From 855df24eba7266d02b77cc6344cfc69ee9f12c2d Mon Sep 17 00:00:00 2001
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Date: Mon, 2 Mar 2026 13:12:04 +0000
Subject: [PATCH] =?UTF-8?q?feat:=20signal-engine=E9=85=8D=E7=BD=AE?=
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- 每60轮(~15分钟)自动重读paper_config.json
- 检测enabled_strategies变更时输出日志
- 避免频繁重启导致:
  - 4h历史数据重新回灌
  - CVD/VWAP窗口状态丢失
  - 45秒warmup+10分钟冷却期
  - 信号准确度下降
---
 backend/signal_engine.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/backend/signal_engine.py b/backend/signal_engine.py
index 7605339..920b61f 100644
--- a/backend/signal_engine.py
+++ b/backend/signal_engine.py
@@ -1058,7 +1058,12 @@ def main():
                 warmup_cycles -= 1
                 if warmup_cycles == 0:
                     logger.info("冷启动保护期结束，模拟盘开仓已启用")
+            # 每60轮(约15分钟)热加载配置，不需要重启
             if cycle % 60 == 0:
+                old_strategies = list(PAPER_ENABLED_STRATEGIES)
+                load_paper_config()
+                if list(PAPER_ENABLED_STRATEGIES) != old_strategies:
+                    logger.info(f"📋 配置热加载: enabled_strategies={PAPER_ENABLED_STRATEGIES}")
                 for sym, state in states.items():
                     logger.info(
                         f"[{sym}] 状态: CVD_fast={state.win_fast.cvd:.1f} "