ETH Spot-Perp Funding Carry Hedged Market-Neutral (BINANCE_SPOT + BINANCE Futures, 4H, Funding-Driven)

Hypothesis

Delta-neutral funding carry on ETH: hold ETH spot long on BINANCE_SPOT while shorting ETHUSDT perp on BINANCE USD-M futures whenever the trailing funding rate is sufficiently positive. Collect the funding payments paid by perp longs to perp shorts every 8 hours. Unwind both legs when funding regime flips negative or compresses below an exit threshold. Fills cross-venue quota (currently 3.0% vs ≥15% target), long_short quota (9.6% vs ≤55% allowance for long_only), and BINANCE_SPOT quota (11.0% vs ≥15% target). Uses funding_rate stream that the portfolio currently underweights. Avoids the 30-MINUTE bar data-refill failures and the low-trade-count walk-forward pathology — funding regimes shift roughly weekly, producing ~50-100 full entry/exit cycles per year, comfortably above the 100-trade walk-forward floor over a 6-year backtest.