{
 "date": "2026-10-21",
 "change": "per-CTA arrival release in directed exit (no sender grid sync)",
 "native_source_sha256": "bd4db4da3bde4584d6679135eb23ff17d7553e3517d4e27b294701ad9b409670",
 "scope": "4 x H100, 2A2F, one NVLink domain",
 "correctness": {
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  "ratios": "--ffn-ranks 1 and 3, BF16/FP8 small and large (32 experts per FFN)",
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 "arms": {
  "afd": "role path with per-CTA exit",
  "grid_sync_exit": "AFDEP_GRID_SYNC_EXIT=1",
  "masked": "role_aware=False"
 },
 "history": "An earlier screen of this change (validation-cta-exit-rejected.json) ran HEAD in both arms and is void; a tree-isolated re-run (PYTHONSAFEPATH=1, distinct digests 3d68dba2 vs 7f2dece7) first measured -9.4% at one token."
}