The FIRST microstructure / trade-tick strategy in the 1,174-experiment portfolio (short-horizon bucket 2.4% vs >=10% quota; order-flow class entirely absent). A LONG-SHORT, SINGLE-INSTRUMENT intraday strategy on BTCUSDT.BINANCE USD-M perpetual that trades SHORT-HORIZON CONTINUATION driven by ORDER-FLOW IMBALANCE (OFI) -- the net of aggressive taker-buy vs taker-sell volume -- computed from TRADE TICKS (aggTrades), a crypto-native edge invisible in OHLCV bars. Thesis: bursts of sustained one-sided AGGRESSIVE flow (informed/forced order flow lifting the offer or hitting the bid) precede short continuation in the same direction before the book refills; entering with that flow and exiting on a fee-clearing move captures the continuation. EVERY design choice respects this session's binding lessons: (1) TRADE_TICKS as the data source -- aggTrades have FULL Binance Vision history (NOT the thin-history supplementary 'taker_ratio'/OI/liquidation streams that died 0-for-7 with final-window trade-clustering); the data-coverage wall does not apply to core tick data. (2) CONTINUATION direction, not fade -- crypto intraday CONTINUES (every intraday-fade/VWAP-reversion died: SOL -80%, BTC -90.5%); OFI-continuation aligns with the validated direction. (3) FEE-AWARE BY CONSTRUCTION -- enters only on STRONG sustained aggression and targets a ~0.4% move (~0.3% net after ~0.10% RT taker), well above the 0.15% futures floor, holding MINUTES; this is explicitly NOT scalping (sub-0.15% tick-chasing is the banned anti-pattern) and NOT 100+ tiny-PnL trades/day. (4) BTC -- deepest book, tightest microstructure -> best OFI signal-to-noise and lowest slippage. (5) LONG-SHORT (under-target 13% direction), FUTURES (clean discrete sizing, can short; the right venue, NOT engine-blocked like options/COIN-M and NOT data-starved like HL). (6) CAPITAL-CAPPED sizing against STABLE realized equity, hard-capped <=100% -- the explicit fix for the recurring >100%-notional inflation bug. Intentionally minimal: 3 tunables (ofi_window, ofi_threshold, take_profit_pct). HONEST: this is high-novelty/high-quota-value but survival-uncertain (fee drag and tick-data sandbox availability are the two failure modes), priced at priority 3.