refac: atomic merge, lost-update race, RunPurge cost, duplicated walks

test/seo_data_media_http_test.go

@@ -2,7 +2,6 @@ package test
 
 import (
 	"RenewCMS/internal/domain/article"
-	"RenewCMS/internal/infrastructure/useCases"
 	"encoding/json"
 	"errors"
 	"net/http"
@@ -355,7 +354,7 @@ func TestSeoDataMediaMerge(t *testing.T) {
 		seedDuplicates(e)
 		e.updateArticle(8, func(a *article.Article) { a.CoverImageID = idPointer(6) })
 		e.updateArticle(9, func(a *article.Article) { a.SocialImageID = idPointer(6) })
-		merge := useCases.NewMergeMediaUseCase(e.images, e.articles, newMockImageStorage(), newMockVariantFileRepo(), discardRecorder, e.sites, e.authors, newMockContentTypeRepo(), newMockEntryRepo())
+		merge := newTestMergeMedia(e.images, e.articles, newMockImageStorage(), newMockVariantFileRepo(), discardRecorder, e.sites, e.authors, newMockContentTypeRepo(), newMockEntryRepo())
 
 		result, err := merge.Merge(testCtx, 5, []uint32{6})