ViperEkura a1ea26d367 fix: rewrite GRPO data pipeline for offline record-level access ... - process_list_field returns List[List[int]] preserving per-response boundaries - GRPODataset rewritten to record-level __getitem__ (no windowing/stride) - grpo_collate_fn pads variable-length responses into [B, G, R] tensors - JsonlStore detects nested List[List[int]] and stores List[Tensor] per record - Store._normalize skips nested-list keys from cumsum bookkeeping - Pipeline._flush handles nested lists without cross-record flattening - Export grpo_collate_fn from astrai.dataset - 6 new GRPO tests + 2 updated builder tests, 114 total pass		2026-07-17 14:34:41 +08:00
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__init__.py	fix: rewrite GRPO data pipeline for offline record-level access	2026-07-17 14:34:41 +08:00
dataset.py	fix: rewrite GRPO data pipeline for offline record-level access	2026-07-17 14:34:41 +08:00
sampler.py	fix: reset sampler iter at epoch end so progress bar shows total after first epoch	2026-07-04 06:35:55 +08:00
storage.py	fix: rewrite GRPO data pipeline for offline record-level access	2026-07-17 14:34:41 +08:00