feat: LokiDeploy 初始提交 - 轻量级 K8s Loki 部署平台

Go(Gin) + React(Vite + shadcn/ui + Tailwind) 前后端分离，全中文 UI

- 集群管理：Kubeconfig / Token 双接入，kubectl + helm 部署
- 主机管理：SSH 密钥 / 密码双认证，CPU/内存/磁盘使用率监控，SSH 错误中文友好提示
- 存储配置、部署管理、系统设置
- Docker 镜像内置 kubectl + helm，开箱即用
- run.sh 一键启停（start/stop/restart/status）

Co-Authored-By: Claude <noreply@anthropic.com>

backend/models/sanitizer.go

@@ -0,0 +1,68 @@
+package models
+
+// Sanitizer interface for models that can sanitize themselves
+type Sanitizer interface {
+	Sanitized() map[string]interface{}
+}
+
+// SanitizedJSON sanitizes a single model or a slice of models
+func SanitizedJSON(v any) any {
+	switch val := v.(type) {
+	// Single objects
+	case User:
+		return val.Sanitized()
+	case *User:
+		if val == nil {
+			return nil
+		}
+		return val.Sanitized()
+	case Cluster:
+		return val.Sanitized()
+	case *Cluster:
+		if val == nil {
+			return nil
+		}
+		return val.Sanitized()
+	case Host:
+		return val.Sanitized()
+	case *Host:
+		if val == nil {
+			return nil
+		}
+		return val.Sanitized()
+	case StorageConfig:
+		return val.Sanitized()
+	case *StorageConfig:
+		if val == nil {
+			return nil
+		}
+		return val.Sanitized()
+	// Slices
+	case []User:
+		result := make([]map[string]interface{}, len(val))
+		for i, item := range val {
+			result[i] = item.Sanitized()
+		}
+		return result
+	case []Cluster:
+		result := make([]map[string]interface{}, len(val))
+		for i, item := range val {
+			result[i] = item.Sanitized()
+		}
+		return result
+	case []Host:
+		result := make([]map[string]interface{}, len(val))
+		for i, item := range val {
+			result[i] = item.Sanitized()
+		}
+		return result
+	case []StorageConfig:
+		result := make([]map[string]interface{}, len(val))
+		for i, item := range val {
+			result[i] = item.Sanitized()
+		}
+		return result
+	default:
+		return v
+	}
+}