feat: 定时任务编辑入口全栈打通 + 修复ApprovalFlow编译错误 + 完成大文件拆分重构

- CronJobManager: 编辑按钮接通 onClick → openEdit(job)，弹出编辑对话框预填数据，
  复用新建/编辑共用 Dialog（editingId 区分模式），标题/按钮文案动态切换，
  保存时根据 editingId 调用 createJob 或 updateJob — 消除占位按钮
- ApprovalFlow: 修复 API 方法名不匹配导致 tsc -b 编译失败
  (getInstances→getProcesses, getMyApprovals→getProcesses({status:'pending'}),
   approveInstance→approveProcess, rejectInstance→rejectProcess)
  + 添加 ApprovalFlowManager 导出别名兼容 App.tsx 导入
- 合并已完成的大文件拆分重构: automation.go→automation_cron/script/playbook,
  ldap.go→ldap_ou/ldap_users, server.go→cloud_accounts/domain/platform/region,
  user.go→user_admin; 前端 Dashboard/K8s/Server/Approval/Monitor 子组件拆分
  // Logan.Li

backend/internal/api/handlers/cloud_accounts.go

@@ -0,0 +1,202 @@
+package handlers
+
+import (
+	"net/http"
+	"strconv"
+	"strings"
+
+	"ezops/internal/models"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+)
+
+// CloudAccountHandler 云账号处理器
+type CloudAccountHandler struct {
+	db *gorm.DB
+}
+
+// NewCloudAccountHandler 创建云账号处理器
+func NewCloudAccountHandler(db *gorm.DB) *CloudAccountHandler {
+	return &CloudAccountHandler{db: db}
+}
+
+// ListCloudAccounts 获取云账号列表
+// @Summary 获取云账号列表
+// @Description 获取所有云账号列表
+// @Tags 云账号
+// @Produce json
+// @Security Bearer
+// @Success 200 {object} models.Response{data=models.ListResponse}
+// @Router /cloud-accounts [get]
+func (h *CloudAccountHandler) ListCloudAccounts(c *gin.Context) {
+	var accounts []models.CloudAccount
+	h.db.Find(&accounts)
+
+	c.JSON(http.StatusOK, models.Response{
+		Code:    200,
+		Message: "success",
+		Data: models.ListResponse{
+			List:  accounts,
+			Total: int64(len(accounts)),
+		},
+	})
+}
+
+// createCloudAccountRequest 创建云账号请求（独立 request struct，避免 CloudAccount.AccessKey/SecretKey 的 json:"-" 导致无法反序列化）
+type createCloudAccountRequest struct {
+	Name        string  `json:"name"`
+	Provider    string  `json:"provider"`
+	AccessKey   string  `json:"access_key"`
+	SecretKey   string  `json:"secret_key"`
+	MonthlyCost float64 `json:"monthly_cost"`
+	Status      string  `json:"status"`
+}
+
+// CreateCloudAccount 创建云账号
+// @Summary 创建云账号
+// @Description 创建新云账号
+// @Tags 云账号
+// @Accept json
+// @Produce json
+// @Security Bearer
+// @Param request body createCloudAccountRequest true "创建请求"
+// @Success 200 {object} models.Response{data=models.CloudAccount}
+// @Router /cloud-accounts [post]
+func (h *CloudAccountHandler) CreateCloudAccount(c *gin.Context) {
+	var req createCloudAccountRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, models.Response{
+			Code:    400,
+			Message: "请求参数错误: " + err.Error(),
+		})
+		return
+	}
+
+	if strings.TrimSpace(req.Name) == "" || strings.TrimSpace(req.Provider) == "" {
+		c.JSON(http.StatusBadRequest, models.Response{
+			Code:    400,
+			Message: "账号名称和云平台不能为空",
+		})
+		return
+	}
+
+	status := strings.TrimSpace(req.Status)
+	if status == "" {
+		status = "active"
+	}
+
+	account := models.CloudAccount{
+		Name:        strings.TrimSpace(req.Name),
+		Provider:    strings.TrimSpace(req.Provider),
+		AccessKey:   req.AccessKey,
+		SecretKey:   req.SecretKey,
+		MonthlyCost: req.MonthlyCost,
+		Status:      status,
+	}
+
+	if err := h.db.Create(&account).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, models.Response{
+			Code:    500,
+			Message: "创建失败",
+		})
+		return
+	}
+
+	c.JSON(http.StatusOK, models.Response{
+		Code:    200,
+		Message: "创建成功",
+		Data:    account,
+	})
+}
+
+// UpdateCloudAccount 更新云账号
+// @Summary 更新云账号
+// @Description 更新指定云账号信息
+// @Tags 云账号
+// @Accept json
+// @Produce json
+// @Security Bearer
+// @Param id path int true "云账号ID"
+// @Param request body createCloudAccountRequest true "更新请求"
+// @Success 200 {object} models.Response{data=models.CloudAccount}
+// @Router /cloud-accounts/{id} [put]
+func (h *CloudAccountHandler) UpdateCloudAccount(c *gin.Context) {
+	id, _ := strconv.Atoi(c.Param("id"))
+	var req createCloudAccountRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, models.Response{
+			Code:    400,
+			Message: "请求参数错误: " + err.Error(),
+		})
+		return
+	}
+
+	var account models.CloudAccount
+	if err := h.db.First(&account, id).Error; err != nil {
+		c.JSON(http.StatusNotFound, models.Response{
+			Code:    404,
+			Message: "云账号不存在",
+		})
+		return
+	}
+
+	// 只在提供非空值时更新凭证字段
+	if strings.TrimSpace(req.Name) != "" {
+		account.Name = strings.TrimSpace(req.Name)
+	}
+	if strings.TrimSpace(req.Provider) != "" {
+		account.Provider = strings.TrimSpace(req.Provider)
+	}
+	if strings.TrimSpace(req.AccessKey) != "" {
+		account.AccessKey = req.AccessKey
+	}
+	if strings.TrimSpace(req.SecretKey) != "" {
+		account.SecretKey = req.SecretKey
+	}
+	if strings.TrimSpace(req.Status) != "" {
+		account.Status = strings.TrimSpace(req.Status)
+	}
+	account.MonthlyCost = req.MonthlyCost
+
+	if err := h.db.Save(&account).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, models.Response{
+			Code:    500,
+			Message: "更新失败",
+		})
+		return
+	}
+
+	c.JSON(http.StatusOK, models.Response{
+		Code:    200,
+		Message: "更新成功",
+		Data:    account,
+	})
+}
+
+// DeleteCloudAccount 删除云账号
+// @Summary 删除云账号
+// @Description 删除指定云账号
+// @Tags 云账号
+// @Produce json
+// @Security Bearer
+// @Param id path int true "云账号ID"
+// @Success 200 {object} models.Response
+// @Router /cloud-accounts/{id} [delete]
+func (h *CloudAccountHandler) DeleteCloudAccount(c *gin.Context) {
+	id, _ := strconv.Atoi(c.Param("id"))
+
+	if err := h.db.Delete(&models.CloudAccount{}, id).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, models.Response{
+			Code:    500,
+			Message: "删除失败",
+		})
+		return
+	}
+
+	c.JSON(http.StatusOK, models.Response{
+		Code:    200,
+		Message: "删除成功",
+	})
+}
+