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@@ -159,7 +159,10 @@ job but remain reported. No intermediate validation, test token, development
pilot endpoint, or cross-method setting is used by the selector.
The per-job cap is 48 hours. Only timan107 physical GPUs 5 and 7 are allowed.
-A launch manifest must record the physical GPU UUID, source commit, tracked
+Before either shard starts, one immutable launch lock binds the complete
+27-job registry hash to the source commit, tracked-file hashes, environment
+freeze, and allowed physical GPUs. Every subsequent cell rechecks that source
+lock. Its manifest records the physical GPU UUID, source commit, tracked
dirty state, environment freeze, dataset hashes, arguments, peak memory,
wall time, and exit state. A failure advances the shard rather than deleting
the cell.