feat(ui-flow): fetch-audit-export-archive and run-worker-install-trial IPC (Phase 101)

Wire archive download and in-process worker trial sidecar messages.

Co-authored-by: Cursor <[email protected]>

index.js

@@ -170,6 +170,21 @@ async function dispatchUiMessage (platform, msg, hooks = {}) {
     send({ type: 'worker-install-plan', plan })
     return true
   }
+  if (t === 'fetch-audit-export-archive') {
+    const out = await platform.exportAuditExportArchive(msg.archiveId, {
+      format: msg.format
+    })
+    send({ type: 'audit-export-archive-body', ...out })
+    return true
+  }
+  if (t === 'run-worker-install-trial') {
+    const result = await platform.runIntegrationWorkerTrial({
+      templateId: msg.templateId,
+      holdMs: msg.holdMs
+    })
+    send({ type: 'worker-install-trial', result })
+    return true
+  }
   if (t === 'export-integration-worker-script') {
     const script = platform.buildIntegrationWorkerScript(msg.templateId || 'message-logger')
     send({