[BUG] Why are the checkpoints saved during deepspeed-zero0 training larger than the safetensors of the original base model?

Describe the bug
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To Reproduce
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2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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ds_report output
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Screenshots
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System info (please complete the following information):

• OS: [e.g. Ubuntu 18.04]
• GPU count and types [e.g. two machines with x8 A100s each]
• Interconnects (if applicable) [e.g., two machines connected with 100 Gbps IB]
• Python version
• Any other relevant info about your setup

Launcher context
Are you launching your experiment with the deepspeed launcher, MPI, or something else?

Docker context
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Additional context
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The report names no source files, tests, or concrete reproduction steps; start by collecting the requested ds_report output and complete checkpoint details. Compare the deepspeed-zero0 checkpoint with the original safetensors and document a reproducible case, with the size discrepancy explained or a focused failing test identified as done.