feat(cloud-agent): 云端 Agent - 完善运行时与资源持久化

backend/internal/repository/repository.go

@@ -10,6 +10,7 @@ import (
 	"strings"
 	"time"
 
+	"infinite-canvas/backend/internal/database"
 	"infinite-canvas/backend/internal/model"
 
 	"gorm.io/gorm"
@@ -73,32 +74,7 @@ func (r *Repository) ReleaseTaskLease(id string, owner string) error {
 // NextPrefixedID 在数据库事务中递增序列，避免 UUID/父子字符串拼接导致的不可读和不可排序 ID。
 // prefix 只决定展示前缀，关联关系仍由独立外键维护。
 func (r *Repository) NextPrefixedID(prefix string) (string, error) {
-	return r.nextPrefixedID(r.db, prefix)
-}
-
-func (r *Repository) nextPrefixedID(db *gorm.DB, prefix string) (string, error) {
-	prefix = strings.ToUpper(strings.TrimSpace(prefix))
-	if prefix == "" || len(prefix) > 16 {
-		return "", errors.New("invalid id prefix")
-	}
-	sequence := "id:" + prefix
-	var item model.IDSequence
-	err := db.Transaction(func(tx *gorm.DB) error {
-		if err := tx.Clauses(clause.OnConflict{DoNothing: true}).Create(&model.IDSequence{Name: sequence, UpdatedAt: time.Now()}).Error; err != nil {
-			return err
-		}
-		if err := tx.Model(&model.IDSequence{}).Where("name = ?", sequence).Updates(map[string]any{
-			"value":      gorm.Expr("value + ?", 1),
-			"updated_at": time.Now(),
-		}).Error; err != nil {
-			return err
-		}
-		return tx.First(&item, "name = ?", sequence).Error
-	})
-	if err != nil {
-		return "", err
-	}
-	return fmt.Sprintf("%s_%06d", prefix, item.Value), nil
+	return database.AllocatePrefixedID(r.db, prefix)
 }
 
 func (r *Repository) UserStorageUsage(userID string) (UserStorageUsage, error) {

backend/internal/repository/skill_packages.go

@@ -51,9 +51,9 @@ func (r *Repository) SkillFiles(versionID string) ([]model.SkillFile, error) {
 	return files, err
 }
 
-func (r *Repository) SkillsForPackageEnsure(userSource int) ([]model.Skill, error) {
+func (r *Repository) SkillsForPackageEnsure() ([]model.Skill, error) {
 	var skills []model.Skill
-	err := r.db.Where("status = ? AND (current_version_id = '' OR source <> ?)", 1, userSource).Find(&skills).Error
+	err := r.db.Where("status = ?", 1).Find(&skills).Error
 	return skills, err
 }