Feature: show suppression status on active alert rows

Active events now carry an is_suppressed boolean (added in api_status()
and the index() route via check_suppressed() against the pre-loaded
suppression list). The events table renders a muted '🔕 sup' badge next
to the severity and dims the entire row (.row-suppressed) so operators
can immediately see which firing alerts are silenced.

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

static/app.js

@@ -222,9 +222,12 @@ function updateEventsTable(events, totalActive) {
       ? `<a href="${lt.escHtml(ticketBase)}${lt.escHtml(String(e.ticket_id))}" target="_blank"
             class="ticket-link">#${e.ticket_id}</a>`
       : '–';
+    const supBadge = e.is_suppressed
+      ? `<span class="lt-badge badge-suppressed" title="Alert suppressed">🔕 sup</span>`
+      : '';
     return `
-      <tr class="row-${e.severity}">
-        <td><span class="lt-badge badge-${e.severity}">${e.severity}</span></td>
+      <tr class="row-${e.severity}${e.is_suppressed ? ' row-suppressed' : ''}">
+        <td><span class="lt-badge badge-${e.severity}">${e.severity}</span>${supBadge}</td>
         <td>${lt.escHtml(e.event_type.replace(/_/g,' '))}</td>
         <td><strong>${lt.escHtml(e.target_name)}</strong></td>
         <td>${lt.escHtml(e.target_detail || '–')}</td>