chore: remove us-east region from UI, charts, and region selectors

apps/web/src/views/detail.ejs

@@ -93,7 +93,6 @@
             <%
               const regionFlag = {
                 'eu-central':   '🇩🇪',
-                'us-east':      '🇺🇸',
                 'us-west':      '🇺🇸',
                 'ap-southeast': '🇸🇬',
               };
@@ -171,11 +170,11 @@
 
     // ── Interactive latency chart ──────────────────────────────────────
     const REGION_COLORS = {
-      'eu-central': '#3b82f6', 'us-east': '#10b981',
+      'eu-central': '#3b82f6',
       'us-west': '#f59e0b', 'ap-southeast': '#a78bfa', '__none__': '#6b7280'
     };
     const REGION_FLAGS = {
-      'eu-central': '🇩🇪 EU Central', 'us-east': '🇺🇸 US East',
+      'eu-central': '🇩🇪 EU Central',
       'us-west': '🇺🇸 US West', 'ap-southeast': '🇸🇬 AP Southeast'
     };
 
@@ -476,7 +475,7 @@
       if (tbody) {
         const tr = document.createElement('tr');
         tr.className = 'hover:bg-gray-800/50';
-        const regionFlags = {'eu-central':'🇩🇪','us-east':'🇺🇸','us-west':'🇺🇸','ap-southeast':'🇸🇬'};
+        const regionFlags = {'eu-central':'🇩🇪','us-west':'🇺🇸','ap-southeast':'🇸🇬'};
         const regionDisplay = ping.region ? `${regionFlags[ping.region] || '🌐'} ${ping.region}` : '—';
         tr.innerHTML = `
           <td class="px-4 py-2">${ping.up ? '<span class="text-green-400">Up</span>' : '<span class="text-red-400">Down</span>'}</td>