Improve raw command handlers and remove dayjs dependency (switched to native Intl.DateTimeFormat API)

source/templates/classic/partials/music.ejs

@@ -27,7 +27,7 @@
                     <div class="name"><%= name %></div>
                     <div class="artist"><%= artist %></div>
                     <% if (plugins.music.played_at) { %>
-                        <div class="played-at"><%= played_at %></div>
+                        <div class="played-at">[played at] <%= played_at %></div>
                     <% } %>
                   </div>
                 </div>