Restore Foundation to Arms.tsx with external link

cgen-3f06ed58681046a5b084b95b0dfbd308

client/pages/Arms.tsx

@@ -64,6 +64,19 @@ const ARMS: Arm[] = [
     shadowColor: "shadow-blue-500/50",
     glowColor: "rgba(59, 130, 246, 0.3)",
   },
+  {
+    id: "foundation",
+    label: "Foundation",
+    color: "#EF4444",
+    bgGradient: "from-red-600 to-red-400",
+    textColor: "text-red-400",
+    href: "https://aethex.foundation",
+    icon: "https://cdn.builder.io/api/v1/image/assets%2Ffc53d607e21d497595ac97e0637001a1%2Fc02cb1bf5056479bbb3ea4bd91f0d472?format=webp&width=800",
+    tip: "Community & education initiatives",
+    shadowColor: "shadow-red-500/50",
+    glowColor: "rgba(239, 68, 68, 0.3)",
+    external: true,
+  },
   {
     id: "devlink",
     label: "Dev-Link",