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>

tests/test_golden_pipeline.py

@@ -0,0 +1,46 @@
+"""Golden 回归：缠论流水线序列化结果应与基线一致。"""
+from __future__ import annotations
+
+import json
+import subprocess
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def test_golden_pipeline():
+    r = subprocess.run(
+        [sys.executable, str(ROOT / "tests" / "generate_golden.py"), "--check"],
+        cwd=str(ROOT),
+        capture_output=True,
+        text=True,
+    )
+    assert r.returncode == 0, r.stdout + r.stderr
+
+
+def test_package_imports():
+    from chanlun import ChanLun, TF_DF
+    from chanlun.core.ChanEnum import Chan_BI_DIR
+
+    assert ChanLun is not None and TF_DF is not None and Chan_BI_DIR is not None
+
+
+def test_compat_shim_still_works():
+    """根目录 shim 保留给外部旧脚本。"""
+    from ChanLun import ChanLun as C1
+    from TF_DF import TF_DF as T1
+    from ChanEnum import Chan_BI_DIR
+    from chanlun import ChanLun as C2, TF_DF as T2
+
+    assert C1 is C2 and T1 is T2 and Chan_BI_DIR is not None
+
+
+def test_analyze_contract_keys_file():
+    keys = json.loads(
+        (ROOT / "tests" / "fixtures" / "analyze_contract_keys.json").read_text(
+            encoding="utf-8"
+        )
+    )
+    for k in ("kline_data", "bi_list", "seg_list", "zs_list", "bsp_list"):
+        assert k in keys