revert: restore horizontal scroll table layout

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

web/templates/admin/users.html

@@ -89,17 +89,6 @@
 <article class="card">
     <div class="table-scroll">
         <table class="align-middle">
-            <colgroup>
-                <col style="width:4%">
-                <col style="width:15%">
-                <col style="width:28%">
-                <col style="width:10%">
-                <col style="width:10%">
-                <col style="width:6%">
-                <col style="width:15%">
-                <col style="width:5%">
-                <col style="width:5%">
-            </colgroup>
             <thead>
                 <tr>
                     <th>ID</th>