refactor(*): 数据同步与资源删除 - 收敛服务端真相并保证删除可恢复

backend/internal/model/models.go

@@ -13,6 +13,7 @@ type ChannelScope string
 type ChannelInterfaceType string
 type ApiCallStatus string
 type ResourceStatus string
+type ResourceDeletionStatus string
 type BillingStatus string
 type CreditLedgerType string
 type RedeemCodeStatus string
@@ -91,6 +92,9 @@ const (
 	ResourceStatusFailed  ResourceStatus = "failed"
 	ResourceStatusDeleted ResourceStatus = "deleted"
 
+	ResourceDeletionStatusPending    ResourceDeletionStatus = "pending"
+	ResourceDeletionStatusProcessing ResourceDeletionStatus = "processing"
+
 	BillingStatusReserved  BillingStatus = "reserved"
 	BillingStatusRunning   BillingStatus = "running"
 	BillingStatusSettled   BillingStatus = "settled"

backend/internal/model/models_project.go

@@ -27,6 +27,28 @@ type Resource struct {
 	UpdatedAt        time.Time `json:"updatedAt"`
 }
 
+// ResourceDeletionJob is the durable handoff between database deletion and
+// physical object cleanup. Storage fields are frozen because the Resource row
+// is removed in the same transaction that creates this job.
+type ResourceDeletionJob struct {
+	ID               string                 `json:"id" gorm:"primaryKey;size:36"`
+	UserID           string                 `json:"userId" gorm:"index;size:36"`
+	ResourceID       string                 `json:"resourceId" gorm:"index;size:36"`
+	Provider         string                 `json:"provider" gorm:"size:24"`
+	Endpoint         string                 `json:"endpoint"`
+	Bucket           string                 `json:"bucket" gorm:"size:160"`
+	StorageSettingID string                 `json:"-" gorm:"index;size:36"`
+	ObjectKey        string                 `json:"objectKey" gorm:"index"`
+	Status           ResourceDeletionStatus `json:"status" gorm:"index:idx_resource_deletion_jobs_due,priority:1;size:24"`
+	Attempts         int                    `json:"attempts"`
+	LastError        string                 `json:"lastError" gorm:"type:text"`
+	NextAttemptAt    time.Time              `json:"nextAttemptAt" gorm:"index:idx_resource_deletion_jobs_due,priority:2"`
+	LeaseOwner       string                 `json:"-" gorm:"index;size:120"`
+	LeaseExpiresAt   *time.Time             `json:"-" gorm:"index"`
+	CreatedAt        time.Time              `json:"createdAt"`
+	UpdatedAt        time.Time              `json:"updatedAt"`
+}
+
 type Asset struct {
 	ID               string             `json:"id" gorm:"primaryKey;size:80"`
 	UserID           string             `json:"userId" gorm:"index;size:36;index:idx_assets_user_updated,priority:1"`