A long-only, single-instrument, single-timeframe strategy on ADAUSDT.BINANCE 4H bars. Implements a NEW MECHANISM CLASS that addresses the analyst's critical regime-decay warning from the Two-Bar HH Breakout abandon: 'Mechanism worked during the elevated crypto-volatility regime but does not generalize to the current lower-vol / failed-breakout regime.' Breakout-based strategies are now at-risk; the 2025+ regime favors MEAN-REVERSION within established uptrends — buy-the-dip rather than buy-the-breakout. The mechanism: detect when price has had a strong recent UP move (3+ consecutive bars where close > prior close, totaling >= 1.0×ATR cumulative upmove), then a PULLBACK occurs (price retraces back to within 0.3×ATR of the midpoint of the recent N-bar range), and the current bar closes BULLISHLY confirming the pullback ended. In a confirmed uptrend (close > sma_100), this captures the classic 'buy the dip' opportunity that thrives in lower-vol regimes where breakouts fail but pullbacks get bought. Critically distinct from every existing ADA 4H mechanism: (a) NOT breakout-based (entries are at pullback MIDPOINT, not at channel extremes) — directly addresses regime-decay vulnerability of all breakout strategies; (b) NOT statistical (uses structural price-level retracement, not z-scores or autocorrelation); (c) NOT single-bar absorption (uses multi-bar UP-MOVE + pullback sequence). STRUCTURAL + SEQUENCE-BASED + MEAN-REVERSION-WITHIN-TREND per analyst guidance.