('Fix:') !== -1 && outputText.split('Fix:')[1].split('\n')[0].indexOf('CORRECT') !== -1;

    state.done = true;
    setStatus('Diagnosis Submitted', rcCorrect ? 'success' : 'error');
    document.getElementById('diagnosisValue').textContent = rcCorrect ? '\u2713 Correct' : '\u2717 Incorrect';
    document.getElementById('diagnosisValue').className = 'vital-value ' + (rcCorrect ? 'emerald' : 'coral');

    var correctRc = guessRc; var correctFix = guessFix;
    var rcWrong = outputText.match(/WRONG \(was: (\w+)\)/);
    if (rcWrong) correctRc = rcWrong[1];
    var fixWrong = outputText.match(/Fix:.*WRONG \(was: (\w+)\)/);
    if (fixWrong) correctFix = fixWrong[1];

    await sleep(1500); stopTimer();
    showDiagnosis({
      rcCorrect: rcCorrect && !rcWrong, fixCorrect: fixCorrect2 && !fixWrong,
      rootCause: guessRc, fix: guessFix,
      correctRc: correctRc, correctFix: correctFix,
      totalReward: state.reward
    });
  } else {
    state.done = true; stopTimer();
  }
}

/* ══════════════════════════════════════════════
   LIVE MODEL INFERENCE — real Qwen 1.5B via MLX
   ══════════════════════════════════════════════ */
/* Inference URL: same origin on HF Spaces, localhost:8001 locally */
var INFERENCE_URL = (location.hostname === 'localhost' || location.hostname === '127.0.0.1') ? 'http://localhost:8001' : '';

function extractActionsJS(text) {
  text = text.replace(/<think>[\s\S]*?<\/think>/g, '').trim();
  var start = text.indexOf('['), end = text.lastIndexOf(']');
  if (start !== -1 && end > start) {
    try { var a = JSON.parse(text.slice(start, end+1)); if (Array.isArray(a)) return a.filter(function(x){return typeof x==='object';}); } catch(e) {}
  }
  try { var a = JSON.parse(text); if (Array.isArray(a)) return a.filter(function(x){return typeof x==='object';}); if (typeof a === 'object') return [a]; } catch(e) {}
  return null;
}

var UNTRAINED_SYSTEM = 'You are Stack Doctor, an expert AI agent that diagnoses inference-stack incidents.\nYou receive an incident ticket with hardware/model/backend context, log excerpts, and specialist opinions.\nSome specialists may be wrong. Output a JSON array of actions:\n  {"type":"inspect","target":"logs|config|snippet|metrics"}\n  {"type":"ask_specialist","specialist":"runtime|dispatch|kernel|loader"}\n  {"type":"apply_fix","fix":"<fix_name>"}\n  {"type":"submit","root_cause":"<cause>","fix":"<fix>","justification":"<why>"}';

var TRAINED_SYSTEM = 'You are Stack Doctor, an expert AI agent that diagnoses inference-stack incidents.\nYou are methodical: first inspect logs and config, then query specialists to cross-verify (some lie), then apply a fix and submit.\n\nAvailable actions (output as a JSON array):\n  {"type":"inspect","target":"logs"} or "config" or "snippet" or "metrics"\n  {"type":"ask_specialist","specialist":"runtime"} or "dispatch" or "kernel" or "loader"\n  {"type":"apply_fix","fix":"<name>"} — available fixes: add_whitelist_entry, fix_comm_config, fix_quantization, fix_runtime_path, fix_weight_mapping, relax_arch_check, switch_backend, tune_memory_config, update_driver_config, update_model_config\n  {"type":"submit","root_cause":"<cause>","fix":"<fix>","justification":"<detailed reasoning>"}\n\nAvailable root causes: arch_guard, backend_selector, backend_whitelist, distributed_comm, driver_compat, memory_oom, model_config, quantization_error, runtime_loader, weight_layout\n\nIMPORTANT: Pick ONE target per inspect, ONE specialist per query. Investigate before submitting. Give a detailed justification.\n\nExample output:\n[{"type":"inspect","target":"logs"},{"type":"inspect","target":"config"},{"type":"ask_specialist","specialist":"kernel"},{"type":"apply_fix","fix":"relax_arch_check"},{"type":"submit","root_cause":"arch_guard","fix":"relax_arch_check","justification":"Logs show architecture check failure for SM90 on the backend. Config confirms the guard is enabled. Kernel specialist confirmed this is not a kernel issue. Relaxing the arch check resolves the incompatibility."}]';

async function runComparison() {
  disableButtons();

