style: 凭证类型清理——移除用户名密码/AK·SK/Kubeconfig 兼容项，仅保留发布所需 4 种

frontend/src/pages/CredentialManager.tsx

@@ -6,10 +6,8 @@ import {
   Copy,
   Trash2,
   Edit2,
-  Shield,
   GitBranch,
   Container,
-  Cloud,
   Boxes,
   Loader2,
   KeyRound,
@@ -28,10 +26,6 @@ const typeConfig: Record<string, { icon: typeof Key; label: string; color: strin
   docker: { icon: Container, label: 'Docker 认证', color: '#1a7f37', bg: '#dafbe1' },
   git: { icon: GitBranch, label: 'Git 仓库', color: '#8250df', bg: '#fbefff' },
   kubernetes: { icon: Boxes, label: 'Kubernetes', color: '#bc4c00', bg: '#fff1e5' },
-  // 旧类型仅作历史数据展示，不再提供新建
-  password: { icon: Shield, label: '用户名密码', color: '#9a6700', bg: '#fff8c5' },
-  kubeconfig: { icon: Key, label: 'Kubeconfig', color: '#bc4c00', bg: '#fff1e5' },
-  aksk: { icon: Cloud, label: 'AK/SK', color: '#0f766e', bg: '#ccfbf1' },
 };
 
 // 新建可选类型（发布流程所需：ssh / docker / git / kubernetes）