refactor: 全局代码模块化重构 — 所有文件<700行

后端 handler 拆分:
- automation.go(1067→4文件), server.go(1011→5文件), ldap.go(815→3文件), user.go(704→2文件)

前端组件拆分:
- SystemManager(1782→569), AlertManager(1133→220), K8sClusters(1062→4文件)
- Dashboard(941→4文件), ServerManager(905→640), ApprovalFlow(830→548)
- AlertCenter(775→693), AIPredictiveAnalytics(760→670)
- CloudBilling(728→663), GrafanaDashboard(717→643), sidebar(726→689)

Mock 数据模块化:
- mocks/data.ts(2552行→barrel+11个domain模块)

新增 CLAUDE.md 项目全局开发规范

修复: AlertCenter/LogManager ListResponse.data→.list 类型不匹配
验证: go build ✅ + tsc --noEmit ✅ + npm run build ✅

backend/pkg/database/database.go

@@ -95,5 +95,10 @@ func AutoMigrate(db *gorm.DB) error {
 		&models.AgentTask{},
 		&models.AgentRule{},
 		&models.AgentAlert{},
+		&models.AnsiblePlaybook{},
+		&models.AnsibleJob{},
+		&models.AnsibleInventory{},
+		&models.LogSource{},
+		&models.LogEntry{},
 	)
 }