fix(datasource): ETF代码识别支持科创板(58)和沪市新ETF(56)前缀

## 问题
科创板ETF(588000.SH)和沪市新ETF(56xxxx.SH)数据获取失败(HTTP 404)

## 根因
tushare_source.py._is_etf_code()仅识别['51','52','15','16']前缀
遗漏科创板ETF(58xxxx.SH)和沪市新ETF(56xxxx.SH)

## 修复
- 添加'58'前缀支持科创板ETF
- 添加'56'前缀支持沪市新ETF(如红利低波ETF)

## 验证
Tushare fund_daily接口实测证明支持科创板ETF:
- 588000.SH: 111条数据 ✅
- 588080.SH: 111条数据 ✅
- 000688.SH(科创板指数): 111条数据 ✅

## 附带修改
- simple_rotation.py添加--config参数支持

datasource/tushare_source.py

@@ -325,12 +325,12 @@ class TushareSource:
     
     def _is_etf_code(self, code: str) -> bool:
         """判断是否为ETF代码"""
-        # ETF代码：51xxxx.SH, 52xxxx.SH, 15xxxx.SZ, 16xxxx.SZ
+        # ETF代码：51xxxx.SH, 52xxxx.SH, 56xxxx.SH, 58xxxx.SH(科创板), 15xxxx.SZ, 16xxxx.SZ
         import re
         if not re.match(r'^\d{6}\.(SZ|SH)$', code):
             return False
         prefix = code[:2]
-        return prefix in ['51', '52', '15', '16']
+        return prefix in ['51', '52', '56', '58', '15', '16']
 
     def _get_etf_type(self, code: str) -> str:
         """

rotation/simple_rotation.py

@@ -1854,13 +1854,15 @@ if __name__ == "__main__":
         os.environ['FLASK_API_URL'] = 'https://k3s.tokenpluse.xyz'
 
     parser = argparse.ArgumentParser(description='Simple Rotation Strategy Backtest')
+    parser.add_argument('--config', type=str, default=None,
+                        help='Config file path (default: config_simple.yaml)')
     parser.add_argument('--no-detail', action='store_true',
                         help='Skip detail JSON export (faster, for daily runs)')
     parser.add_argument('--no-report', action='store_true',
                         help='Skip report PNG generation')
     args = parser.parse_args()
 
-    strategy = SimpleRotationStrategy()
+    strategy = SimpleRotationStrategy(config_path=args.config)
     result = strategy.run()
 
     if result: