Clean up tags admin

slices/admin/templates/shared/_tag.html.slim

@@ -1,4 +1,4 @@
-li id="tag-#{tag.id}"
+li id="tag-#{tag.id}" class="text-gray-800 dark:text-gray-200"
   = "#{tag.label} (#{tag.posts.count})"
   = " — "
   button hx-delete="/admin/tags/#{tag.id}" hx-target="#tag-#{tag.id}" delete

slices/admin/templates/tags/index.html.slim

@@ -5,8 +5,9 @@ div class="max-w-prose mx-auto"
   ul
     - unused_tags.each do |tag|
       == render "shared/tag", tag: tag
-    li class="py-2"
-      hr
+    - if !unused_tags.empty?
+      li class="py-2"
+        hr
     - used_tags.each do |tag|
       == render "shared/tag", tag: tag