refactor: 标准化项目结构 frontend/ + backend/ + SQLite + run.sh

- 目录重构: app/ -> frontend/，与 backend/ 并列
- 数据库: 默认 SQLite（零配置），修复 DSN() bug
- run.sh: 一键启动前后端，支持 start/stop/restart/status
- Makefile: install/dev/build/lint/clean 快捷命令
- vite.config.ts: 配置 dev server 端口 5173 + API 代理到 8080
- config.yaml: SQLite 默认配置，开箱即用
- docs/: 完整开发文档（项目结构/API/数据库/规范/部署）
- 修复: GORM foreign key 关联声明
- 修复: go get gorm.io/driver/sqlite 依赖

frontend/src/components/layout/Sidebar.tsx

@@ -0,0 +1,344 @@
+import { useState } from 'react';
+import { NavLink, useLocation } from 'react-router-dom';
+import { cn } from '@/lib/utils';
+import { useThemeStore, useMenuStore } from '@/store';
+import {
+  LayoutDashboard,
+  Server,
+  Cloud,
+  Rocket,
+  Bell,
+  CheckSquare,
+  PlayCircle,
+  Settings,
+  ChevronDown,
+  ChevronRight,
+  Terminal,
+  Cpu,
+  Database,
+  FileCode,
+  Shield,
+  Users,
+  LogOut,
+  Menu,
+  X,
+  Box,
+  Network,
+  CloudCog,
+  Globe,
+  MapPin,
+  Key,
+  Compass,
+  Brain,
+  ScrollText,
+  FileTerminal,
+  Activity,
+  BarChart3,
+  GitBranch,
+  Monitor,
+  Bot,
+  AlertTriangle,
+} from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { ScrollArea } from '@/components/ui/scroll-area';
+import { Separator } from '@/components/ui/separator';
+
+interface MenuItem {
+  id: string;
+  name: string;
+  icon: React.ElementType;
+  path?: string;
+  children?: MenuItem[];
+}
+
+const menuItems: MenuItem[] = [
+  { id: 'dashboard', name: '仪表盘', icon: LayoutDashboard, path: '/' },
+  {
+    id: 'assets',
+    name: '资产管理',
+    icon: Server,
+    children: [
+      { id: 'servers', name: '服务器管理', icon: Database, path: '/servers' },
+      { id: 'cloud-accounts', name: '云账号管理', icon: Key, path: '/cloud-accounts' },
+      { id: 'domains', name: '域名管理', icon: Globe, path: '/domains' },
+      { id: 'regions', name: '区域管理', icon: MapPin, path: '/regions' },
+      { id: 'platforms', name: '云平台', icon: CloudCog, path: '/platforms' },
+      { id: 'resource-models', name: '资源模型', icon: Box, path: '/resource-models' },
+      { id: 'webshell', name: 'WebShell', icon: Terminal, path: '/webshell' },
+      { id: 'batch-import', name: '批量导入', icon: FileCode, path: '/batch-import' },
+    ],
+  },
+  {
+    id: 'k8s',
+    name: 'K8s集群管理',
+    icon: Cloud,
+    children: [
+      { id: 'clusters', name: '集群列表', icon: Cloud, path: '/clusters' },
+      { id: 'nodes', name: '节点管理', icon: Cpu, path: '/nodes' },
+      { id: 'workloads', name: '工作负载', icon: Database, path: '/workloads' },
+      { id: 'topology', name: '架构拓扑', icon: Network, path: '/topology' },
+    ],
+  },
+  {
+    id: 'deploy',
+    name: '应用发布',
+    icon: Rocket,
+    children: [
+      { id: 'pipelines', name: '流水线管理', icon: GitBranch, path: '/pipelines' },
+      { id: 'releases', name: '发布管理', icon: Rocket, path: '/releases' },
+    ],
+  },
+  {
+    id: 'monitor',
+    name: '监控告警',
+    icon: Bell,
+    children: [
+      { id: 'metrics', name: '指标监控', icon: Cpu, path: '/metrics' },
+      { id: 'alert-center', name: '告警中心', icon: Bell, path: '/alert-center' },
+      { id: 'logs-monitor', name: '日志能力', icon: FileCode, path: '/logs-monitor' },
+      { id: 'trace', name: '链路追踪', icon: GitBranch, path: '/trace' },
+      { id: 'grafana', name: '监控大屏', icon: Monitor, path: '/grafana' },
+    ],
+  },
+  { id: 'approval', name: '审批流程', icon: CheckSquare, path: '/approval' },
+  { id: 'navigation', name: '站内导航', icon: Compass, path: '/navigation' },
+  {
+    id: 'automation',
+    name: '自动化运维',
+    icon: PlayCircle,
+    children: [
+      { id: 'cronjobs', name: '定时任务', icon: PlayCircle, path: '/cronjobs' },
+      { id: 'scripts', name: '脚本库', icon: FileCode, path: '/scripts' },
+      { id: 'ansible', name: 'Ansible', icon: FileTerminal, path: '/ansible' },
+    ],
+  },
+  {
+    id: 'aiops',
+    name: 'AIOps智能',
+    icon: Brain,
+    children: [
+      { id: 'ai-hub', name: '智能运维中心', icon: Brain, path: '/ai-hub' },
+      { id: 'ai-assistant', name: 'AI智能助手', icon: Bot, path: '/ai-assistant' },
+      { id: 'ai-alert-analyzer', name: '告警智能分析', icon: AlertTriangle, path: '/ai-alert-analyzer' },
