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>

ChanMACDSeg.py

@@ -1,49 +1,5 @@
-from ChanEnum import Chan_MACDSEG_DIR
-
-
-class ChanMACDSeg():
-    def __init__(self, index, start_time, start_klu, pre_seg, seg_dir, start_unittf):
-        self.index = index
-        self.start_time = start_time
-        self.end_time = None
-        self.start_klu = start_klu
-        self.end_klu = None
-        self.klu_list = []
-        self.klu_list.append(start_klu)
-        self.unittf_list = []
-        self.seg_dir = seg_dir
-        self.pre = pre_seg
-        self.next = None
-        self.high_klu = start_klu
-        self.low_klu = start_klu
-        self.ref_klu = None
-        self.unittf_list.append(start_unittf)
-    def set_next(self, next_seg):
-        self.next = next_seg
-    def set_pre(self, pre_seg):
-        self.pre = pre_seg
-    def add_klu(self, klu):
-        if klu:
-            self.klu_list.append(klu)
-            klu.set_seg(self)
-            if self.seg_dir == Chan_MACDSEG_DIR.ABOVE:
-                if klu.macdhist > self.high_klu.macdhist:
-                    self.high_klu = klu
-                else:
-                    if klu.macdhist < self.low_klu.macdhist:
-                        self.low_klu = klu
-            else:
-                if klu.macdhist < self.high_klu.macdhist:
-                    self.high_klu = klu
-                else:
-                    if klu.macdhist > self.low_klu.macdhist:
-                        self.low_klu = klu
-            if self.high_klu.index != self.start_klu.index:
-                self.ref_klu = self.high_klu
-    def add_unittf(self, unittf):
-        self.unittf_list.append(unittf)
-        unittf.set_next(self)
-    def set_end_klu(self, end_klu):
-        self.add_klu(end_klu)
-        self.end_klu = end_klu
-        self.end_time = end_klu.time
+"""兼容 shim：请优先 from chan... 导入。本文件仅保持旧路径可用。"""
+import importlib
+import sys
+_impl = importlib.import_module("chan.analysis.ChanMACDSeg")
+sys.modules[__name__] = _impl