reemplazar icono sidebar por SVG custom, actualizar favicon

public/favicon.svg

@@ -1,4 +1,11 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
-  <rect width="32" height="32" rx="8" fill="#18181b"/>
-  <text x="16" y="22" text-anchor="middle" fill="#fafafa" font-size="18" font-weight="700" font-family="system-ui">A</text>
+  <rect width="32" height="32" rx="6" fill="#18181b"/>
+  <g transform="translate(4,4) scale(0.24)">
+    <g stroke="#fafafa" fill="none" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+      <circle cx="50" cy="50" r="21"/>
+    </g>
+    <g fill="#fafafa">
+      <path d="M136.673,14.297C136.568,17.373 139.093,16.403 139.111,14.264C140.189,12.008 142.848,3.574 148.455,3.204C164.702,2.132 153.11,17.893 147.586,27.552C142.829,35.869 164.837,68.368 155.611,70.821C136.139,75.999 140.766,37.723 135.674,45.662C134.259,47.868 120.815,68.827 113.563,69.827C81.746,74.21 87.352,32.261 103.298,15.327C116.64,1.16 121.972,-3.196 136.673,14.297ZM102.886,48.509C105.694,36.799 105.465,30.363 118.667,17.701C122.298,14.22 124.604,22.307 129.29,27.665C130.639,29.207 107.445,77.368 102.886,48.509Z" transform="matrix(0.707818,0,0,0.707818,-34.901465,23.75428)"></path>
+    </g>
+  </g>
 </svg>