perf(agentx): add Qwen3.5 GB300 SGLang Pareto curve / 性能：新增 Qwen3.5 GB300 SGLang Pareto 曲线 - #2812

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Final Result: Bugbot completed review - no new issues found! ✅

Request ID: serverGenReqId_153391d6-a445-4316-bcd7-f2db229b7a1e