fix: 代理验证增加极验api.geetest.com连通性测试

- 原来只验证douyu.com，能过但极验不通的代理会入池后立即失败
- 现在两关验证：先过douyu.com，再过api.geetest.com
- 日志中09:04:03验证10/10全通过但极验连续失败的问题不会再出现
- 极验超时/不可达的代理在入池前就被过滤掉

core/douyu/proxy_verifier.py

@@ -10,7 +10,11 @@ from loguru import logger
 
 def verify_proxy_url(proxy_url: str, timeout: tuple = (5, 8)) -> tuple[bool, str]:
     """
-    验证代理是否可用，只验证斗鱼主站（登录的最终目标）。
+    验证代理是否可用，依次验证：
+    1. 斗鱼主站 www.douyu.com（登录目标）
+    2. 极验接口 api.geetest.com（极验验证瓶颈）
+
+    两关都过才算可用。
 
     Returns:
         (是否可用, 消息)
@@ -18,6 +22,8 @@ def verify_proxy_url(proxy_url: str, timeout: tuple = (5, 8)) -> tuple[bool, str
     from utils.http_logger import log_http
 
     proxies = {'http': proxy_url, 'https': proxy_url}
+
+    # ── 第1关：斗鱼主站 ──
     started = _time.monotonic()
     try:
         response = requests.get(
@@ -30,10 +36,9 @@ def verify_proxy_url(proxy_url: str, timeout: tuple = (5, 8)) -> tuple[bool, str
         response.raise_for_status()
         log_http(
             category="proxy_verify", method="GET", url="https://www.douyu.com",
-            status_code=response.status_code, response_body=f"代理可用: {proxy_url}",
+            status_code=response.status_code, response_body=f"斗鱼主站可达: {proxy_url}",
             duration=elapsed, proxy=proxy_url, tag="proxy_verify",
         )
-        return True, '代理可用 → 斗鱼主站'
     except Exception as exc:
         elapsed = _time.monotonic() - started
         err_msg = str(exc)
@@ -43,7 +48,7 @@ def verify_proxy_url(proxy_url: str, timeout: tuple = (5, 8)) -> tuple[bool, str
             detail = '连接超时'
         else:
             detail = type(exc).__name__
-        logger.debug(f"代理验证失败 [{proxy_url}]: {detail}")
+        logger.debug(f"代理验证失败 [{proxy_url}]: 斗鱼主站不可达: {detail}")
         log_http(
             category="proxy_verify", method="GET", url="https://www.douyu.com",
             duration=elapsed, error=f"[{proxy_url}] {detail}: {err_msg[:200]}",
@@ -51,6 +56,39 @@ def verify_proxy_url(proxy_url: str, timeout: tuple = (5, 8)) -> tuple[bool, str
         )
         return False, detail
 
+    # ── 第2关：极验接口 ──
+    started = _time.monotonic()
+    try:
+        response = requests.get(
+            'https://api.geetest.com',
+            proxies=proxies,
+            timeout=timeout,
+            headers={'User-Agent': 'Mozilla/5.0'},
+            # geetest 首页可能返回 4xx，只要能连上就算通
+            allow_redirects=True,
+        )
+        elapsed = _time.monotonic() - started
+        log_http(
+            category="proxy_verify", method="GET", url="https://api.geetest.com",
+            status_code=response.status_code, response_body=f"代理可用: {proxy_url}",
+            duration=elapsed, proxy=proxy_url, tag="proxy_verify",
+        )
+        return True, '代理可用 → 斗鱼+极验'
+    except Exception as exc:
+        elapsed = _time.monotonic() - started
+        err_msg = str(exc)
+        if 'timed out' in err_msg.lower():
+            detail = '极验接口超时'
+        else:
+            detail = f'极验不可达: {type(exc).__name__}'
+        logger.debug(f"代理验证失败 [{proxy_url}]: 斗鱼可达但{detail}")
+        log_http(
+            category="proxy_verify", method="GET", url="https://api.geetest.com",
+            duration=elapsed, error=f"[{proxy_url}] {detail}: {err_msg[:200]}",
+            proxy=proxy_url, tag="proxy_verify",
+        )
+        return False, detail
+
 
 def verify_proxies_concurrent(
     proxy_urls: list[str],