RL-only conversion of the released Qwen2.5-7B NLA pair (kitft/nla-qwen2.5-7b-L20)
into a layer-16 → layer-20 transcoder. 300 GRPO steps, absolute mode, warm-started
from the released AV (DCP-converted) + released AR. Code: public repo
Anwen0507/natural_language_transcoders, branch transcoder.