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>

ChanCTime.py

@@ -1,44 +1,5 @@
-from datetime import datetime
-
-
-class ChanCTime:
-    def __init__(self, year, month, day, hour, minute, second=0, auto=True):
-        self.year = year
-        self.month = month
-        self.day = day
-        self.hour = hour
-        self.minute = minute
-        self.second = second
-        self.auto = auto  # 自适应对天的理解
-        self.set_timestamp()  # set self.ts
-
-    def __str__(self):
-        if self.hour == 0 and self.minute == 0:
-            return f"{self.year:04}/{self.month:02}/{self.day:02}"
-        else:
-            return f"{self.year:04}/{self.month:02}/{self.day:02} {self.hour:02}:{self.minute:02}"
-
-    def to_str(self):
-        if self.hour == 0 and self.minute == 0:
-            return f"{self.year:04}/{self.month:02}/{self.day:02}"
-        else:
-            return f"{self.year:04}/{self.month:02}/{self.day:02} {self.hour:02}:{self.minute:02}"
-
-    def toDateStr(self, splt=''):
-        return f"{self.year:04}{splt}{self.month:02}{splt}{self.day:02}"
-
-    def toDate(self):
-        return ChanCTime(self.year, self.month, self.day, 0, 0, auto=False)
-
-    def set_timestamp(self):
-        if self.hour == 0 and self.minute == 0 and self.auto:
-            date = datetime(self.year, self.month, self.day, 23, 59, self.second)
-        else:
-            date = datetime(self.year, self.month, self.day, self.hour, self.minute, self.second)
-        self.ts = date.timestamp()
-
-    def __gt__(self, t2):
-        return self.ts > t2.ts
-
-    def __ge__(self, t2):
-        return self.ts >= t2.ts
+"""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.core.ChanCTime")
+sys.modules[__name__] = _impl