Remove duplicate step-20001 upload from main (lives on language_follow branch)

Add stage1 LA step-20001 BF16 export (final 20k checkpoint)

Document derived delta archive and local cleanup

Archive obsolete derived dataset deltas

Record removal of all known local LoRA copies

Record local LoRA source deletion

Document native LoRA step338 archive verification

Archive native LoRA step338 run

Archive retired canonical checkpoints and deploy artifacts

Add initial archive manifest

Archive retired pi05-b1kpt50-cs32 model

Add legacy archive guide

initial commit