fix(action): 12维操作建议写入action+技术路径action权限保护+RR区间显示修复

- batch parse_response提取【操作建议】→ save_result写action(根治: action字段只有技术路径写,
  旧'盈亏比不足不建议买入'与12维买入分析同框矛盾)
- write_holding_strategy: 技术路径不得覆盖新鲜(<20h)12维 action(与信号权威同级)
- 前端: rr_high>0即显示低~高区间(rr_low=0是合法信息: 区下沿=止损贴底即损)
- server: SEND_FILE_MAX_AGE_DEFAULT=0 禁静态缓存

server.py

@@ -76,6 +76,7 @@ from mo_data import read_portfolio, read_decisions, read_watchlist
 from mofin_db import get_conn, write_holdings_batch, write_portfolio_summary, write_watchlist_stock, write_holding_strategy
 
 app = Flask(__name__, static_folder="static", static_url_path="")
+app.config['SEND_FILE_MAX_AGE_DEFAULT'] = 0  # 禁静态缓存：前端迭代频繁，防浏览器旧版残留
 
 DATA_DIR = Path(__file__).parent / "data"
 UPLOAD_DIR = Path(__file__).parent / "uploads"