+      { id: 'ai-script-generator', name: 'AI脚本生成', icon: FileCode, path: '/ai-script-generator' },
+      { id: 'ai-fault-diagnosis', name: '故障智能诊断', icon: Activity, path: '/ai-fault-diagnosis' },
+      { id: 'ai-predictive', name: 'AI预测分析', icon: BarChart3, path: '/ai-predictive' },
+      { id: 'sql-audit', name: 'SQL审计', icon: ScrollText, path: '/sql-audit' },
+    ],
+  },
+  {
+    id: 'system',
+    name: '系统管理',
+    icon: Settings,
+    children: [
+      { id: 'users', name: '用户管理', icon: Users, path: '/users' },
+      { id: 'roles', name: '角色权限', icon: Shield, path: '/roles' },
+      { id: 'logs-audit', name: '操作审计', icon: FileCode, path: '/logs-audit' },
+      { id: 'settings', name: '系统设置', icon: Settings, path: '/settings' },
+    ],
+  },
+];
+
+function MenuItemComponent({ item, depth = 0 }: { item: MenuItem; depth?: number }) {
+  const location = useLocation();
+  const { openMenus, toggleMenu, activeMenu, setActiveMenu } = useMenuStore();
+  const { sidebarCollapsed } = useThemeStore();
+  const hasChildren = item.children && item.children.length > 0;
+  const isOpen = openMenus.includes(item.id);
+  const isActive = item.path === location.pathname || activeMenu === item.id;
+
+  const handleClick = () => {
+    if (hasChildren) {
+      toggleMenu(item.id);
+    } else if (item.path) {
+      setActiveMenu(item.id);
+    }
+  };
+
+  if (sidebarCollapsed && depth === 0) {
+    return (
+      <div className="relative group">
+        <Button
+          variant={isActive ? 'secondary' : 'ghost'}
+          size="icon"
+          className={cn(
+            'w-10 h-10 mx-auto mb-1',
+            isActive && 'bg-blue-600/20 text-blue-400'
+          )}
+          asChild={!hasChildren}
+        >
+          {hasChildren ? (
+            <span onClick={handleClick}>
+              <item.icon className="h-5 w-5" />
+            </span>
+          ) : (
+            <NavLink to={item.path || '#'} onClick={handleClick}>
+              <item.icon className="h-5 w-5" />
+            </NavLink>
+          )}
+        </Button>
+        {/* Tooltip */}
+        <div className="absolute left-full top-1/2 -translate-y-1/2 ml-2 px-3 py-1.5 bg-slate-800 text-slate-100 text-sm rounded-md opacity-0 invisible group-hover:opacity-100 group-hover:visible transition-all whitespace-nowrap z-50 border border-slate-700">
+          {item.name}
+          {hasChildren && (
+            <div className="absolute left-0 top-0 mt-2 ml-2 w-48 bg-slate-800 rounded-md border border-slate-700 shadow-lg py-1">
+              {item.children?.map((child) => (
+                <NavLink
+                  key={child.id}
+                  to={child.path || '#'}
+                  className={({ isActive }) =>
+                    cn(
+                      'block px-4 py-2 text-sm hover:bg-slate-700 transition-colors',
+                      isActive ? 'text-blue-400 bg-blue-600/10' : 'text-slate-300'
+                    )
+                  }
+                >
+                  {child.name}
+                </NavLink>
+              ))}
+            </div>
+          )}
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className={cn('mb-0.5', depth > 0 && 'ml-4')}> 
+      {hasChildren ? (
+        <>
+          <Button
+            variant={isActive ? 'secondary' : 'ghost'}
+            className={cn(
+              'w-full justify-between h-9 px-3 text-sm font-normal',
+              isActive ? 'bg-blue-600/20 text-blue-400 hover:bg-blue-600/30' : 'text-slate-300 hover:text-slate-100 hover:bg-slate-800'
+            )}
+            onClick={handleClick}
+          >
+            <span className="flex items-center gap-2">
+              <item.icon className="h-4 w-4" />
+              <span>{item.name}</span>
+            </span>
+            {isOpen ? (
+              <ChevronDown className="h-4 w-4 text-slate-500" />
+            ) : (
+              <ChevronRight className="h-4 w-4 text-slate-500" />
+            )}
+          </Button>
+          {isOpen && (
+            <div className="mt-0.5 space-y-0.5">
+              {item.children?.map((child) => (
+                <NavLink
+                  key={child.id}
