refactor: Web 服务器从 gunicorn 迁移到 uvicorn

backend/tests/unit/test_logging_settings.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from pytest import MonkeyPatch
 
-from core.config.settings import Settings
+from core.config.settings import PROJECT_ROOT, Settings
 
 
 def test_runtime_settings_defaults() -> None:
@@ -52,3 +52,9 @@ def test_runtime_settings_default_file_names_follow_service_name(
     assert settings.runtime.log_error_dir == "logs/errors"
     assert settings.runtime.log_file_name == "worker-default.log"
     assert settings.runtime.log_error_file_name == "worker-default.error.log"
+
+
+def test_project_root_points_to_repo_root() -> None:
+    assert (PROJECT_ROOT / "backend").is_dir()
+    assert (PROJECT_ROOT / "infra").is_dir()
+    assert (PROJECT_ROOT / "pyproject.toml").is_file()