refactor: 缠论引擎迁入 chan/ 分层解耦，指标外置

将核心结构、指标与分析拆到 chan/{core,indicators,analysis,pipeline}；
根目录保留兼容 shim；strategies 改为从 chan 包导入；买卖点经 bsp_macd 与 MACD 接合。

Co-authored-by: Cursor <cursoragent@cursor.com>

chan/core/ChanBSP.py

@@ -0,0 +1,24 @@
+from . import ChanBI
+from .ChanEnum import Chan_BSP_TYPE, Chan_BSP_DIR
+
+class ChanBSP():
+    def __init__(self, bi: ChanBI, index, type: Chan_BSP_TYPE, ddir: Chan_BSP_DIR, sure_time, zs_count, zs, seg):
+        self.bi = bi
+        self.klc = bi.end_klc
+        self.index = index
+        self.type = type
+        self.start_time = self.klc.start_time
+        self.end_time = self.klc.end_time
+        if sure_time:
+            self.is_sure = True
+            self.sure_time = sure_time
+        else:
+            self.is_sure = False
+            self.sure_time = None
+        self.dir = ddir
+        self.zs_count = zs_count
+        self.zs = zs
+        self.seg = bi.seg
+    def set_sure_time(self, sure_time):
+        self.is_sure = True
+        self.sure_time = sure_time