优化1

app/services/browser_pool.py

@@ -25,6 +25,7 @@ class BrowserPool:
     def __init__(self, settings: Settings):
         self._settings = settings
         self._playwright: Any | None = None
+        self._playwright_cm: Any | None = None  # stealth 钩子包装的 playwright 上下文管理器
         self._browser: Any | None = None
         self._semaphore = asyncio.Semaphore(settings.max_site_concurrency)
         self._restart_lock = asyncio.Lock()
@@ -66,15 +67,29 @@ class BrowserPool:
 
             headless = self._settings.browser_headless_effective
             logger.info(
-                "启动浏览器：enabled=%s headless=%s keep_open_on_error=%s channel=%s proxy=%s env=%s",
+                "启动浏览器：enabled=%s headless=%s keep_open_on_error=%s channel=%s proxy=%s stealth=%s env=%s",
                 self._settings.browser_enabled,
                 headless,
                 self._settings.browser_keep_open_on_error_effective,
                 self._settings.browser_channel,
                 bool(self._settings.proxy_server),
+                self._settings.browser_stealth_enabled,
                 self._settings.app_env,
             )
-            self._playwright = await async_playwright().start()
+            if self._settings.browser_stealth_enabled:
+                # 用 playwright-stealth 钩子包装 playwright：后续 new_context/new_page
+                # 会自动应用 stealth（含 HTTP sec-ch-ua 客户端提示），并令 navigator.languages
+                # 与日语环境保持一致，避免指纹自相矛盾。
+                from playwright_stealth import Stealth
+
+                stealth = Stealth(
+                    navigator_languages_override=("ja-JP", "ja", "en-US", "en"),
+                )
+                self._playwright_cm = stealth.use_async(async_playwright())
+                self._playwright = await self._playwright_cm.__aenter__()
+            else:
+                self._playwright_cm = None
+                self._playwright = await async_playwright().start()
             chromium = self._playwright.chromium
             launch_args = [ 
                 "--disable-blink-features=AutomationControlled",
@@ -138,13 +153,20 @@ class BrowserPool:
                 await self._browser.close()
             except Exception:
                 logger.exception("关闭浏览器实例失败")
-        if self._playwright is not None:
+        if self._playwright_cm is not None:
+            # stealth 钩子包装：通过上下文管理器退出来停止 playwright
+            try:
+                await self._playwright_cm.__aexit__(None, None, None)
+            except Exception:
+                logger.exception("停止 Playwright（stealth 包装）运行时失败")
+        elif self._playwright is not None:
             try:
                 await self._playwright.stop()
             except Exception:
                 logger.exception("停止 Playwright 运行时失败")
         self._browser = None
         self._playwright = None
+        self._playwright_cm = None
         self._started = False
 
     async def _restart_browser(self, reason: str) -> None:
@@ -251,9 +273,11 @@ class BrowserPool:
                 logger.exception("关闭旧的保留调试上下文失败")
 
     async def _build_context_obj(self, storage_state: dict[str, Any] | None) -> Any:
-        """创建浏览器上下文（含断链重试与 stealth），仅负责创建本身。
+        """创建浏览器上下文（含断链重试），仅负责创建本身。
 
         计入回收阈值统计；不负责并发信号量与关闭，由调用方管理生命周期。
+        启用 stealth 时，playwright 已被 use_async 钩子包装，new_context 会自动
+        应用 stealth（含 HTTP sec-ch-ua），此处无需再手动 apply。
         """
         context = None
         for attempt in range(2):
@@ -275,15 +299,6 @@ class BrowserPool:
 
         # 上下文创建成功，计入回收阈值统计
         self._contexts_since_start += 1
-
-        if self._settings.browser_stealth_enabled:
-            try:
-                from playwright_stealth import Stealth
-
-                await Stealth().apply_stealth_async(context)
-            except Exception as e:
-                logger.warning("应用 playwright-stealth 失败，隐身模式未生效, err=%s", e)
-
         return context
 
     @staticmethod