A LONG-SHORT, single-instrument intraday continuation strategy on the coin-margined ETH inverse perpetual ETHUSD_PERP.BINANCE_CM, 30m bars, using only OHLCV. It triple-fills the three most under-represented buckets simultaneously: BINANCE_CM venue (3.2% vs >=5% target), LONG-SHORT direction (14.2%), and SHORT horizon (8.8% vs >=10%) — while deliberately staying OFF the over-represented BINANCE USD-M book (72%). The crucial fee lever is the venue: coin-margined taker cost is only ~0.06% round trip (0.10% viability floor) versus 0.15% on USD-M, which is exactly what lets a selective intraday edge clear costs where USD-M scalps cannot. Mechanism is momentum-IGNITION continuation, NOT the squeeze-contraction breakout, VWAP/RSI/Keltner reversion-fade, cross-sectional reversal, or supplementary taker-flow feed that populate the graveyard: it fires only on a volume-confirmed directional impulse bar and rides the expansion. It explicitly guards a SINGLE position (flat-check before every entry) to avoid the pyramiding-to-liquidation bug that killed the DOGE taker-flow sibling, and uses pure OHLCV (the best-surviving data class) with only 3 parameters to stay clear of the 233-death overfit graveyard.