refactor: 缠论引擎包化与 Web 分层（ECR-001）

将根目录引擎迁入 chanlun/ 并保留兼容 shim；拆分 TF_DF 与 web 服务；
前端模块化；strategies 改用 chanlun 导入；补充 ESS 文档与 golden 回归。

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

ChanBSP.py

@@ -1,24 +1,2 @@
-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
+"""兼容 shim — 请优先 from chanlun import ..."""
+from chanlun.core.ChanBSP import *  # noqa: F403