deploy.sh にマイグレーション自動実行を追加

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

deploy.sh

@@ -14,9 +14,12 @@ docker compose down
 echo "[3/4] docker compose build..."
 docker compose build
 
-echo "[4/4] docker compose up -d..."
+echo "[4/5] docker compose up -d..."
 docker compose up -d
 
+echo "[5/5] migrate..."
+docker compose exec backend python manage.py migrate
+
 echo ""
 echo "=== デプロイ完了 ==="
 docker compose ps