The infra-ci :latest (and :5319f03e) tags in the private registry resolved
to an OCI image index (sha256:7235cba7...) whose referenced amd64 manifest
(98f718c8) and attestation (27d5ab83) blobs returned 404 — either never
uploaded or garbage-collected. Every pipeline since P366 exited 126 on
image pull.
This comment-only Dockerfile change triggers build-ci-image.yml's path
filter, which rebuilds + pushes a fresh image.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>