优化代码格式和异常处理

- 修复异常处理链，使用from语法保留原始异常
- 格式化代码以符合项目规范
- 优化导入模块的顺序

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

bot.py

@@ -101,7 +101,6 @@ def load_env():
         RuntimeError(f"ENVIRONMENT 配置错误，请检查 .env 文件中的 ENVIRONMENT 变量及对应 .env.{env} 是否存在")
 
 
-
 def scan_provider(env_config: dict):
     provider = {}
 
@@ -164,12 +163,13 @@ async def uvicorn_main():
     uvicorn_server = server
     await server.serve()
 
+
 def check_eula():
     eula_confirm_file = Path("eula.confirmed")
     privacy_confirm_file = Path("privacy.confirmed")
     eula_file = Path("EULA.md")
     privacy_file = Path("PRIVACY.md")
-    
+
     eula_updated = True
     eula_new_hash = None
     privacy_updated = True
@@ -218,15 +218,15 @@ def check_eula():
         print('输入"同意"或"confirmed"继续运行')
         while True:
             user_input = input().strip().lower()
-            if user_input in ['同意', 'confirmed']:
+            if user_input in ["同意", "confirmed"]:
                 # print("确认成功，继续运行")
                 # print(f"确认成功，继续运行{eula_updated} {privacy_updated}")
                 if eula_updated:
                     print(f"更新EULA确认文件{eula_new_hash}")
-                    eula_confirm_file.write_text(eula_new_hash,encoding="utf-8")
+                    eula_confirm_file.write_text(eula_new_hash, encoding="utf-8")
                 if privacy_updated:
                     print(f"更新隐私条款确认文件{privacy_new_hash}")
-                    privacy_confirm_file.write_text(privacy_new_hash,encoding="utf-8")
+                    privacy_confirm_file.write_text(privacy_new_hash, encoding="utf-8")
                 break
             else:
                 print('请输入"同意"或"confirmed"以继续运行')
@@ -234,19 +234,20 @@ def check_eula():
     elif eula_confirmed and privacy_confirmed:
         return
 
+
 def raw_main():
     # 利用 TZ 环境变量设定程序工作的时区
     # 仅保证行为一致，不依赖 localtime()，实际对生产环境几乎没有作用
     if platform.system().lower() != "windows":
         time.tzset()
-        
+
     check_eula()
     print("检查EULA和隐私条款完成")
     easter_egg()
     init_config()
     init_env()
     load_env()
-    
+
     # load_logger()
 
     env_config = {key: os.getenv(key) for key in os.environ}
@@ -278,7 +279,7 @@ if __name__ == "__main__":
         app = nonebot.get_asgi()
         loop = asyncio.new_event_loop()
         asyncio.set_event_loop(loop)
-        
+
         try:
             loop.run_until_complete(uvicorn_main())
         except KeyboardInterrupt:
@@ -286,7 +287,7 @@ if __name__ == "__main__":
             loop.run_until_complete(graceful_shutdown())
         finally:
             loop.close()
-            
+
     except Exception as e:
         logger.error(f"主程序异常: {str(e)}")
         if loop and not loop.is_closed():