fix: AuditLogsPage暗色主题适配(20处) + 权限项前后端对齐(18→9项)

AuditLogsPage 暗色主题 P0 修复:
- ACTION_COLORS: bg-blue-100→bg-blue-500/15, text-blue-800→text-blue-400 等 8 项
- 表格容器: bg-white→dg-card, bg-gray-50→bg-[var(--dg-bg-tertiary)]
- 所有 text-gray-* → --dg-text-* 变量
- 所有 bg-gray-* → --dg-bg-* 变量
- 分隔线: divide-gray-100→divide-[var(--dg-border)]
- 分页按钮: 全部改用 dg 变量
- grep 验证: 零残留硬编码亮色

InstanceGroupPage 权限项对齐:
- 前端权限项从 18 个精简到 9 个，与后端 PERMISSION_ACTIONS 一致
- 查询: query:select, query:write
- 工单: ticket:create, ticket:approve, ticket:execute
- DDL: ddl:execute
- 运维: slowlog:view, backup:manage, instance:detail

frontend/src/pages/AuditLogsPage.tsx

@@ -20,14 +20,14 @@ interface AuditLogResponse {
 }
 
 const ACTION_COLORS: Record<string, string> = {
-  CREATE_TICKET: 'bg-blue-100 text-blue-800',
+  CREATE_TICKET: 'bg-blue-500/15 text-blue-400',
-  REVIEW_TICKET: 'bg-yellow-100 text-yellow-800',
+  REVIEW_TICKET: 'bg-yellow-500/15 text-yellow-400',
-  EXECUTE_TICKET: 'bg-green-100 text-green-800',
+  EXECUTE_TICKET: 'bg-green-500/15 text-green-400',
-  CREATE_INSTANCE: 'bg-purple-100 text-purple-800',
+  CREATE_INSTANCE: 'bg-purple-500/15 text-purple-400',
-  DELETE_INSTANCE: 'bg-red-100 text-red-800',
+  DELETE_INSTANCE: 'bg-red-500/15 text-red-400',
-  CREATE_USER: 'bg-indigo-100 text-indigo-800',
+  CREATE_USER: 'bg-indigo-500/15 text-indigo-400',
-  DELETE_USER: 'bg-red-100 text-red-800',
+  DELETE_USER: 'bg-red-500/15 text-red-400',
-  QUERY: 'bg-cyan-100 text-cyan-800',
+  QUERY: 'bg-cyan-500/15 text-cyan-400',
 };
 
 const TARGET_ICONS: Record<string, string> = {
@@ -75,8 +75,8 @@ export default function AuditLogsPage() {
   return (
     <div className="space-y-4">
       <div className="flex items-center justify-between">
-        <h2 className="text-xl font-semibold text-gray-800">审计日志</h2>
+        <h2 className="text-xl font-semibold text-[var(--dg-text-primary)]">审计日志</h2>
-        <span className="text-sm text-gray-500">共 {total} 条记录</span>
+        <span className="text-sm text-[var(--dg-text-muted)]">共 {total} 条记录</span>
       </div>
 
       {/* Filters */}
@@ -88,7 +88,7 @@ export default function AuditLogsPage() {
             className={`px-3 py-1 text-xs rounded-full transition-colors ${
               filterAction === action
                 ? 'bg-blue-600 text-white'
-                : 'bg-gray-100 text-gray-600 hover:bg-gray-200'
+                : 'bg-[var(--dg-bg-tertiary)] text-[var(--dg-text-secondary)] hover:bg-[var(--dg-bg-hover)]'
             }`}
           >
             {action || '全部'}
@@ -97,36 +97,36 @@ export default function AuditLogsPage() {
       </div>
 