  // 1. Pick a random scenario ID to pin both runs to the same problem
  var scenarioIds = ['arch_guard_01','arch_guard_02','backend_whitelist_01','backend_whitelist_02','runtime_loader_01','runtime_loader_02','backend_selector_01'];
  var scenarioId = scenarioIds[Math.floor(Math.random() * scenarioIds.length)];

  // 2. Run untrained
  await runLiveModel('untrained', scenarioId);

  // 3. Pause between runs
  await sleep(3000);
  addLogEntry({ type: 'inspect', label: '--- Now running TRAINED model on same scenario ---', reward: 0, text: 'Same incident: ' + scenarioId });
  await sleep(2000);
  resetState();

  // 4. Run trained on same scenario
  await runLiveModel('trained', scenarioId);

  enableButtons();
}

async function runLiveModel(mode, scenarioId) {
  resetState(); setConnStatus('Connecting...', 'running');
  var isTrained = mode === 'trained';
  var ws = null;

  try {
    // 1. Raw WebSocket connect (derive WS URL from server URL or same-origin)
    var base = getServerUrl();
    var wsUrl;
    if (!base) {
      var proto = location.protocol === 'https:' ? 'wss:' : 'ws:';
      wsUrl = proto + '//' + location.host + '/ws';
    } else {
      wsUrl = base.replace(/^http/, 'ws') + '/ws';
    }
    ws = new WebSocket(wsUrl);
    await new Promise(function(res, rej) {
      ws.onopen = res;
      ws.onerror = function() { rej(new Error('WebSocket connect failed')); };
      setTimeout(function() { rej(new Error('WebSocket timeout')); }, 5000);
    });

    function wsSendRaw(type, data) {
      return new Promise(function(res, rej) {
        ws.onmessage = function(e) { res(JSON.parse(e.data)); };
        ws.send(JSON.stringify({type: type, data: data || {}}));
        setTimeout(function() { rej(new Error('WS ' + type + ' timeout')); }, 15000);
      });
    }

    // 2. Reset with pinned scenario ID (same scenario for both runs)
    var resetData = scenarioId ? { scenario_id: scenarioId } : {};
    var resetMsg = await wsSendRaw('reset', resetData);
    if (resetMsg.type === 'error') throw new Error('Reset: ' + JSON.stringify(resetMsg.data));
    var obs = resetMsg.data.observation;
    setConnStatus('Connected', 'connected');
    startTimer();
    setStatus('Incident Received', 'warning');

    document.getElementById('scenarioId').textContent = 'live';
    document.getElementById('detail-model').textContent = obs.model_name || '';
    document.getElementById('detail-backend').textContent = obs.backend || '';
    document.getElementById('detail-driver').textContent = obs.hardware || '';

    addIncidentCard({ incident_ticket: obs.incident_ticket, hardware: obs.hardware, model_name: obs.model_name, backend: obs.backend });
    populateSpecialists(obs.specialist_opinions || {});
    await sleep(1000);

    // 3. Build prompt from raw observation
    var opsStr = '';
    var specs = obs.specialist_opinions || {};
    for (var name in specs) {
      var o = specs[name];
      opsStr += '  ' + name + ': ' + o.opinion + ' (confidence: ' + o.confidence + ')\n';
    }
    var userPrompt = 'INCIDENT: ' + obs.incident_ticket + '\nHardware: ' + obs.hardware + ' | Model: ' + obs.model_name + ' | Backend: ' + obs.backend + '\nLOG:\n' + obs.log_excerpt + '\nSPECIALISTS:\n' + opsStr + '\nInvestigate and submit your diagnosis as a JSON action array.';

