fix: replace placeholder SVG with proper lock icon for suspended state

Author: ddrayko

public/js/app.js

@@ -2039,7 +2039,7 @@ async function renderServerDetail(serverId) {
       <div id="server-tab-actions" class="tab-content" style="display:${activeTab === 'actions' ? 'block' : 'none'}">
         ${isSuspended ? html`
         <div style="text-align:center;padding:48px 24px">
-          <svg width="64" height="64" viewBox="0 0 24 24" fill="none" stroke="var(--accent-red)" stroke-width="1.5" style="margin-bottom:16px"><circle cx="12" cy="12" r="10"/><line x1="12" y1="8" x2="12" y2="12"/><line x1="12" y1="16" x2="12.01" y2="16"/></svg>
+          <svg width="64" height="64" viewBox="0 0 24 24" fill="none" stroke="var(--accent-red)" stroke-width="1.5" style="margin-bottom:16px"><rect x="3" y="11" width="18" height="11" rx="2" ry="2"/><path d="M7 11V7a5 5 0 0110 0v4"/></svg>
           <h2 style="margin:0 0 8px 0;color:var(--text-primary)">Server Suspended</h2>
           <p style="color:var(--text-secondary);font-size:0.95rem;margin:0 0 4px 0">This server has been suspended. No actions are available.</p>
           <p style="color:var(--text-secondary);font-size:0.95rem;margin:0">Please contact support via <a href="https://discord.zero-host.org" target="_blank" style="color:var(--accent-1);text-decoration:underline">Discord</a> for assistance.</p>