fix: make model-card click reliable and remove Tailwind CDN warning

- Use encoded model key in data attribute to avoid lookup mismatch
- Decode key on click before resolving showByModel data
- Guard localStorage writes with try/catch to avoid silent UI failures
- Scroll details section into view when a card is clicked
- Remove tailwindcdn script from template (use compiled CSS only)

app/web/templates/index.html

@@ -7,8 +7,6 @@
     <link rel="icon" href="/favicon.ico" sizes="any">
     <!-- Tailwind CSS (compiled for production) -->
     <link rel="stylesheet" href="/static/css/output.css">
-    <!-- Fallback CDN for development (if output.css not available) -->
-    <script src="https://cdn.tailwindcss.com"></script>
     <style>
         @keyframes spin {
             to { transform: rotate(360deg); }