feat(lotto): 새 회차 동기화 시 forward+calibration 자동 실행

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

lotto/app/main.py

@@ -84,6 +84,13 @@ def on_startup():
         if res["was_new"]:
             check_results_for_draw(res["drawNo"])
             _refresh_perf_cache()  # 새 채점 결과 반영 → 즉시 갱신
+            # 자가학습 백테스트 — 새 회차 forward 구매 + 당첨조합 캘리브레이션
+            try:
+                from . import backtest as _backtest
+                _backtest.run_forward_purchase(draw_no=res["drawNo"])
+                _backtest.calibrate_winner(res["drawNo"])
+            except Exception as e:
+                logger.warning(f"backtest 갱신 실패: {e}")
 
     scheduler.add_job(_sync_and_check, "cron", hour="9,21", minute=10)