feat(*): 分镜与资产 - 完善五类资产、候选去重、搜索、中文镜头编号与分类整理

backend/internal/service/user_data.go

@@ -292,10 +292,7 @@ func assetFromJSON(userID string, raw json.RawMessage) (model.Asset, error) {
 	if utf8.RuneCountInString(primaryVersionID) > 36 {
 		return model.Asset{}, BadAuthRequest("素材主版本 ID 不能超过 36 个字符")
 	}
-	category := model.AssetCategory(strings.TrimSpace(payload.Category))
-	if category == "" {
-		category = model.AssetCategoryOther
-	}
+	category := model.NormalizeAssetCategory(model.AssetCategory(payload.Category), payload.Kind)
 	status := model.AssetVersionStatus(strings.TrimSpace(payload.Status))
 	if status == "" {
 		status = model.AssetVersionStatusConfirmed