can fetch zenshuu with tag

src/feeds/http.go

@@ -64,6 +64,9 @@ func (feed Feed) Fetch(ctx context.Context) (Items, error) {
 
 	result := make(Items, 0, len(gfeed.Items))
 	for _, gitem := range gfeed.Items {
+		if gitem.Author == nil {
+			gitem.Author = &gofeed.Person{}
+		}
 		if matches := slices.DeleteFunc(append([]string{
 			gitem.Title,
 			gitem.Description,
@@ -97,6 +100,7 @@ func (feed Feed) Fetch(ctx context.Context) (Items, error) {
 			Links:   links,
 			Preview: preview,
 			Body:    body,
+			Tag:     feed.Version.Tag,
 		})
 	}