fix: 跟踪confirmed[-1]，新笔确认时查上一轮confirmed[-1]的BSP

以前跟踪bi_list[-1]（含未确认）导致时序不对。
现在跟踪confirmed[-1]的稳定ID，变化时在bi_list中精确定位
上一轮的那笔，查其end_klc是否为BSP。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

bsp_monitor/main.py

@@ -107,8 +107,8 @@ class BSPMonitor:
         if len(confirmed) < 2:
             return
 
-        last_bi = confirmed[-1]
-        current_bi_id = _bi_id(last_bi)
+        last_confirmed = confirmed[-1]
+        current_bi_id = _bi_id(last_confirmed)
         if current_bi_id is None:
             return
 
@@ -116,26 +116,25 @@ class BSPMonitor:
         if st.first_run:
             st.first_run = False
             st.last_bi_id = current_bi_id
-            st.pivot_monitor.update(engine.bi_zs_list)  # 初始化中枢状态
+            st.pivot_monitor.update(engine.bi_zs_list)
             logger.info(
                 f"[{name}] 首次完成 — {len(confirmed)} 笔, "
                 f"{len(engine.bsp_list)} BSP (不推送)"
             )
             return
 
-        # 6. 检测新笔
+        # 6. 检测新笔确认
         if current_bi_id == st.last_bi_id:
-            return  # 无新笔，跳过
+            return
 
-        # 保存旧笔 ID，用它在当前笔列表中定位刚结束的那笔
         prev_bi_id = st.last_bi_id
         st.last_bi_id = current_bi_id
 
-        bi_dir = "⬆️" if last_bi.dir == Chan_BI_DIR.UP else "⬇️"
+        bi_dir = "⬆️" if last_confirmed.dir == Chan_BI_DIR.UP else "⬇️"
         logger.info(f"[{name}] 新笔确认 — #{len(confirmed)} "
-                    f"{bi_dir} 高度: ${last_bi.height:.2f}")
+                    f"{bi_dir} 高度: ${last_confirmed.height:.2f}")
 
-        # 7. 用旧笔 ID 精确定位刚结束的笔，检查其终点是否为 BSP
+        # 7. 找到刚被终结的那笔（上一轮的 confirmed[-1]），检查其终点是否为 BSP
         prev_bi = None
         for b in engine.bi_list:
             if b.is_sure and _bi_id(b) == prev_bi_id:
@@ -148,11 +147,11 @@ class BSPMonitor:
             bsp = None
 
         if bsp:
-            key = f"{symbol}_{bsp.type}_{bsp.klc.end_time}"
-            msg = engine.format_bsp_detail(bsp, symbol)
-            msg = _escape_html(msg)
-            if send_bsp_alert(msg, bsp_key=key):
-                logger.info(f"[{name}] ✅ BSP: {key}")
+                key = f"{symbol}_{bsp.type}_{bsp.klc.end_time}"
+                msg = engine.format_bsp_detail(bsp, symbol)
+                msg = _escape_html(msg)
+                if send_bsp_alert(msg, bsp_key=key):
+                    logger.info(f"[{name}] ✅ BSP: {key}")
 
         # 8. 中枢特征更新
         pivot_state = st.pivot_monitor.update(engine.bi_zs_list)