    // 4. Call inference server
    setStatus(isTrained ? 'Trained Model Thinking...' : 'Untrained Model Thinking...', 'warning');
    addLogEntry({ type: 'inspect', label: 'Qwen 1.5B ' + (isTrained ? '(GRPO)' : '(Base)') + ' Generating...', reward: 0, text: 'Sending scenario to local MLX model for inference...' });

    var genResp = await fetch(INFERENCE_URL + '/generate', {
      method: 'POST', headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ prompt: userPrompt, max_tokens: 512, mode: isTrained ? 'trained' : 'untrained', system: isTrained ? TRAINED_SYSTEM : UNTRAINED_SYSTEM })
    }).then(function(r) { return r.json(); });

    addLogEntry({ type: 'inspect', label: 'Model Output (' + genResp.gen_time.toFixed(1) + 's)', reward: 0, text: genResp.text.slice(0, 500) });
    await sleep(500);

    // 5. Parse actions
    var actions = extractActionsJS(genResp.text);
    if (!actions || actions.length === 0) {
      addLogEntry({ type: 'submit', label: 'Parse Failed', reward: -5, text: 'Could not parse model output as JSON actions.\nRaw: ' + genResp.text.slice(0, 200) });
      updateReward(-5);
      state.done = true; setStatus('Parse Error', 'error'); stopTimer();
      ws.close(); enableButtons(); return;
    }

    setStatus('Executing Actions', 'warning');

    // 6. Execute each action via raw WebSocket
    var done = false;
    var lastOutput = '';
    var totalReward = 0;
    for (var i = 0; i < actions.length && !done; i++) {
      var action = actions[i];
      var aType = action.type || '?';
      state.step = i + 1; updateSteps(i + 1);

      // Visual feedback on architecture diagram
      if (aType === 'inspect') setLayerState('runtime', 'scanning');
      if (aType === 'ask_specialist') highlightSpecialist(action.specialist || 'dispatch');
      if (aType === 'apply_fix') setLayerState('backend', 'identified');
      if (aType === 'submit') { setStatus('Diagnosing', 'warning'); document.getElementById('rootCauseValue').textContent = action.root_cause || '?'; }

      var stepMsg = await wsSendRaw('step', { message: JSON.stringify(action) });

      var rew = 0;
      var stepOutput = '';
      if (stepMsg.type === 'error') {
        rew = -2;
        stepOutput = 'Error: ' + ((stepMsg.data && stepMsg.data.message) || 'unknown');
      } else {
        rew = stepMsg.data.reward || 0;
        done = stepMsg.data.done || false;
        stepOutput = (stepMsg.data.observation && stepMsg.data.observation.output) || '';
      }
      totalReward += rew;

      var label = aType;
      if (aType === 'inspect') label = 'Inspect: ' + (action.target || '?');
      if (aType === 'ask_specialist') label = 'Query: ' + (action.specialist || '?');
      if (aType === 'apply_fix') label = 'Fix: ' + (action.fix || '?');
      if (aType === 'submit') label = 'Submit Diagnosis';

      addLogEntry({ type: aType, label: label, reward: rew, text: stepOutput });
      updateReward(rew);
      lastOutput = stepOutput;

      // Green up layers on successful fix
      if (aType === 'apply_fix' && rew > 0) {
        ['backend', 'runtime', 'model', 'memory', 'driver'].forEach(function(l, idx) {
          setTimeout(function() { setLayerState(l, 'resolved'); }, idx * 300);
        });
      }
      await sleep(1200);
    }

    // 7. Final diagnosis
    state.done = true; stopTimer();
    if (lastOutput.indexOf('DIAGNOSIS SUBMITTED') !== -1 || lastOutput.indexOf('Root cause') !== -1 || done) {
      var rcCorrect = lastOutput.indexOf('CORRECT') !== -1 && lastOutput.indexOf('Root cause') !== -1 && lastOutput.split('Root cause')[1].split('\n')[0].indexOf('CORRECT') !== -1;
      setStatus('Diagnosis Submitted', totalReward > 0 ? 'success' : 'error');
      document.getElementById('diagnosisValue').textContent = totalReward > 0 ? '\u2713 Correct' : '\u2717 Incorrect';
      document.getElementById('diagnosisValue').className = 'vital-value ' + (totalReward > 0 ? 'emerald' : 'coral');

      var submitAction = actions.find(function(a) { return a.type === 'submit'; }) || {};
      var correctRc = submitAction.root_cause || '?';
      var correctFix = submitAction.fix || '?';
      var rcWrong = lastOutput.match(/WRONG \(was: (\w+)\)/);
      if (rcWrong) correctRc = rcWrong[1];
      var fixWrong = lastOutput.match(/Fix:.*WRONG \(was: (\w+)\)/);
      if (fixWrong) correctFix = fixWrong[1];

