Fix MuonClip rolling checkpoint diagnostics - #127
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charlesmartin14 merged 2 commits intoAug 30, 2026
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Fixes the large MuonClip run repeatedly failing at step 250 when
checkpoint_interval_steps(250) is shorter thaneval_interval_steps(500).Rolling checkpoints now materialize finite gradient diagnostics even when no evaluation row is due, preserving deterministic resume metadata without writing initialization NaN sentinels.
Regression coverage asserts the large protocol's step-250 checkpoint requires diagnostic materialization.
Tested locally: