feat: complete Loki query, insights, settings and deployment workflows

Add the Loki query UI, access policies, ingress insights, alert and registry settings, and their backend APIs. Include the related Kubernetes deployment and collector updates required by the integrated application.

Validated with go test ./..., npm run build, and npm run lint.

backend/main.go

@@ -13,6 +13,7 @@ import (
 	"opsxloki/repository"
 	"opsxloki/routers"
 	"opsxloki/seed"
+	"opsxloki/services"
 )
 
 func main() {
@@ -30,12 +31,15 @@ func main() {
 	// 残留的 "deploying" 状态将永远卡住(UI 无停止入口),启动时统一标记为失败。
 	repository.GetDB().RecoverOrphanDeployments()
 
+	services.StartAlertEngine()
+	defer services.StopAlertEngine()
+
 	r := routers.SetupRouter()
 	srv := &http.Server{
 		Addr:         ":" + cfg.ServerPort,
 		Handler:      r,
 		ReadTimeout:  30 * time.Second,
-		WriteTimeout: 30 * time.Second,
+		WriteTimeout: 130 * time.Second,
 		IdleTimeout:  120 * time.Second,
 	}