feat: Sites feature backend

api/handlers/media/mediaHandler.go

@@ -97,6 +97,7 @@ type usageResponse struct {
 
 type mergeResponse struct {
 	ArticlesUpdated int `json:"articles_updated"`
+	SitesUpdated    int `json:"sites_updated"`
 	Merged          int `json:"merged"`
 }
 
@@ -352,7 +353,7 @@ func (h *Handler) Merge(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	writeJSON(w, http.StatusOK, mergeResponse{ArticlesUpdated: result.ArticlesUpdated, Merged: result.Merged})
+	writeJSON(w, http.StatusOK, mergeResponse{ArticlesUpdated: result.ArticlesUpdated, SitesUpdated: result.SitesUpdated, Merged: result.Merged})
 }
 
 func writeMergeError(w http.ResponseWriter, err error) {