支持自定义端口

tests/test_api.py

@@ -49,6 +49,7 @@ class FakeClient:
 def client_and_provider(tmp_path: Path) -> tuple[TestClient, FakeClient]:
     provider = FakeClient()
     settings = Settings(
+        port=8000,
         api_key=None,
         base_url="https://api.deepseek.com",
         model="deepseek-v4-flash",
@@ -66,6 +67,18 @@ def create_session(client: TestClient, **body: str) -> str:
     return response.json()["session_id"]
 
 
+def test_settings_load_api_key_from_dotenv(
+    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    monkeypatch.chdir(tmp_path)
+    monkeypatch.delenv("DEEPSEEK_API_KEY", raising=False)
+    (tmp_path / ".env").write_text("DEEPSEEK_API_KEY=test-key\n")
+
+    settings = Settings.from_env()
+
+    assert settings.api_key == "test-key"
+
+
 def test_create_session_uses_default_prompt(
     client_and_provider: tuple[TestClient, FakeClient], tmp_path: Path
 ) -> None: