feat: 添加配置模块和更新管理员导航，优化钱包控制台加载逻辑

src/modules/config/config-subnav.tsx

@@ -0,0 +1,50 @@
+"use client";
+
+import Link from "next/link";
+import { usePathname } from "next/navigation";
+
+import { cn } from "@/lib/utils";
+
+const LINKS: { href: string; label: string; match?: "exact" | "prefix" }[] = [
+  { href: "/admin/config", label: "概览", match: "exact" },
+  { href: "/admin/config/plays", label: "玩法配置" },
+  { href: "/admin/config/odds", label: "赔率配置" },
+  { href: "/admin/config/rebate", label: "佣金 / 回水" },
+  { href: "/admin/config/risk-cap", label: "风控封顶" },
+];
+
+function linkActive(pathname: string, href: string, match: "exact" | "prefix"): boolean {
+  if (match === "exact") {
+    return pathname === href || pathname === `${href}/`;
+  }
+  return pathname === href || pathname.startsWith(`${href}/`);
+}
+
+export function ConfigSubNav() {
+  const pathname = usePathname();
+
+  return (
+    <nav
+      className="flex flex-wrap gap-2 border-b border-border pb-3 mb-6"
+      aria-label="运营配置子导航"
+    >
+      {LINKS.map(({ href, label, match = "prefix" }) => {
+        const active = linkActive(pathname, href, match);
+        return (
+          <Link
+            key={href}
+            href={href}
+            className={cn(
+              "rounded-md px-3 py-1.5 text-sm transition-colors",
+              active
+                ? "bg-primary text-primary-foreground"
+                : "bg-muted/60 text-muted-foreground hover:bg-muted hover:text-foreground",
+            )}
+          >
+            {label}
+          </Link>
+        );
+      })}
+    </nav>
+  );
+}