feat(lotto): backtest API 라우터 + main 등록

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

lotto/app/main.py

@@ -47,6 +47,7 @@ from .weight_evolver import (
 from .routers import curator as curator_router
 from .routers import briefing as briefing_router
 from .routers import review as review_router
+from .routers import backtest as backtest_router
 from .jobs.grade_weekly_review import run_for_latest as grade_run_for_latest
 
 app = FastAPI()
@@ -54,6 +55,7 @@ install_access_log(app)
 app.include_router(curator_router.router)
 app.include_router(briefing_router.router)
 app.include_router(review_router.router)
+app.include_router(backtest_router.router)
 scheduler = BackgroundScheduler(timezone=os.getenv("TZ", "Asia/Seoul"))
 
 ALL_URL = os.getenv("LOTTO_ALL_URL", "https://smok95.github.io/lotto/results/all.json")