Show each message's published date

Author: amatsuda

app/views/messages/_thread.html.erb

@@ -23,6 +23,12 @@
                 </svg>
                 <%= count = message.count_recursively %> <%= count == 1 ? 'message' : 'messages' %>
               </span>
+              <span class="inline-flex items-center gap-1">
+                <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"></path>
+                </svg>
+                <%= message.published_at.strftime('%Y/%m/%d') %>
+              </span>
             </div>
           </div>
         </div>
@@ -39,6 +45,7 @@
             <span class="px-0.5">[#<%= message.list_seq %>] <%= without_list_prefix(message.subject) %></span>
           </span>
           <span class="text-gray-500 dark:text-gray-400">— <%= message.from %></span>
+          <span class="text-gray-500 dark:text-gray-400 ml-2"><%= message.published_at.strftime('%Y/%m/%d') %></span>
           <% if message.body.present? %>
             <p class="text-xs text-gray-500 dark:text-gray-400 mt-1 line-clamp-1"><%= message.body.lines.first&.strip %></p>
           <% end %>