fix(helpdesk): edge-to-edge table in cards, larger avatar, sort by urgency

- Remove card padding, table goes full-width inside card border
- Section title gets own padding + subtle background as card header
- Avatar inline size increased from 1.6rem to 2rem
- Sort agents by critical tickets first (most urgent on top),
  then by open tickets. Unassigned queue stays last.

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

modules/helpdesk/lib/Module/Helpdesk/Service/DebitorDetailService.php

@@ -1696,6 +1696,7 @@ class DebitorDetailService
             ];
         }
 
+        // Sort: unassigned last, then critical_tickets desc, then open_tickets desc
         usort($members, static function (array $a, array $b): int {
             if ($a['support_user'] === '') {
                 return 1;
@@ -1704,6 +1705,10 @@ class DebitorDetailService
                 return -1;
             }
 
+            if ($a['critical_tickets'] !== $b['critical_tickets']) {
+                return $b['critical_tickets'] <=> $a['critical_tickets'];
+            }
+
             return $b['open_tickets'] <=> $a['open_tickets'];
         });