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

internal/infrastructure/useCases/GetMediaUsage.go

@@ -8,7 +8,6 @@ import (
 	"RenewCMS/internal/domain/image"
 	"RenewCMS/internal/domain/site"
 	"slices"
-	"strings"
 )
 
 const (
@@ -111,7 +110,7 @@ func (u *GetMediaUsageUseCase) articleUsages(img image.Image) ([]MediaUsage, err
 	}
 	byID := map[uint32]*MediaUsage{}
 	for _, found := range inBody {
-		if !strings.Contains(found.Body, storedName) {
+		if !image.ContainsStoredName(found.Body, storedName) {
 			continue
 		}
 		entry := usageFor(byID, found)
@@ -172,5 +171,5 @@ func (u *GetMediaUsageUseCase) siteUsages(img image.Image) ([]MediaUsage, error)
 }
 
 func articleMentionsImage(a article.Article, img image.Image) bool {
-	return strings.Contains(a.Body, image.StoredName(img.Path)) || a.UsesImage(img.ID)
+	return image.ContainsStoredName(a.Body, image.StoredName(img.Path)) || a.UsesImage(img.ID)
 }