feat: 支持 LLM 请求超时配置

AGENTS.md

@@ -16,3 +16,4 @@
 - `LLM_API_BASE`：兼容接口地址，默认 `http://192.168.123.70:8080/v1/chat/completions`。
 - `LLM_API_KEY`：可选。
 - `LLM_MODEL`：默认模型，默认值 `default`。
+- `LLM_TIMEOUT_SECONDS`：单次请求超时，默认 `600`。

tests/test_llm_node.py

@@ -10,6 +10,22 @@ from wov_node_llm.__main__ import invoke, translate_lines
 from wov_sdk.models import InvokeRequest
 
 
+class FakeUrlOpenResponse:
+    def __init__(self, content: str) -> None:
+        self._payload = json.dumps(
+            {"choices": [{"message": {"content": content}}]}
+        ).encode("utf-8")
+
+    def read(self) -> bytes:
+        return self._payload
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *args) -> bool:
+        return False
+
+
 def _make_srt(tmp_path, count=5) -> Path:
     lines = []
     for index in range(count):
@@ -83,6 +99,38 @@ def test_translate_lines_api_error(monkeypatch) -> None:
         pass
 
 
+def test_translate_lines_default_timeout(monkeypatch) -> None:
+    captured = {}
+
+    def fake_open(request, timeout):
+        captured["timeout"] = timeout
+        return FakeUrlOpenResponse("译文一")
+
+    monkeypatch.setattr("wov_node_llm.__main__.urllib.request.urlopen", fake_open)
+    monkeypatch.setenv("LLM_API_BASE", "http://fake/v1/chat/completions")
+
+    result = translate_lines(["一"], {})
+
+    assert result == ["译文一"]
+    assert captured["timeout"] == 600
+
+
+def test_translate_lines_env_timeout(monkeypatch) -> None:
+    captured = {}
+
+    def fake_open(request, timeout):
+        captured["timeout"] = timeout
+        return FakeUrlOpenResponse("译文一")
+
+    monkeypatch.setattr("wov_node_llm.__main__.urllib.request.urlopen", fake_open)
+    monkeypatch.setenv("LLM_API_BASE", "http://fake/v1/chat/completions")
+    monkeypatch.setenv("LLM_TIMEOUT_SECONDS", "45")
+
+    translate_lines(["一"], {})
+
+    assert captured["timeout"] == 45
+
+
 def test_invoke_success(tmp_path, monkeypatch) -> None:
     source = _make_srt(tmp_path)
 

wov_node_llm/__main__.py

@@ -18,6 +18,7 @@ def translate_lines(lines: list[str], params: dict) -> list[str]:
         "http://192.168.123.70:8080/v1/chat/completions",
     )
     api_key = os.getenv("LLM_API_KEY", "")
+    request_timeout = float(os.getenv("LLM_TIMEOUT_SECONDS", "600"))
     model = str(params.get("model") or os.getenv("LLM_MODEL", "default"))
     target_language = str(params.get("target_language", "zh-CN"))
     system_prompt = (
@@ -43,7 +44,7 @@ def translate_lines(lines: list[str], params: dict) -> list[str]:
             headers=headers,
             method="POST",
         )
-        with urllib.request.urlopen(request, timeout=120) as response:
+        with urllib.request.urlopen(request, timeout=request_timeout) as response:
             payload = json.loads(response.read().decode("utf-8"))
         content = payload["choices"][0]["message"]["content"]
         translated.extend(