{
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  "created_at": "2026-04-26T19:56:52.159890",
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  "data_config": {
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  "metrics": {
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  "tags": [
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  "parent_checkpoint": null,
  "notes": "Training checkpoint at iteration 500 | Phase: adaptive_mastery",
  "file_size_mb": 249.29015827178955,
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}