LINK USD-M 4H Directional Momentum Gated by Taker Aggressor-Flow Alignment, Long-Short (Take the Trend ONLY When Net Aggressive Order Flow Confirms Its Direction, Flat on Disagreement, Vol-Scaled, ATR-Trailing, 3-Parameter)

A LONG-SHORT, single-instrument directional momentum trend follower on LINKUSDT.BINANCE (USD-M perpetual), 4H bars, that is a deliberate NEW member of the factory's ONE proven survivor family (Binance USD-M deep-liquidity directional momentum with a participation-confirmation gate: ETH volume-confirmed, ADA/BTC dual-TF confluence, SOL OI-quadrant all reached paper_stage). It differs from every failed pure-OHLCV TSMOM clone by requiring a SUPPLEMENTARY-DATA confirmation from a distinct source: the TAKER BUY/SELL aggressor-flow imbalance (taker_ratio), which measures directional AGGRESSION (who is lifting the offer vs hitting the bid), not total volume (EthVolumeConfirmed) and not open interest (SolOiQuadrant). The core insight: a raw trend sign is noise unless real aggressive capital is pushing in that direction; conditioning entry on flow alignment strips the whipsaw trades that make single-name TSMOM overfit. Chosen to fill the two most under-represented survivable buckets: long_short (14.7% vs target ~45%) and supplementary-data-driven (3% survival vs 1% for pure_ohlcv), on a liquid non-BTC/ETH/SOL major that is under-flogged in the recent corpus.