Redesign PWA icons with bold crossed swords.

Thicker filled shapes read clearly on home screens and Android themed icons.

Co-authored-by: Cursor <cursoragent@cursor.com>

static/icon.svg

@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
+  <rect width="512" height="512" fill="#1a1d27"/>
+  <rect x="20" y="20" width="472" height="472" rx="104" fill="#232735"/>
+
+  <g transform="translate(256 256)">
+    <g transform="rotate(-45)">
+      <rect x="-18" y="-168" width="36" height="228" rx="10" fill="#6c8cff"/>
+      <rect x="-42" y="48" width="84" height="16" rx="5" fill="#8ba4ff"/>
+      <rect x="-14" y="64" width="28" height="44" rx="6" fill="#4a62b3"/>
+      <circle cx="0" cy="118" r="16" fill="#6c8cff"/>
+    </g>
+    <g transform="rotate(45)">
+      <rect x="-18" y="-168" width="36" height="228" rx="10" fill="#6c8cff"/>
+      <rect x="-42" y="48" width="84" height="16" rx="5" fill="#8ba4ff"/>
+      <rect x="-14" y="64" width="28" height="44" rx="6" fill="#4a62b3"/>
+      <circle cx="0" cy="118" r="16" fill="#6c8cff"/>
+    </g>
+    <circle cx="0" cy="0" r="24" fill="#4a62b3"/>
+    <circle cx="0" cy="0" r="14" fill="#8ba4ff"/>
+  </g>
+</svg>