fix: support DDP online rollout - #38
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- Expose executor-owned training and inference model views and unwrap DDP for the scheduler - Fail fast for unsupported FSDP and torch.compile rollout configurations - Cover single-process and two-rank online GRPO and DPO execution
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This PR replaces #29 because the original commits were attributed to the wrong GitHub account. The code and validation evidence are unchanged; the commit author and committer are now correctly linked to 0z5a.
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Validation
bash scripts/pre_commit.sh --skip-deps