feat(stock-lab): High52WProximity 노드 — 신고가 대비 근접도 룰 점수

stock-lab/app/test_screener_nodes_high52w.py

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+import datetime as dt
+import pandas as pd
+
+from app.screener.engine import ScreenContext
+from app.screener.nodes.high52w import High52WProximity
+from app.screener._test_fixtures import make_master, make_prices, make_flow
+
+
+def _ctx(master, prices, flow):
+    return ScreenContext(master=master, prices=prices, flow=flow,
+                         kospi=pd.Series(dtype=float, name="kospi"),
+                         asof=dt.date(2026, 5, 12))
+
+
+def test_proximity_at_high_returns_100():
+    asof = dt.date(2026, 5, 12)
+    master = make_master(["A"])
+    prices = make_prices(["A"], days=260, asof=asof, trend_pct=0.05)
+    flow = make_flow(["A"], days=260, asof=asof)
+
+    out = High52WProximity().compute(_ctx(master, prices, flow), {"window_days": 252})
+    assert out["A"] >= 95
+
+
+def test_proximity_below_70pct_returns_0():
+    asof = dt.date(2026, 5, 12)
+    master = make_master(["A"])
+    prices = make_prices(["A"], days=260, asof=asof, start_close=100000, trend_pct=-0.5)
+    flow = make_flow(["A"], days=260, asof=asof)
+
+    out = High52WProximity().compute(_ctx(master, prices, flow), {"window_days": 252})
+    assert out["A"] == 0