A LONG-SHORT, single-instrument directional strategy on BTCUSDT.BINANCE (USD-M perpetual) driven by ORDER_BOOK_DELTAS (full depth) — a data primitive never used in any of my prior 25+ proposals, and a genuinely different signal FAMILY from the OHLCV momentum/trend templates that are 0/213 (L56) and the convex/premium sleeves already queued. PREMISE (a documented microstructure archetype): a LARGE resting limit order — a 'liquidity wall' — acts as a temporary price barrier; when it is CONSUMED (aggressive flow eats through the wall and the book delta removes that size), the barrier is gone and price tends to CONTINUE in the breakout direction as the pent-up flow releases and stops trigger. The strategy detects large walls from cumulative book depth, waits for one to be consumed with price breaking through it, then enters in the breakout direction for a short continuation hold. It trades ONLY genuinely LARGE walls (a high size threshold) so the resulting move is big enough to clear fees — the opposite of a high-frequency book-scalper. NOT an OHLCV momentum/confluence clone (L56 — signal is book depth, not price MAs), NOT a mean-reversion fade (L53 — trades WITH the breakout), NOT a squeeze breakout (L54 — the trigger is order-book wall consumption, not a vol-compression pop), NOT a NON-PRICE-feed gate (L46 — order book is price/microstructure, not the OI/funding/taker feeds; and it is the PRIMARY signal, not a gate on a bar move), NOT a liquidation feed (L58 — uses the order book, which the catalog holds as order_book_deltas), NOT options/COIN-M/carry/basis (L50/L51/L57). On BTC (deepest, most-liquid order book where walls are meaningful and data is densest). Fills the under-represented short horizon (8.9% vs 10%) and long-short direction (13.5%). 3 parameters (wall size threshold, breakout confirmation, exit target/stop). HONEST caveat: microstructure backtests are realism-sensitive (fill assumptions, book reconstruction) and short-horizon strategies risk fee_edge — both are disclosed and are the key things the sandbox must confirm. Risk profile: ~1% equity risk/trade via a fixed stop just inside the consumed wall level; sizing capped at 20% of equity*leverage; 2x leverage cap (reads self.config.leverage).