chore: 去掉 active_ip 的临时 debug log(已通过限流验证)

smoke_limit2 验证成功(临时 kick 真实 IP + 30 假 IP → 真实 IP 登录返 429,
限流逻辑按设计工作)。
清理掉 [CHECK] [TOUCH_DEP] stderr 调试 log,恢复代码干净。

backend/app/services/active_ip.py

@@ -43,23 +43,17 @@ def get_client_ip(request: Request) -> str:
 
     仅在配置 trust_x_forwarded_for=True 时信任 1+2,否则只用 3。
     """
-    import sys
-    xff_raw = request.headers.get("x-forwarded-for")
-    xri_raw = request.headers.get("x-real-ip")
-    client_host = request.client.host if request.client else None
-    print(f"[GET_CLIENT_IP] xff={xff_raw!r} xri={xri_raw!r} client_host={client_host!r} trust={settings.trust_x_forwarded_for}", file=sys.stderr, flush=True)
     if settings.trust_x_forwarded_for:
-        xff = xff_raw
+        xff = request.headers.get("x-forwarded-for")
         if xff:
             ip = xff.split(",")[0].strip()
             if ip:
-                print(f"[GET_CLIENT_IP] -> use xff split[0] = {ip!r}", file=sys.stderr, flush=True)
                 return ip
-        xri = xri_raw
+        xri = request.headers.get("x-real-ip")
         if xri:
             return xri.strip()
-    if client_host:
+    if request.client and request.client.host:
-        return client_host
+        return request.client.host
     return "unknown"
 
 
@@ -84,8 +78,6 @@ async def check_or_register_login_ip(ip: str) -> None:
     r = get_redis()
     now = int(time.time())
     limit = settings.site_max_active_ips
-    import sys
-    print(f"[CHECK] ip={ip!r} limit={limit}", file=sys.stderr, flush=True)
 
     # 看 IP 是否已在 set
     existing = await r.zscore(REDIS_KEY, ip)
@@ -166,13 +158,7 @@ async def touch_ip_dependency(request: Request) -> None:
     不会失败(吞掉异常),避免 Redis 抖动影响正常请求。
     """
     try:
-        import sys
         ip = get_client_ip(request)
-        # 临时诊断:看实际 IP 提取
-        xff = request.headers.get("x-forwarded-for")
-        xri = request.headers.get("x-real-ip")
-        client_host = request.client.host if request.client else None
-        print(f"[TOUCH_DEP] ip={ip!r} xff={xff!r} xri={xri!r} client_host={client_host!r}", file=sys.stderr, flush=True)
         await touch_active_ip(ip)
     except Exception as e:  # noqa: BLE001
         logger.debug("touch_active_ip failed (ignored): %s", e)