fix(helpdesk): use auto table layout with max-width:0 ellipsis pattern

Fix missing closing brace in CSS. Use width:100% + max-width:0 on
description column for consistent ellipsis across all agent tables.
Narrow columns (ticket no, customer, date) use white-space:nowrap to
keep natural width. No fixed percentages — fully responsive.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

modules/helpdesk/web/js/helpdesk-team.js

@@ -82,7 +82,7 @@ if (container) {
     tr.appendChild(noCell);
 
     // Customer name as link to debitor (link uses customer_no)
-    const customerCell = h('td');
+    const customerCell = h('td', 'helpdesk-team-ticket-customer');
     if (debitorBaseUrl && t.customer_no) {
       const a = h('a', '', t.customer_name || t.customer_no);
       a.href = debitorBaseUrl + encodeURIComponent(t.customer_no);