Updated frontend

frontend/public/favicon.svg

@@ -1,11 +1,4 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" fill="none">
-  <defs>
-    <linearGradient id="g" x1="0%" y1="0%" x2="100%" y2="100%">
-      <stop offset="0%" stop-color="#1793d1"/>
-      <stop offset="100%" stop-color="#0f6ea8"/>
-    </linearGradient>
-  </defs>
-  <rect width="64" height="64" rx="14" fill="#0d1117"/>
-  <path d="M32 8L12 52h10l10-22 10 22h10L32 8z" fill="url(#g)"/>
-  <circle cx="32" cy="38" r="3" fill="#0d1117"/>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
+  <rect width="32" height="32" rx="4" fill="#1793D1"/>
+  <text x="16" y="23" text-anchor="middle" font-family="sans-serif" font-weight="bold" font-size="20" fill="white">A</text>
 </svg>