[DEPLOY] Complete submission: baseline + all optimizations

Adds ALL files needed for Dockerfile build:
  - qwen3_6_scripts/ (baseline patches + our optimizations)
  - vllm/ (full vllm package)
  - paged_attention_v2_pytorch.py (V2 with single-bmm optimization)
  - Dockerfile + computility-run.yaml

Our optimizations vs baseline:
  1. paged_attn.py: pre-gathered context KV (eliminates 194 gather calls),
     Triton try/fallback, V2 heuristic, threshold 32K→64K
  2. paged_attention_v2_pytorch.py: fills NotImplementedError,
     single-bmm Phase 1 (195 launches → 3)
  3. patch_enable_triton.py: HAS_TRITON=True with safety fallback
  4. patch_triton_tuning.py: BLOCK=64, NUM_WARPS=4 for BI-V100
  5. computility-run.yaml: gpu-memory-utilization 0.9→0.95,
     max-num-batched-tokens 8192→16384

This repo can now be submitted to dev.modelhub.org.cn as-is.

vllm/assets/base.py

@@ -0,0 +1,39 @@
+from functools import lru_cache
+from pathlib import Path
+from typing import Optional
+
+import vllm.envs as envs
+from vllm.connections import global_http_connection
+from vllm.envs import VLLM_IMAGE_FETCH_TIMEOUT
+
+vLLM_S3_BUCKET_URL = "https://vllm-public-assets.s3.us-west-2.amazonaws.com"
+
+
+def get_cache_dir() -> Path:
+    """Get the path to the cache for storing downloaded assets."""
+    path = Path(envs.VLLM_ASSETS_CACHE)
+    path.mkdir(parents=True, exist_ok=True)
+
+    return path
+
+
+@lru_cache
+def get_vllm_public_assets(filename: str,
+                           s3_prefix: Optional[str] = None) -> Path:
+    """
+    Download an asset file from ``s3://vllm-public-assets``
+    and return the path to the downloaded file.
+    """
+    asset_directory = get_cache_dir() / "vllm_public_assets"
+    asset_directory.mkdir(parents=True, exist_ok=True)
+
+    asset_path = asset_directory / filename
+    if not asset_path.exists():
+        if s3_prefix is not None:
+            filename = s3_prefix + "/" + filename
+        global_http_connection.download_file(
+            f"{vLLM_S3_BUCKET_URL}/{filename}",
+            asset_path,
+            timeout=VLLM_IMAGE_FETCH_TIMEOUT)
+
+    return asset_path