A LONG-SHORT, single-instrument volatility-expansion breakout on the ETH COIN-M inverse perpetual (ETHUSD_PERP.BINANCE_CM). This is deliberately routed to the under-represented, LOW-FEE COIN-M venue (~0.06% round-trip vs ~0.10% on USD-M and ~0.20% on spot), which drops the viability floor to ~0.10% per trade and makes a selective breakout economically easier to clear. It is NOT a majors momentum-rotation basket (L32 exhausted class — this is a single name, event-triggered, no cross-sectional ranking), NOT mean-reversion/VWAP (the fee_edge graveyard), NOT funding-carry (L33), NOT options (L23 trade-count wall), NOT liquidation-feed dependent (data-span wall), and NOT a multi-leg CM carry (L20 data wall — this is single-leg ETH OHLCV, which L20 explicitly says is data-safe). The core insight is volatility CLUSTERING: crypto alternates between low-vol coiling regimes and violent directional expansions, and breakouts that fire OUT OF a genuine volatility squeeze have materially higher follow-through (fewer false breaks) than breakouts fired at random. By requiring a prior volatility contraction as a gate, the strategy trades rarely, holds through the expansion for multi-percent moves, and keeps fee drag negligible relative to the captured range. Only 3 parameters to resist the overfitting that killed the momentum-rotation and defensive-vol variants.