[V10.346] 補強 PChome identity anchor scorer

tests/test_marketplace_product_matcher.py

@@ -426,6 +426,28 @@ def test_marketplace_matcher_does_not_promote_different_option_without_spec():
     assert "strong_exact_spec_match" not in diagnostics.reasons
 
 
+def test_marketplace_matcher_promotes_shared_identity_anchor_near_threshold():
+    from services.marketplace_product_matcher import score_marketplace_match
+
+    obge = score_marketplace_match(
+        "【OBgE】自然遮瑕素顏霜 50g",
+        "OBgE/自然遮瑕素顏霜50g",
+        momo_price=699,
+        competitor_price=699,
+    )
+    unicat = score_marketplace_match(
+        "【UNICAT 變臉貓】超持久細滑眼線筆1.5ml",
+        "【UNICAT】超持久細滑眼線筆 1.5ml 新品搶先優惠",
+        momo_price=399,
+        competitor_price=399,
+    )
+
+    for diagnostics in (obge, unicat):
+        assert diagnostics.score >= 0.76
+        assert diagnostics.hard_veto is False
+        assert "shared_identity_anchor" in diagnostics.reasons
+
+
 def test_marketplace_search_terms_prefer_readable_brand_core_spec():
     from services.marketplace_product_matcher import build_search_terms