feat: add card skins support

apps/web/components/faces/circles.tsx

@@ -0,0 +1,13 @@
+import type { CardFaceProps } from "./types";
+
+/** 卡面：光泽 + 装饰圆形 */
+export function CirclesFace(_: CardFaceProps) {
+  return (
+    <>
+      <div className="absolute inset-0 bg-linear-to-tr from-white/20 via-transparent to-transparent" />
+      <div className="absolute -right-8 -top-8 size-44 rounded-full bg-white/10" />
+      <div className="absolute right-4 -bottom-12 size-36 rounded-full bg-white/[0.07]" />
+      <div className="absolute -left-6 -bottom-4 size-24 rounded-full bg-black/10" />
+    </>
+  );
+}