feat: 港股ATR波动率止损校验

- 新增 is_hk_stock(code): 港股判断(5位代码)
- 新增 calc_atr(code): 腾讯API K线→ATR(14)计算
- 港股止损增加ATR校验：止损距现价不得小于1×ATR
  技术位仍为主依据，ATR仅作为港股高波动下的间距底线
  A股不受影响保持原有逻辑
- 不违背"技术位优先，不机械乘系数"原则

strategy_lifecycle.py

@@ -18,6 +18,38 @@ from datetime import datetime
 import technical_analysis as ta
 import multi_timeframe as mtf
 
+
+def is_hk_stock(code):
+    """判断是否港股（港股代码5位，A股6位带前导零）"""
+    return len(str(code)) <= 5
+
+
+def calc_atr(code, period=14):
+    """从腾讯API K线数据计算ATR(period)，返回ATR值或None"""
+    try:
+        url = f"http://ifzq.gtimg.cn/appstock/app/fqkline/get?param=hk{code},day,,,60,qfq"
+        req = urllib.request.Request(url, headers={'User-Agent': 'Mozilla/5.0'})
+        resp = urllib.request.urlopen(req, timeout=5).read().decode('utf-8')
+        data = json.loads(resp)
+        bars = data.get('data', {}).get(f'hk{code}', {}).get('day', [])
+        if len(bars) < period + 1:
+            return None
+        trs = []
+        for i in range(1, min(len(bars), period + 1)):
+            try:
+                high = float(bars[i][2])
+                low = float(bars[i][3])
+                prev_close = float(bars[i-1][4]) if len(bars[i-1]) > 4 else float(bars[i-1][3])
+                tr = max(high - low, abs(high - prev_close), abs(low - prev_close))
+                trs.append(tr)
+            except (ValueError, IndexError):
+                continue
+        if not trs:
+            return None
+        return round(sum(trs) / len(trs), 2)
+    except Exception:
+        return None
+
 # 提示词版本追踪
 try:
     from prompt_manager.tracking import record_strategy_generation
@@ -581,6 +613,16 @@ def reassess_strategy(code, name, price, cost, shares, current_action,
         new_stop = min_stop
         if old_stop != new_stop:
             print(f"  最小止损 {round(min_stop_gap*100)}%间距约束: {old_stop}→{new_stop} (趋势{'强' if is_strong_trend else '普通'})")
+    
+    # 港股附加：ATR波动率校验 — 止损距现价不得小于 1×ATR(14)
+    if is_hk_stock(code):
+        atr = calc_atr(code)
+        if atr and atr > 0:
+            min_atr_stop = round(price - atr, 2)
+            if new_stop > min_atr_stop:
+                old_stop_val = new_stop
+                new_stop = min_atr_stop
+                print(f"  港股ATR波动率校验({atr:.2f}): 止损 {old_stop_val}→{new_stop} (1×ATR间距)")
 
     # ----- 止盈设置 -----
     if is_short_term_strong_trend and not is_new_entry: