feat: complete E2E deployment flow with storage layered config and values template versioning

- Instance deployment: charts browser, deploy modal, instances list
- Values Template version management (create/history/rollback)
- Storage layered config (cluster > workspace > shared priority)
- Cluster credential decryptIfNeeded for mixed encrypted/plaintext kubeconfig
- YAML syntax validation (client-side + server-side warning)
- Frontend: charts, instances, storage, templates, admin pages
- Backend: storage service, instance service, cluster service, helm client
- Multi-Tenant Kubeconfig.md: added by user

backend/internal/adapter/input/http/rest/auth_handler.go

@@ -83,14 +83,14 @@ func (h *AuthHandler) Login(w http.ResponseWriter, r *http.Request) {
 	// 获取用户信息
 	// TODO: 从 token 解析用户信息或从服务获取
 
-	// 返回响应
+	// 返回响应 - 使用 respondSuccess 包装，与其他 API 保持一致
 	response := &dto.AuthResponse{
 		AccessToken:  accessToken,
 		RefreshToken: refreshToken,
 		Username:     req.Username,
 	}
 
-	respondJSON(w, http.StatusOK, response)
+	respondSuccess(w, "Login successful", response)
 }
 
 // RefreshToken 刷新 Token
@@ -117,11 +117,11 @@ func (h *AuthHandler) RefreshToken(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	// 返回响应
+	// 返回响应 - 使用 respondSuccess 包装
 	response := &dto.AuthResponse{
 		AccessToken:  newAccessToken,
 		RefreshToken: req.RefreshToken,
 	}
 
-	respondJSON(w, http.StatusOK, response)
+	respondSuccess(w, "Token refreshed", response)
 }