User-approved shared backup for continued work by root, Claude and Grok. This independent backup branch does not update the release candidate, main, dev or tags.

Source snapshot: 0f8fdbc30ea640c764b38ee598d8f4d135c81c85, branch release-prep/2d-jet-multilevel-20261020, tree e0ab4a6b974d188e8bf1a1cedd0d2705ef27cefe. The snapshot contains 247 selected source/test/documentation files; it is not a full Git history.

horsea-required.tar.gz is the original unchanged 729332-byte pack. Its 309 payload files and embedded manifest were verified after Horsea-to-Mac transfer. It contains the saved SRT input NPZ/PTX, matching-cache/rebuilt SASS text, exact RNE scratch scripts/results/provenance, and recent gate/integration summaries. No credentials, raw caches, cubins, training outputs or unrelated data are included. Git authentication is not part of this backup.

The embedded manifest retains its original local-preservation wording. The user subsequently explicitly approved sharing this exact pack through this Gitea backup branch; the original archive and manifest bytes are preserved.

After retrieval, verify the files against SHA256SUMS before unpacking. MANIFEST.json lists each payload origin, byte size and SHA256. The archive contains regular files only and no absolute or parent-traversal paths.

Evidence limitations remain: blocked historical SASS was rebuilt, matching uniform cache usage was not bound to the old run receipt, and current-candidate GPU reproduction plus measured GPU reciprocal were not executed. This backup does not establish release acceptance or an SRT fix.