Initial K3 snapshot: 0.5B KDA/MLA/MoE train path

Standalone tree split from LLMRL/projects/kda. Includes Triton dt_bias backward fix, train_k3 --preset 0.5b, SFT, Docker runtime, and tests.
2026-08-25 14:43:17 +08:00
commit 584f7e9e73
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+"""Training and checkpoint helpers."""
+
+from .toy import load_ckpt, make_toy_data, save_ckpt, train_one_batch
+
+__all__ = ["load_ckpt", "make_toy_data", "save_ckpt", "train_one_batch"]