* improve fsdp shard merging
* improve logging
* update information on merging and inferencing GPT-OSS
* cleanup readme
* automate cleanup of FSDP prefix
* import GRPO only if necessary
* only modify config.json on rank0
* merge final checkpoint at end of training
* prevent circular import
* Fix saving for sharded state dict
* devx, move merged to output dir
* move import back to top
* Fix stuck merge
* fix conditionals from pr feedback and add test
