fix: 清除硬编码API Key与机器特定路径，改用环境变量+混合式路径解析

tests/e2e/test_pipeline.py

@@ -1,7 +1,8 @@
 """E2E Tests for COBOL->Java Verification Platform
 
-Run: cd D:/cobol-java/v3-gstack-code-gen && python -m pytest tests/e2e/ -v
-Requires: web server on http://127.0.0.1:8000, WSL available
+Run: cd <project-root> && python -m pytest tests/e2e/ -v
+Requires: web server on http://127.0.0.1:8000, WSL available,
+          DEEPSEEK_API_KEY set in the environment.
 """
 import json, os, sys, time, uuid, shutil
 from datetime import datetime
@@ -50,10 +51,19 @@ def create_task(copybook: str, cobol: str, java_dir: str, mapping: str, runner="
     return tid
 
 
+def _wsl_path(p: Path) -> str:
+    """Convert a Windows path to its WSL /mnt/<drive> equivalent."""
+    s = str(p).replace("\\", "/")
+    if len(s) > 1 and s[1] == ":":
+        return f"/mnt/{s[0].lower()}{s[2:]}"
+    return s
+
+
 def run_worker_for_task(tid: str):
+    api_key = os.environ.get("DEEPSEEK_API_KEY", "")
     script = (
-        "cd /mnt/d/cobol-java/v3-gstack-code-gen && "
-        "export LLM_API_KEY=sk-ca4961087c7f4aefa8ed0fc6f3d02329 && "
+        f"cd {_wsl_path(PROJECT)} && "
+        f"export LLM_API_KEY='{api_key}' && "
         "export LLM_API_BASE=https://api.deepseek.com/v1 && "
         "export LLM_MODEL=deepseek-chat && "
         f"python3 -c \"exec(open('write_result.py').read().replace('ec17bf32','{tid}'))\""