feat: refactor model inference architecture

- Unified inference logic into models/inference.py
- Added InferenceManager for handling DLinear, N-BEATS, and TTM-R2 models
- Updated prediction_service.py and auto_trade_polymarket.py to use the new manager
- Fixed dependency issues (torch, transformers)
- Resolved logger duplication issue
- Verified with test_models_feb_2026.py

start_system.py

@@ -106,7 +106,7 @@ def main():
     
     # 2. 启动自动交易程序
     # 使用 -u 参数禁用输出缓冲
-    trade_cmd = f"{python_exec} -u auto_trade_polymarket.py"
+    trade_cmd = f"{python_exec} -u trader/auto_trade_polymarket.py"
     trade_process = start_process(trade_cmd, "Polymarket 自动交易程序")
     
     log("系统启动完成！", GREEN)