feat: Admin 用户列表禁言、认证与调积分

SSR /admin/users 复用 ListUsers/BanUser/SetVerified/AdminAdjust，并回写 02/06/09 指针至徽章。

Co-authored-by: Cursor <cursoragent@cursor.com>

templates/admin/nav.tmpl

@@ -4,6 +4,7 @@
   <a href="/admin/boards"{{if eq .NavActive "boards"}} class="is-active"{{end}}>板块</a>
   <a href="/admin/moderation"{{if eq .NavActive "moderation"}} class="is-active"{{end}}>审核</a>
   <a href="/admin/reports"{{if eq .NavActive "reports"}} class="is-active"{{end}}>举报</a>
+  <a href="/admin/users"{{if eq .NavActive "users"}} class="is-active"{{end}}>用户</a>
   <a href="/admin/trash"{{if eq .NavActive "trash"}} class="is-active"{{end}}>回收站</a>
   <a href="/admin/friend-links"{{if eq .NavActive "friend-links"}} class="is-active"{{end}}>友链</a>
   <a href="/admin/pages"{{if eq .NavActive "pages"}} class="is-active"{{end}}>单页</a>