Harden agent-builder Knative rollout

deploy/20-deployment.yaml

@@ -5,6 +5,7 @@ metadata:
   namespace: agents
   annotations:
     argocd.argoproj.io/sync-options: ServerSideApply=true
+    serving.knative.dev/rollout-duration: "120s"
   labels:
     app: agent-builder
     a2a/managed-by: control-plane
@@ -58,6 +59,11 @@ spec:
                 secretKeyRef: {name: platform-secrets, key: replay_signing_key}
             - name: A2A_CP_URL
               value: http://control-plane.control-plane.svc.cluster.local
+          startupProbe:
+            httpGet: {path: /healthz, port: 8000}
+            periodSeconds: 5
+            timeoutSeconds: 3
+            failureThreshold: 60
           readinessProbe:
             httpGet: {path: /healthz, port: 8000}
             initialDelaySeconds: 8