fix(critical): sync baseline.muh max_model_len=100000 gpu_mem=0.90 — match computility-run.yaml

Root cause of job 105 scoring 0.0:
- baseline.muh had max_model_len=256000 + gpu_memory_utilization=0.95
- computility-run.yaml had the safe values (100000 + 0.90)
- Platform scheduler sent baseline.muh values to docker run command
- Result: OOM on KV cache allocation → service crash → 881/881 Connection refused

Diagnosis from submit日志:
- benchmark-agent marked success (model loaded OK)
- But service crashed before evaluation started
- All 881 replay requests → Connection refused
- All 5 opencompass benchmarks → 0.0 (aime, gpqa, hle, simpleqa, longbench)

Fix: sync baseline.muh to match computility-run.yaml safe values

baseline.muh

@@ -16,8 +16,8 @@
 vllm:
   model_path: /model
   served_model_name: llm
-  max_model_len: 256000
-  gpu_memory_utilization: 0.95
+  max_model_len: 100000
+  gpu_memory_utilization: 0.90
   tensor_parallel: 4
   max_num_seqs: 2
   max_num_batched_tokens: 4096