feat: Phase 3 - AES encryption, SQL audit engine, audit logs (85 tests)

Phase 3.1: Instance password AES-256-GCM encryption
Phase 3.2: SQL audit rule engine (10 rules)
Phase 3.3: Auto-audit on ticket creation
Phase 3.4: Operation audit logs + GET /audit/logs
Tests: 44 -> 85 (41 new), Frontend: AuditLogsPage

frontend/src/lib/mock.ts

@@ -32,6 +32,7 @@ export const menuItems = [
   { id: 'users', label: '用户管理', icon: 'Users', section: 'permission', roles: ['admin'] },
   { id: 'data-permission', label: '数据权限', icon: 'Lock', section: 'permission', roles: ['admin', 'dba'] },
   { id: 'audit-rules', label: '审核规则', icon: 'Shield', section: 'system', roles: ['admin', 'dba'] },
+  { id: 'audit-logs', label: '审计日志', icon: 'FileText', section: 'system', roles: ['admin', 'dba'] },
   { id: 'workflow', label: '审批流程', icon: 'GitBranch', section: 'system', roles: ['admin', 'dba'] },
   { id: 'auto-task', label: '自动任务', icon: 'Clock', section: 'system', roles: ['admin'] },
   { id: 'announcement', label: '公告管理', icon: 'Megaphone', section: 'system', roles: ['admin'] },
@@ -165,8 +166,8 @@ export const notificationChannels: NotificationChannel[] = [
 ];
 
 export const roles: Role[] = [
-  { id: 'admin', name: '超级管理员', description: '拥有系统的所有权限，包括用户管理、系统配置等', icon: 'Crown', iconClass: 'text-purple-400 bg-purple-400/10', userCount: 2, permissionCount: 56, permissions: ['dashboard', 'mysql', 'postgres', 'redis', 'mongo', 'tickets', 'queries', 'roles', 'users', 'data-permission', 'audit-rules', 'workflow', 'auto-task', 'announcement', 'config-platform', 'notifications'] },
-  { id: 'dba', name: '数据库管理员', description: '负责数据库运维、工单审批和 SQL 审核', icon: 'Database', iconClass: 'text-blue-400 bg-blue-400/10', userCount: 5, permissionCount: 32, permissions: ['dashboard', 'mysql', 'postgres', 'redis', 'tickets', 'queries', 'data-permission', 'audit-rules', 'workflow'] },
+  { id: 'admin', name: '超级管理员', description: '拥有系统的所有权限，包括用户管理、系统配置等', icon: 'Crown', iconClass: 'text-purple-400 bg-purple-400/10', userCount: 2, permissionCount: 56, permissions: ['dashboard', 'mysql', 'postgres', 'redis', 'mongo', 'tickets', 'queries', 'roles', 'users', 'data-permission', 'audit-rules', 'audit-logs', 'workflow', 'auto-task', 'announcement', 'config-platform', 'notifications'] },
+  { id: 'dba', name: '数据库管理员', description: '负责数据库运维、工单审批和 SQL 审核', icon: 'Database', iconClass: 'text-blue-400 bg-blue-400/10', userCount: 5, permissionCount: 32, permissions: ['dashboard', 'mysql', 'postgres', 'redis', 'tickets', 'queries', 'data-permission', 'audit-rules', 'audit-logs', 'workflow'] },
   { id: 'developer', name: '开发人员', description: '可以提交变更工单和执行数据查询', icon: 'Code', iconClass: 'text-green-400 bg-green-400/10', userCount: 28, permissionCount: 12, permissions: ['dashboard', 'tickets', 'queries'] },
   { id: 'guest', name: '访客', description: '仅可查看，无法执行任何操作', icon: 'Eye', iconClass: 'text-gray-400 bg-gray-400/10', userCount: 8, permissionCount: 4, permissions: ['dashboard', 'queries'] },
 ];