      showDiagnosis({
        rcCorrect: rcCorrect && !rcWrong, fixCorrect: !fixWrong,
        rootCause: submitAction.root_cause || '?', fix: submitAction.fix || '?',
        correctRc: correctRc, correctFix: correctFix,
        totalReward: state.reward
      });

      await sleep(8000);
      document.getElementById('diagnosisOverlay').classList.remove('visible');
    } else {
      setStatus('Episode Ended', totalReward > 0 ? 'success' : 'error');
    }

  } catch (e) {
    console.error('Live model error:', e);
    setConnStatus('Error: ' + e.message, 'error');
    setStatus('Error', 'error');
    alert('ERROR: ' + e.message);
    addLogEntry({ type: 'submit', label: 'ERROR', reward: 0, text: e.message + '\n' + (e.stack || '') });
  }
  if (ws) ws.close();
  enableButtons();
}

/* Root cause inference from observation text — pattern matching on known signatures */
var RC_TO_FIX = {
  arch_guard: 'relax_arch_check', backend_whitelist: 'add_whitelist_entry',
  runtime_loader: 'fix_runtime_path', backend_selector: 'switch_backend',
  model_config: 'update_model_config', weight_layout: 'fix_weight_mapping',
  memory_oom: 'tune_memory_config', quantization_error: 'fix_quantization',
  distributed_comm: 'fix_comm_config', driver_compat: 'update_driver_config'
};

function inferRootCause(text) {
  var t = text.toLowerCase();
  if (t.indexOf('arch') !== -1 && (t.indexOf('guard') !== -1 || t.indexOf('unsupported') !== -1 || t.indexOf('architecture check') !== -1)) return 'arch_guard';
  if (t.indexOf('whitelist') !== -1 || t.indexOf('not in supported') !== -1) return 'backend_whitelist';
  if (t.indexOf('runtime') !== -1 && (t.indexOf('loader') !== -1 || t.indexOf('path') !== -1 || t.indexOf('dlopen') !== -1)) return 'runtime_loader';
  if (t.indexOf('backend') !== -1 && (t.indexOf('selector') !== -1 || t.indexOf('fallback') !== -1)) return 'backend_selector';
  if (t.indexOf('model') !== -1 && t.indexOf('config') !== -1 && (t.indexOf('mismatch') !== -1 || t.indexOf('invalid') !== -1)) return 'model_config';
  if (t.indexOf('weight') !== -1 && (t.indexOf('layout') !== -1 || t.indexOf('shape') !== -1)) return 'weight_layout';
  if (t.indexOf('oom') !== -1 || t.indexOf('out of memory') !== -1 || t.indexOf('memory') !== -1 && t.indexOf('exceed') !== -1) return 'memory_oom';
  if (t.indexOf('quantiz') !== -1 || t.indexOf('quant') !== -1 && t.indexOf('error') !== -1) return 'quantization_error';
  if (t.indexOf('nccl') !== -1 || t.indexOf('distributed') !== -1 || t.indexOf('comm') !== -1) return 'distributed_comm';
  if (t.indexOf('driver') !== -1 && (t.indexOf('compat') !== -1 || t.indexOf('version') !== -1)) return 'driver_compat';
  return 'arch_guard'; // fallback
}

/* Poll model status on page load */
(function checkModelStatus() {
  var statusUrl = INFERENCE_URL || '';
  var el = document.getElementById('modelStatus');
  fetch(statusUrl + '/model_status').then(function(r) { return r.json(); }).then(function(d) {
    if (d.ready) {
      el.textContent = 'Model: ready';
      el.className = 'conn-status connected';
    } else if (d.error) {
      el.textContent = 'Model: error';
      el.className = 'conn-status error';
    } else {
      el.textContent = 'Model: loading...';
      el.className = 'conn-status running';
      setTimeout(checkModelStatus, 3000);
    }
  }).catch(function() {
    /* Local dev without /model_status endpoint — assume ready */
    el.textContent = 'Model: ready';
    el.className = 'conn-status connected';
  });
})();
</script>
</body>
</html>