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/dto/alerts.go

@@ -0,0 +1,27 @@
+package dto
+
+// 通知与告警域
+type NotifyConfigRequest struct {
+	Enabled       bool   `json:"enabled"`
+	Webhook       string `json:"webhook" binding:"omitempty,url"`
+	SigningSecret string `json:"signingSecret"`
+}
+
+type AlertRuleRequest struct {
+	Name        string `json:"name" binding:"required"`
+	SourceID    uint   `json:"sourceId" binding:"required"`
+	ChannelIDs  []uint `json:"channelIds"`
+	Query       string `json:"query" binding:"required"`
+	WindowMin   int    `json:"windowMin"`
+	Threshold   int    `json:"threshold"`
+	Enabled     bool   `json:"enabled"`
+	CooldownMin int    `json:"cooldownMin"`
+}
+
+type NotifyChannelRequest struct {
+	ID            uint   `json:"id"`
+	Name          string `json:"name"`
+	Webhook       string `json:"webhook" binding:"omitempty,url"`
+	SigningSecret string `json:"signingSecret"`
+	Enabled       bool   `json:"enabled"`
+}

backend/dto/deployment.go

@@ -5,9 +5,11 @@ type CreateDeploymentRequest struct {
 	Name            string `json:"name" binding:"required"`
 	Description     string `json:"description"`
 	Version         string `json:"version"`
-	Mode            string `json:"mode" binding:"required,oneof=k8s-helm k8s-yaml host-binary"`
+	Mode            string `json:"mode" binding:"required,oneof=k8s-yaml host-binary host-docker"`
 	ClusterID       *uint  `json:"clusterID"`
 	HostID          *uint  `json:"hostID"`
+	ListenIP        string `json:"listenIP"`
+	ListenPort      int    `json:"listenPort"`
 	Namespace       string `json:"namespace"`
 	StorageConfigID uint   `json:"storageConfigID"`
 	AuthEnabled     bool   `json:"authEnabled"`
@@ -19,3 +21,9 @@ type CreateDeploymentRequest struct {
 	GrafanaEnabled  bool   `json:"grafanaEnabled"`
 	GrafanaVersion  string `json:"grafanaVersion"`
 }
+
+// UpdateRetentionRequest 编辑 Loki limits_config 中的保留策略片段。
+type UpdateRetentionRequest struct {
+	YAML  string `json:"yaml" binding:"required"`
+	Apply bool   `json:"apply"`
+}

backend/dto/image_registry.go

@@ -0,0 +1,6 @@
+package dto
+
+type ImageRegistryRequest struct {
+	Mode       string `json:"mode" binding:"required,oneof=overseas cn custom"`
+	CustomHost string `json:"customHost"`
+}