fix: 支持从任意路径调用 lyxy_document_reader.py

- 从 __file__ 动态计算项目根目录
- 使用绝对路径引用 bootstrap.py
- 设置正确的 PYTHONPATH 和 cwd
- 添加路径解析测试

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

scripts/lyxy_document_reader.py

@@ -8,8 +8,13 @@ import subprocess
 import sys
 from pathlib import Path
 
+# 确定项目根目录和脚本路径
+script_file = Path(__file__).resolve()
+scripts_dir = script_file.parent
+project_root = scripts_dir.parent
+bootstrap_path = str(scripts_dir / "bootstrap.py")
+
 # 将 scripts/ 目录添加到 sys.path
-scripts_dir = Path(__file__).resolve().parent
 if str(scripts_dir) not in sys.path:
     sys.path.append(str(scripts_dir))
 
@@ -96,7 +101,7 @@ def main():
     # 生成 uv 命令参数列表
     uv_args = generate_uv_args(
         dependencies=dependencies,
-        script_path="scripts/bootstrap.py",
+        script_path=bootstrap_path,
         python_version=python_version,
         include_pyarmor=True
     )
@@ -106,10 +111,10 @@ def main():
 
     # 设置环境变量
     env = os.environ.copy()
-    env["PYTHONPATH"] = "."
+    env["PYTHONPATH"] = str(project_root)
 
     # 自启动：使用 subprocess 替代 execvpe（Windows 兼容）
-    result = subprocess.run(uv_args, env=env)
+    result = subprocess.run(uv_args, env=env, cwd=str(project_root))
     sys.exit(result.returncode)