feat(waf): 新增安全防护节点 security_check

基础特征检测九项可开关；默认开启路径穿越与文件包含；命中任意规则走 false。

frontend/app/(main)/waf/rules/editor/components/node-library.tsx

@@ -3,6 +3,7 @@ import {
   Fingerprint,
   Globe2,
   ScanSearch,
+  Shield,
   ShieldCheck,
 } from 'lucide-react';
 
@@ -18,6 +19,7 @@ const items = [
   { type: 'ip_match' as const, icon: Fingerprint },
   { type: 'geo_match' as const, icon: Globe2 },
   { type: 'ua_check' as const, icon: ScanSearch },
+  { type: 'security_check' as const, icon: Shield },
   { type: 'pow' as const, icon: ShieldCheck },
   { type: 'block' as const, icon: Ban },
 ] satisfies { type: AddableNodeType; icon: typeof Fingerprint }[];