feat(web): show first-RE time on up page, drop decoupled folder badges

reaction_board/web/static/views/up.js

@@ -49,10 +49,10 @@ export async function renderUp(root, { params, query }) {
           <h1>${escapeHtml(up.up_name || `UP ${mid}`)}</h1>
           <div class="detail-meta">
             <span>mid ${up.up_mid}</span>
+            <span>首RE时间 ${escapeHtml(formatDate(up.first_pubdate))}</span>
             ${up.blacklisted ? badge("黑名单 · 仅影响发现", "warning") : ""}
-            ${(up.folders || []).map((title) => badge(title)).join("")}
           </div>
-          <p class="section-note">首次发布 ${escapeHtml(formatDate(up.first_pubdate))} · 最近发布 ${escapeHtml(formatDate(up.latest_pubdate))}</p>
+          <p class="section-note">最近发布 ${escapeHtml(formatDate(up.latest_pubdate))}</p>
         </div>
       </div>
     </div>