vllm

41f6a766 - Address review: register VLLM_DISABLE_PUSH_ALLREDUCE in envs.py

Address review: register VLLM_DISABLE_PUSH_ALLREDUCE in envs.py Register the push allreduce feature toggle env var in the central envs.py registry so it is validated on startup and follows the standard vllm env var pattern. Default is False (push allreduce enabled); set to 1 to disable. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>