feat: new "card fan" app icon — web favicon/PWA + Android adaptive

- Master SVGs + generator in scripts/icon/ (icon.svg full design, icon-foreground.svg
  cards-only for the Android adaptive layer, gen-icons.mjs via sharp).
- Web/PWA: regenerated favicon.ico (16/32/48), src/app/apple-icon.png, public/icon.svg,
  icon-192/512, icon-maskable-512; manifest now lists png + maskable icons.
- Android (Capacitor): ic_launcher / ic_launcher_round / ic_launcher_foreground for all
  densities + ic_launcher-playstore 512; adaptive background switched from flat white
  to a navy radial-gradient drawable (matches the icon), foreground = the gold card fan.

Design: navy field, gold rounded frame, three fanned cards with a gold spade —
on-brand with the in-app "Persian luxury" look.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

scripts/icon/icon-foreground.svg

@@ -0,0 +1,38 @@
+<svg width="1024" height="1024" viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg">
+  <defs>
+    <linearGradient id="gold" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#f6e4a0"/>
+      <stop offset="0.5" stop-color="#d4af37"/>
+      <stop offset="1" stop-color="#b8860b"/>
+    </linearGradient>
+    <linearGradient id="face" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#fffdf7"/>
+      <stop offset="1" stop-color="#f1e6cd"/>
+    </linearGradient>
+    <linearGradient id="navy" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#1d356a"/>
+      <stop offset="1" stop-color="#0a142e"/>
+    </linearGradient>
+  </defs>
+
+  <!-- the fanned cards, centered + scaled into the adaptive safe zone (~66%) -->
+  <g transform="translate(256 256) scale(0.82) translate(-256 -290)">
+    <g transform="rotate(-25 256 396)">
+      <rect x="182" y="180" width="148" height="210" rx="16" fill="url(#navy)" stroke="url(#gold)" stroke-width="4"/>
+      <rect x="198" y="196" width="116" height="178" rx="10" fill="none" stroke="#d4af37" stroke-width="2" opacity="0.45"/>
+      <path d="M256 250 l16 35 -16 35 -16 -35 z" fill="#d4af37" opacity="0.75"/>
+    </g>
+    <g transform="rotate(25 256 396)">
+      <rect x="182" y="180" width="148" height="210" rx="16" fill="url(#navy)" stroke="url(#gold)" stroke-width="4"/>
+      <rect x="198" y="196" width="116" height="178" rx="10" fill="none" stroke="#d4af37" stroke-width="2" opacity="0.45"/>
+      <path d="M256 250 l16 35 -16 35 -16 -35 z" fill="#d4af37" opacity="0.75"/>
+    </g>
+    <g transform="translate(0 -24)">
+      <rect x="181" y="178" width="150" height="212" rx="16" fill="url(#face)" stroke="url(#gold)" stroke-width="5"/>
+      <rect x="193" y="190" width="126" height="188" rx="10" fill="none" stroke="#d4af37" stroke-width="2"/>
+      <g transform="translate(256 268) scale(1.45)">
+        <path d="M0,-44 C0,-44 -42,-6 -42,16 C-42,30 -31,40 -18,40 C-11,40 -5,37 0,32 C-2,44 -10,52 -20,55 L20,55 C10,52 2,44 0,32 C5,37 11,40 18,40 C31,40 42,30 42,16 C42,-6 0,-44 0,-44 Z" fill="url(#gold)" stroke="#7a5a00" stroke-width="1.5"/>
+      </g>
+    </g>
+  </g>
+</svg>