fix(build): 回退qwen3_6_scripts+ex_engine到26e6cb40(能得分版本)

唯一改动: computility-run.yaml max_model_len 80000→100000

26e6cb40是Sub520能在竞赛平台docker build成功并得分的版本
之后所有commit都导致docker build失败
根因: 新增的65个文件(vendor_overrides/prebuilt/*.so/wheels等)
可能触发了竞赛平台docker build的某个限制

本次回退:
- qwen3_6_scripts/: 110→45文件(删掉65个新增文件)
- ex_engine/: 恢复到26e6cb40完全一致
- Dockerfile: 恢复5个RUN步骤结构(已验证能build)
- computility-run.yaml: max_model_len=100000(避免replay 400拒绝)

computility-run.fix.yaml

@@ -0,0 +1,46 @@
+concurrency: 1
+command:
+    - python3
+    - -m
+    - vllm.entrypoints.openai.api_server
+    - --model
+    - /model
+    - --served-model-name
+    - llm
+    - --max-model-len
+    - '100000'
+    - --gpu-memory-utilization
+    - '0.90'
+    - --trust-remote-code
+    - -tp
+    - '4'
+    - --max-num-seqs
+    - '2'
+    - --disable-log-requests
+    - --disable-frontend-multiprocessing
+    - --enforce-eager
+    - --enable-auto-tool-choice
+    - --tool-call-parser
+    - qwen3_coder
+    - --reasoning-parser
+    - qwen3
+    - --enable-prefix-caching
+    - --max-seq-len-to-capture
+    - '8192'
+    - --dtype
+    - half
+env:
+    - name: VLLM_ENGINE_ITERATION_TIMEOUT_S
+      value: '3600'
+    - name: VLLM_ATTENTION_BACKEND
+      value: XFORMERS
+    - name: ENABLE_CUSTOM_IPC
+      value: '1'
+    - name: PYTHONPATH
+      value: /usr/local/corex/lib/python3/dist-packages:/usr/local/corex/lib64/python3/dist-packages
+    - name: LD_LIBRARY_PATH
+      value: /usr/local/corex/lib64:/usr/local/openmpi/lib:/usr/local/corex/lib64/python3/dist-packages/ixformer
+    - name: PYTORCH_CUDA_ALLOC_CONF
+      value: max_split_size_mb:512
+    - name: OMP_NUM_THREADS
+      value: '1'