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[ji-huazhong]

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[Copilot]

Pull Request Overview

This PR refactors the transfer queue functionality by consolidating duplicate code into a shared base worker class and making the TransferQueue dependency optional through extra requirements.

• Moves duplicate create_transferqueue_client method from specialized worker classes to the base worker class
• Makes TransferQueue an optional dependency via extras_require instead of a mandatory requirement
• Removes specialized worker wrapper files and updates imports to use the original worker classes directly

Reviewed Changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
verl/single_controller/base/worker.py	Added create_transferqueue_client method to base worker class
setup.py	Moved TransferQueue from required to optional dependencies under transferqueue extra
requirements_transferqueue.txt	Added dedicated requirements file for TransferQueue dependency
recipe/transfer_queue/megatron_workers.py	Removed wrapper file containing duplicate worker classes
recipe/transfer_queue/main_ppo.py	Updated imports to use original worker classes instead of wrapper classes
recipe/transfer_queue/fsdp_workers.py	Removed wrapper file containing duplicate worker classes

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