refactor: 将MAX_FAILURES配置移至settings并更新KeyManager以使用该配置

app/core/config.py

@@ -11,6 +11,7 @@ class Settings(BaseSettings):
     SHOW_SEARCH_LINK: bool = True
     SHOW_THINKING_PROCESS: bool = True
     AUTH_TOKEN: str = ""
+    MAX_FAILURES: int = 3
 
     def __init__(self):
         super().__init__()

app/services/key_manager.py

@@ -2,6 +2,7 @@ import asyncio
 from itertools import cycle
 from typing import Dict
 from app.core.logger import get_key_manager_logger
+from app.core.config import settings
 
 logger = get_key_manager_logger()
 
@@ -13,7 +14,7 @@ class KeyManager:
         self.key_cycle_lock = asyncio.Lock()
         self.failure_count_lock = asyncio.Lock()
         self.key_failure_counts: Dict[str, int] = {key: 0 for key in api_keys}
-        self.MAX_FAILURES = 10
+        self.MAX_FAILURES = settings.MAX_FAILURES
 
     async def get_next_key(self) -> str:
         """获取下一个API key"""