Add touch controls and nginx Dockerfile for Coolify deploy

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

index.html

@@ -6,7 +6,7 @@
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <style>
   html, body { margin: 0; height: 100%; background: #10141c; display: grid; place-items: center; }
-  canvas { image-rendering: pixelated; width: min(96vw, calc(96vh * 16 / 9)); aspect-ratio: 16/9; }
+  canvas { image-rendering: pixelated; width: min(96vw, calc(96vh * 16 / 9)); aspect-ratio: 16/9; touch-action: none; }
   #hint { position: fixed; bottom: 8px; width: 100%; text-align: center;
           font: 12px monospace; color: #6b7688; }
 </style>