       {/* Table */}
-      <div className="bg-white rounded-lg shadow-sm overflow-hidden">
+      <div className="dg-card rounded-lg overflow-hidden">
         <table className="w-full text-sm">
           <thead>
-            <tr className="bg-gray-50 text-gray-600">
+            <tr className="bg-[var(--dg-bg-tertiary)] text-[var(--dg-text-secondary)]">
               <th className="px-4 py-3 text-left font-medium">操作</th>
               <th className="px-4 py-3 text-left font-medium">目标</th>
               <th className="px-4 py-3 text-left font-medium">详情</th>
               <th className="px-4 py-3 text-left font-medium">时间</th>
             </tr>
           </thead>
-          <tbody className="divide-y divide-gray-100">
+          <tbody className="divide-y divide-[var(--dg-border)]">
             {loading ? (
-              <tr><td colSpan={4} className="px-4 py-8 text-center text-gray-400">加载中...</td></tr>
+              <tr><td colSpan={4} className="px-4 py-8 text-center text-[var(--dg-text-muted)]">加载中...</td></tr>
             ) : logs.length === 0 ? (
-              <tr><td colSpan={4} className="px-4 py-8 text-center text-gray-400">暂无审计日志</td></tr>
+              <tr><td colSpan={4} className="px-4 py-8 text-center text-[var(--dg-text-muted)]">暂无审计日志</td></tr>
             ) : (
               logs.map(log => (
-                <tr key={log.id} className="hover:bg-gray-50 transition-colors">
+                <tr key={log.id} className="hover:bg-[var(--dg-bg-hover)] transition-colors">
                   <td className="px-4 py-3">
-                    <span className={`inline-block px-2 py-0.5 rounded text-xs font-medium ${ACTION_COLORS[log.action] || 'bg-gray-100 text-gray-600'}`}>
+                    <span className={`inline-block px-2 py-0.5 rounded text-xs font-medium ${ACTION_COLORS[log.action] || 'bg-[var(--dg-bg-tertiary)] text-[var(--dg-text-secondary)]'}`}>
                       {log.action}
                     </span>
                   </td>
                   <td className="px-4 py-3">
                     <span className="mr-1">{TARGET_ICONS[log.target_type] || '📌'}</span>
-                    <span className="text-gray-600">{log.target_type}</span>
+                    <span className="text-[var(--dg-text-secondary)]">{log.target_type}</span>
-                    {log.target_id && <span className="text-gray-400 ml-1">#{log.target_id}</span>}
+                    {log.target_id && <span className="text-[var(--dg-text-muted)] ml-1">#{log.target_id}</span>}
                   </td>
-                  <td className="px-4 py-3 text-gray-500 max-w-md truncate">{log.detail || '-'}</td>
+                  <td className="px-4 py-3 text-[var(--dg-text-muted)] max-w-md truncate">{log.detail || '-'}</td>
-                  <td className="px-4 py-3 text-gray-400 whitespace-nowrap">{formatDate(log.created_at)}</td>
+                  <td className="px-4 py-3 text-[var(--dg-text-muted)] whitespace-nowrap">{formatDate(log.created_at)}</td>
                 </tr>
               ))
             )}
@@ -140,15 +140,15 @@ export default function AuditLogsPage() {
           <button
             onClick={() => setPage(p => Math.max(1, p - 1))}
             disabled={page <= 1}
-            className="px-3 py-1 rounded bg-gray-100 text-gray-600 disabled:opacity-50"
+            className="px-3 py-1 rounded bg-[var(--dg-bg-tertiary)] text-[var(--dg-text-secondary)] disabled:opacity-50"
           >
             上一页
           </button>
-          <span className="px-3 py-1 text-gray-500">{page} / {totalPages}</span>
+          <span className="px-3 py-1 text-[var(--dg-text-muted)]">{page} / {totalPages}</span>
           <button
             onClick={() => setPage(p => Math.min(totalPages, p + 1))}
             disabled={page >= totalPages}
-            className="px-3 py-1 rounded bg-gray-100 text-gray-600 disabled:opacity-50"
+            className="px-3 py-1 rounded bg-[var(--dg-bg-tertiary)] text-[var(--dg-text-secondary)] disabled:opacity-50"
           >
             下一页
           </button>

frontend/src/pages/InstanceGroupPage.tsx

@@ -6,25 +6,13 @@ import { instanceApi } from '@/api/instance';
 import { userApi } from '@/api/user';
 import { useActionPermission } from '@/hooks/useAuth';
 
-// 权限预设
+// 权限项 — 与后端 PERMISSION_ACTIONS 保持一致
 var PERMISSION_CATEGORIES = [
   {
     label: '查询权限',
     items: [
       { code: 'query:select', name: 'SELECT 查询' },
-      { code: 'query:insert', name: 'INSERT 插入' },
+      { code: 'query:write', name: '写入操作 (INSERT/UPDATE/DELETE)' },
-      { code: 'query:update', name: 'UPDATE 更新' },
-      { code: 'query:delete', name: 'DELETE 删除' },
-    ],
-  },
-  {
-    label: 'DDL 权限',
-    items: [
-      { code: 'ddl:create_table', name: '创建表' },
-      { code: 'ddl:alter_table', name: '修改表' },
-      { code: 'ddl:drop_table', name: '删除表' },
-      { code: 'ddl:create_index', name: '创建索引' },
-      { code: 'ddl:drop_index', name: '删除索引' },
     ],
   },
   {
@@ -32,23 +20,21 @@ var PERMISSION_CATEGORIES = [
     items: [
       { code: 'ticket:create', name: '创建工单' },
       { code: 'ticket:approve', name: '审批工单' },
-      { code: 'ticket:reject', name: '拒绝工单' },
       { code: 'ticket:execute', name: '执行工单' },
     ],
   },
   {
-    label: '数据操作',
+    label: 'DDL 权限',
     items: [
-      { code: 'export:data', name: '导出数据' },
+      { code: 'ddl:execute', name: 'DDL 执行' },
-      { code: 'import:data', name: '导入数据' },
     ],
   },
   {
-    label: '管理权限',
+    label: '运维权限',
     items: [
-      { code: 'instance:connect', name: '连接实例' },
+      { code: 'slowlog:view', name: '查看慢日志' },
-      { code: 'instance:view_slow_query', name: '查看慢查询' },
+      { code: 'backup:manage', name: '备份管理' },
-      { code: 'instance:kill_process', name: '终止进程' },
+      { code: 'instance:detail', name: '实例详情' },
     ],
   },
 ];