feat(scripts): 添加 PEP 723 脚本元数据并修复 HTTP/2 伪头过滤问题

- 为 build_studio_urls.py 和 lookup_groups.py 添加 PEP 723 依赖声明
- 修复 HTTP/2 伪头导致 requests 抛 InvalidHeader 的问题
- 添加 CDP 端口连通性预检查及启动指引

uv.lock

@@ -815,7 +815,7 @@ wheels = [
 
 [[package]]
 name = "studiolift"
-version = "0.3.1"
+version = "0.3.4"
 source = { virtual = "." }
 dependencies = [
     { name = "openpyxl" },