fix(ci): enable workflow-level archiveLogs for cockpit builds

spec.archiveLogs:false was the real kill-switch — it disabled archival for the whole workflow regardless
of the per-template MinIO-reachability fix. Flip to true so logs actually land in the argo-logs bucket.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

infra/argo/cockpit-build-deploy.yaml

@@ -17,7 +17,8 @@ metadata:
 spec:
   serviceAccountName: argo-workflow
   entrypoint: pipeline
-  archiveLogs: false          # the MinIO log sink is unreachable from ci-compile-cpu; don't fail the run on it
+  archiveLogs: true           # archive build/deploy logs to MinIO (argo-logs bucket). Reachable now that the
+                              # pods carry app.kubernetes.io/part-of: argo-workflows (MinIO ingress netpol allow).
   activeDeadlineSeconds: 1800
   ttlStrategy: { secondsAfterCompletion: 3600 }
   podGC: { strategy: OnPodCompletion }