refactor: 前后端目录结构模块化 + v2 优化移植与缺陷修复

前端:
- src/srv/api → src/api，按域分文件夹(auth/cluster/host/storage/deployment/collector)
- 新增 http.ts 引擎(http.get/post/put/delete)，域模块改用语义化调用
- index.html 增加 favicon(匹配应用 logo 的 emerald + Activity 脉冲)

后端分层增强(保留包名):
- 新增 repository/：从 models 拆出 JsonDB 持久化层(InitDB/GetDB/Shutdown/RequestSave)
- 新增 dto/：从 controllers 抽出各域请求契约(带 binding 校验)
- 新增 pkg/crypto、pkg/jwt：从 utils 拆出安全原语(外部 jwt 别名 jwtv5 避免冲突)
- models 只留领域实体 + sanitizer；utils 只留 gin/应用相关(response/errors)

v2 优化移植与缺陷修复:
- 移植密钥分离/SSH TOFU/并发写安全/Loki 生产级配置/Docker 加固
- 修复 deployment.go 并发丢更新、Helm values 重复键、EncryptField 哨兵、loki-gateway 端点等审计缺陷
- 实现真正的优雅关停(main.go http.Server + signal + repository.Shutdown)
- 修复登录契约:后端返回 accessToken，前端 auth.ts/Login.tsx 对齐
- 补 crypto/jwt/repository 单元测试(含并发写回归)

验证: go build/vet/test 全绿；npm run build 通过；登录→鉴权→优雅关停冒烟通过

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

backend/controllers/deployment.go

@@ -1,6 +1,8 @@
 package controllers
 
 import (
+	"lokideploy/dto"
+	"lokideploy/models"
 	"lokideploy/services"
 	"lokideploy/utils"
 
@@ -15,25 +17,8 @@ func NewDeploymentController() *DeploymentController {
 	return &DeploymentController{service: services.NewDeploymentService()}
 }
 
-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"`
-	ClusterID       *uint  `json:"clusterID"`
-	HostID          *uint  `json:"hostID"`
-	Namespace       string `json:"namespace"`
-	StorageConfigID uint   `json:"storageConfigID"`
-	AuthEnabled     bool   `json:"authEnabled"`
-	RetentionDays   int    `json:"retentionDays"`
-	Replicas        int    `json:"replicas"`
-	ResourcesCPU    string `json:"resourcesCPU"`
-	ResourcesMem    string `json:"resourcesMem"`
-	StorageSize     string `json:"storageSize"`
-}
-
 func (ctrl *DeploymentController) Create(c *gin.Context) {
-	var req CreateDeploymentRequest
+	var req dto.CreateDeploymentRequest
 	if !utils.BindAndValidate(c, &req) {
 		return
 	}
@@ -57,7 +42,7 @@ func (ctrl *DeploymentController) Create(c *gin.Context) {
 		utils.Error(c, 400, err.Error())
 		return
 	}
-	utils.Success(c, deployment)
+	utils.Success(c, models.SanitizedJSON(deployment))
 }
 
 func (ctrl *DeploymentController) Get(c *gin.Context) {
@@ -71,7 +56,7 @@ func (ctrl *DeploymentController) Get(c *gin.Context) {
 		utils.NotFound(c, "部署不存在")
 		return
 	}
-	utils.Success(c, deployment)
+	utils.Success(c, models.SanitizedJSON(deployment))
 }
 
 func (ctrl *DeploymentController) List(c *gin.Context) {
@@ -82,7 +67,7 @@ func (ctrl *DeploymentController) List(c *gin.Context) {
 		return
 	}
 	utils.Success(c, utils.PageData{
-		List: deployments, Total: total, Page: page, PageSize: pageSize,
+		List: models.SanitizedJSON(deployments), Total: total, Page: page, PageSize: pageSize,
 	})
 }