aggregate_1min_to_5min: 1분봉 5개 → 5분봉 1개 (open=첫, close=마지막, high=max, low=min, volume=sum). classify_minute_momentum: 직전 5개 5분봉 양봉 개수 + 거래량 60분 multiplier → 5-level (strong_up/weak_up/neutral/weak_down/strong_down). 40 tests pass. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>