add theme

themes/butterfly/layout/includes/widget/card_post_series.pug

@@ -0,0 +1,21 @@
+if theme.aside.card_post_series.enable
+  - const array = fragment_cache('seriesArr', groupPosts)
+  .card-widget.card-post-series
+    .item-headline
+      i.fa-solid.fa-layer-group
+      span= theme.aside.card_post_series.series_title ? page.series : _p('aside.card_post_series')
+    .aside-list
+      each item in array[page.series]
+        - const { path, title = _p('no_title'), cover, cover_type, date:dateA } = item
+        - let link = url_for(path)
+        - let no_cover = cover === false || !theme.cover.aside_enable ? 'no-cover' : ''
+        .aside-list-item(class=no_cover)
+          if cover && theme.cover.aside_enable
+            a.thumbnail(href=link title=title)
+              if cover_type === 'img'
+                img(src=url_for(cover) onerror=`this.onerror=null;this.src='${url_for(theme.error_img.post_page)}'` alt=title)
+              else
+                div(style=`background: ${cover}`)
+          .content
+            a.title(href=link title=title)= title
+            time(datetime=date_xml(dateA) title=_p('post.created') + ' ' + full_date(dateA)) #[=date(dateA, config.date_format)]