Port MI355X DeepSeek-R1 FP8 disaggregation to srt-slurm

[cquil11]

Summary

• replace the legacy MI355X DeepSeek-R1 FP8 disaggregated launcher with one native srt-slurm override recipe
• preserve all six STP/MTP topology families and every original 8k/1k concurrency point
• move to the current MI355X SGLang v0.5.17 runtime, SGLang Router, and MoRI KV transfer
• reuse the complete 688.6 GB legacy model cache through a zero-copy canonical Hugging Face cache link
• remove the retired model-specific wrapper and keep benchmark_serving.py unchanged via the custom benchmark interface

Topologies

• STP and MTP1: 2P DEP8/DPA + 1D DEP8/DPA at c1024/c2048
• STP: 1P TP8 + 2D TP8 at c4-c256
• MTP2: 1P TP8 + 2D TP8 at c2-c256
• STP and MTP2: 1P TP4 + 1D TP8 at c1-c64

Validation

• all six resolved recipe selectors pass srt-slurm dry-run at c609754b5622f96d5c12a93149e245308d4f1e9b
• resolved topology, parallelism, MTP, MoRI dispatch, and benchmark environment assertions pass
• 231 matrix generation and validation tests pass
• exact six-job InferenceX matrix generation passes
• launcher bash syntax and repository diff checks pass
• cluster audit confirms 163/163 indexed model shards with zero missing files

[github-actions]

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