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CreativeEngineer Claude Opus 4.6 commited on
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8d69cc6
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1 Parent(s): 2348d3e

feat: add HF Space landing page, revert to 2 reward functions

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- Add HTML landing page at / showing task, constraints, and API docs
- Revert notebook to format + environment reward (env already decomposes
feasibility and objective internally via _compute_reward)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Files changed (1) hide show
  1. server/app.py +75 -0
server/app.py CHANGED
@@ -1,5 +1,6 @@
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  from __future__ import annotations
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  from openenv.core import create_fastapi_app
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  from fusion_lab.models import StellaratorAction, StellaratorObservation
@@ -13,6 +14,80 @@ app = create_fastapi_app(
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  )
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  @app.get("/task")
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  def task_summary() -> dict[str, object]:
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  return {
 
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  from __future__ import annotations
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+ from fastapi.responses import HTMLResponse
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  from openenv.core import create_fastapi_app
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  from fusion_lab.models import StellaratorAction, StellaratorObservation
 
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  )
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+ @app.get("/", response_class=HTMLResponse)
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+ def landing_page() -> str:
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+ return """<!DOCTYPE html>
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+ <html lang="en">
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+ <head>
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+ <meta charset="utf-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1">
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+ <title>Fusion Design Lab</title>
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+ <style>
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+ * { margin: 0; padding: 0; box-sizing: border-box; }
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+ body { font-family: system-ui, -apple-system, sans-serif; background: #0a0e1a; color: #e0e0e0; min-height: 100vh; display: flex; align-items: center; justify-content: center; }
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+ .container { max-width: 720px; padding: 3rem 2rem; }
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+ h1 { font-size: 2.2rem; font-weight: 700; margin-bottom: 0.5rem; background: linear-gradient(135deg, #60a5fa, #a78bfa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
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+ .subtitle { color: #94a3b8; font-size: 1.1rem; margin-bottom: 2rem; }
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+ .card { background: #141926; border: 1px solid #1e293b; border-radius: 12px; padding: 1.5rem; margin-bottom: 1.2rem; }
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+ .card h2 { font-size: 1rem; color: #94a3b8; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.8rem; }
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+ .constraint { display: flex; justify-content: space-between; padding: 0.3rem 0; border-bottom: 1px solid #1e293b; }
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+ .constraint:last-child { border: none; }
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+ .constraint .name { color: #60a5fa; font-family: monospace; }
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+ .constraint .bound { color: #e0e0e0; font-family: monospace; }
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+ .endpoints { list-style: none; }
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+ .endpoints li { padding: 0.4rem 0; }
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+ .endpoints code { background: #1e293b; padding: 0.2rem 0.5rem; border-radius: 4px; font-size: 0.9rem; color: #a78bfa; }
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+ .endpoints .method { color: #4ade80; font-weight: 600; font-family: monospace; margin-right: 0.3rem; }
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+ .meta { display: flex; gap: 2rem; flex-wrap: wrap; }
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+ .meta-item { flex: 1; min-width: 140px; }
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+ .meta-item .value { font-size: 1.8rem; font-weight: 700; color: #60a5fa; }
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+ .meta-item .label { color: #64748b; font-size: 0.85rem; }
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+ a { color: #a78bfa; text-decoration: none; }
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+ a:hover { text-decoration: underline; }
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+ .footer { margin-top: 2rem; color: #475569; font-size: 0.85rem; text-align: center; }
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+ </style>
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+ </head>
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+ <body>
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+ <div class="container">
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+ <h1>Fusion Design Lab</h1>
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+ <p class="subtitle">OpenEnv P1 stellarator optimization environment powered by <code>constellaration</code></p>
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+
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+ <div class="card">
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+ <h2>Task</h2>
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+ <p style="margin-bottom:1rem;">Minimize <strong>max elongation</strong> of a stellarator boundary using 4 geometric knobs, subject to physics constraints.</p>
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+ <div class="meta">
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+ <div class="meta-item"><div class="value">6</div><div class="label">evaluation budget</div></div>
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+ <div class="meta-item"><div class="value">26</div><div class="label">discrete actions</div></div>
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+ <div class="meta-item"><div class="value">3</div><div class="label">field periods</div></div>
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+ </div>
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+ </div>
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+
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+ <div class="card">
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+ <h2>Constraints</h2>
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+ <div class="constraint"><span class="name">aspect_ratio</span><span class="bound">&le; 4.0</span></div>
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+ <div class="constraint"><span class="name">average_triangularity</span><span class="bound">&le; &minus;0.5</span></div>
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+ <div class="constraint"><span class="name">edge_iota_over_nfp</span><span class="bound">&ge; 0.3</span></div>
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+ </div>
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+
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+ <div class="card">
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+ <h2>API Endpoints</h2>
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+ <ul class="endpoints">
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+ <li><span class="method">GET</span> <code>/health</code> &mdash; liveness check</li>
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+ <li><span class="method">GET</span> <code>/task</code> &mdash; task specification</li>
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+ <li><span class="method">POST</span> <code>/reset</code> &mdash; start a new episode</li>
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+ <li><span class="method">POST</span> <code>/step</code> &mdash; execute an action</li>
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+ </ul>
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+ </div>
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+
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+ <div class="footer">
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+ <a href="https://github.com/jungdaesuh/fusion-design-lab">GitHub</a>
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+ &middot; OpenEnv Hackathon 2026
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+ </div>
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+ </div>
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+ </body>
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+ </html>"""
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+
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+
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  @app.get("/task")
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  def task_summary() -> dict[str, object]:
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  return {