ci(hermes-agent-image): pull the reviewed base through the local mirror

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

ci/Jenkinsfile.hermes-agent-image

@@ -209,6 +209,7 @@ spec:
               unset HARBOR_USER HARBOR_PASSWORD auth
               trap '/busybox/rm -f "${config_path}"' EXIT HUP INT TERM
               /kaniko/executor \
+                --registry-mirror=registry.bstein.dev \
                 --context="dir://${WORKSPACE}" \
                 --dockerfile="${WORKSPACE}/dockerfiles/Dockerfile.hermes-agent" \
                 --destination="${destination}" \