GSAI-ML/LLaDA-8B-Instruct unlearned on WMDP-bio hazardous knowledge with LRCU (Localized Recall-Capped Unlearning): a saturating per-token recall cap on a causally-localized block band (blocks 5-7) + bounded Min-SNR (low-$t$) trajectory weighting + CE retain anchor, with no reference model.

WMDP-bio accuracy drops to near chance while MMLU is largely preserved.