feat(lotto): evaluate_weekly 학습 신호를 forward lift로 승격

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

lotto/tests/test_weight_evolver.py

@@ -135,3 +135,10 @@ def test_select_winner_by_lift_gating():
     winner2 = we.select_winner_by_lift(per_w, random_score=3.0, epsilon=2.0)
     assert winner2["gated"] is False
     assert winner2["trial_id"] == 2      # prize 9 → lift +6
+
+
+def test_prize_score_from_hist():
+    # 등수 가중치: 1등 매우 큼, 하위는 작게
+    s = we.prize_score_from_hist({"m3": 10, "m4": 2, "m5": 0, "m6": 0, "bonus_hits": 0})
+    s_big = we.prize_score_from_hist({"m3": 0, "m4": 0, "m5": 0, "m6": 1, "bonus_hits": 0})
+    assert s_big > s   # 1등 1장이 5등 다수보다 큼