chore(torghut): promote notebook image sha-cc502658668cf0c220dc1c2c0110b346f0504c8c

[gregkonush]

Summary

• Promote the immutable multi-architecture Torghut notebook image built from cc502658668cf0c220dc1c2c0110b346f0504c8c.
• Update only the digest-pinned JupyterHub single-user image.

Related Issues

None.

Testing

• The source commit passed notebook fixture execution and manifest contracts.
• The release workflow verified linux/amd64 and linux/arm64 for sha256:e8104998625ee80b8231e79542df2e945fdf47af03b1be1d2230edbe8483a9a9.

Breaking Changes

None.

Checklist

• The single-user image is immutable and multi-architecture.
• Promotion changes only the notebook image digest.
• PVCs and read-only credentials are unchanged.

[gregkonush]

Closing as superseded. This notebook promotion is conflicting, its release checks failed, and it is not part of the current Bayn activation lane. A future notebook change must produce a fresh source-matching promotion.