+                  to={child.path || '#'}
+                  onClick={() => setActiveMenu(child.id)}
+                  className={({ isActive }) =>
+                    cn(
+                      'flex items-center gap-2 px-3 py-2 text-sm rounded-md transition-colors',
+                      isActive
+                        ? 'bg-blue-600/20 text-blue-400'
+                        : 'text-slate-400 hover:text-slate-100 hover:bg-slate-800'
+                    )
+                  }
+                >
+                  <child.icon className="h-3.5 w-3.5" />
+                  <span>{child.name}</span>
+                </NavLink>
+              ))}
+            </div>
+          )}
+        </>
+      ) : (
+        <NavLink
+          to={item.path || '#'}
+          onClick={handleClick}
+          className={({ isActive }) =>
+            cn(
+              'flex items-center gap-2 px-3 py-2 text-sm rounded-md transition-colors',
+              isActive
+                ? 'bg-blue-600/20 text-blue-400'
+                : 'text-slate-300 hover:text-slate-100 hover:bg-slate-800'
+            )
+          }
+        >
+          <item.icon className="h-4 w-4" />
+          <span>{item.name}</span>
+        </NavLink>
+      )}
+    </div>
+  );
+}
+
+export function Sidebar() {
+  const { sidebarCollapsed, toggleSidebar } = useThemeStore();
+
+  return (
+    <aside
+      className={cn(
+        'fixed left-0 top-0 z-40 h-screen bg-slate-900 border-r border-slate-800 transition-all duration-300',
+        sidebarCollapsed ? 'w-16' : 'w-64'
+      )}
+    >
+      {/* Logo */}
+      <div className="flex items-center justify-between h-14 px-4 border-b border-slate-800">
+        {!sidebarCollapsed && (
+          <div className="flex items-center gap-2">
+            <div className="w-8 h-8 rounded-lg bg-gradient-to-br from-blue-500 to-cyan-500 flex items-center justify-center">
+              <Cloud className="h-5 w-5 text-white" />
+            </div>
+            <span className="font-semibold text-slate-100">AIOps平台</span>
+          </div>
+        )}
+        {sidebarCollapsed && (
+          <div className="w-8 h-8 rounded-lg bg-gradient-to-br from-blue-500 to-cyan-500 flex items-center justify-center mx-auto">
+            <Cloud className="h-5 w-5 text-white" />
+          </div>
+        )}
+        {!sidebarCollapsed && (
+          <Button
+            variant="ghost"
+            size="icon"
+            className="h-8 w-8 text-slate-400 hover:text-slate-100"
+            onClick={toggleSidebar}
+          >
+            <Menu className="h-4 w-4" />
+          </Button>
+        )}
+      </div>
+
+      {/* Menu */}
+      <ScrollArea className="h-[calc(100vh-3.5rem-4rem)]">
+        <div className={cn('p-2', sidebarCollapsed && 'px-1')}>
+          {menuItems.map((item) => (
+            <MenuItemComponent key={item.id} item={item} />
+          ))}
+        </div>
+      </ScrollArea>
+
+      {/* User */}
+      {!sidebarCollapsed && (
+        <div className="absolute bottom-0 left-0 right-0 p-3 border-t border-slate-800 bg-slate-900">
+          <div className="flex items-center gap-3">
+            <div className="w-8 h-8 rounded-full bg-blue-600 flex items-center justify-center text-white text-sm font-medium">
+              管
+            </div>
+            <div className="flex-1 min-w-0">
+              <p className="text-sm font-medium text-slate-200 truncate">管理员</p>
+              <p className="text-xs text-slate-500 truncate">admin@company.com</p>
+            </div>
+            <Button variant="ghost" size="icon" className="h-8 w-8 text-slate-400 hover:text-slate-100">
+              <LogOut className="h-4 w-4" />
+            </Button>
+          </div>
+        </div>
+      )}
+      {sidebarCollapsed && (
+        <div className="absolute bottom-0 left-0 right-0 p-2 border-t border-slate-800 bg-slate-900">
+          <Button variant="ghost" size="icon" className="w-10 h-10 mx-auto text-slate-400 hover:text-slate-100">
+            <LogOut className="h-5 w-5" />
+          </Button>
+        </div>
+      )}
+    </aside>
+  );
+}