Backtest — historical-analog forward-return distribution for a ticker's recent shape. HOW TO CALL: GET /api/backtest?

Backtest — historical-analog forward-return distribution for a ticker's recent shape. HOW TO CALL: GET /api/backtest?ticker=BTC&lookback_days=20&forward_days=30 PARAMETERS: ticker — asset symbol (required) lookback_days — pattern window, 5–60 (default 20) forward_days — forward horizon, 7–90 (default 30) min_return / max_return — optional analog filters (fraction) RESPONSE: win rate, median, tails, sample size over the forward horizon. PRICING: $0.10 per call.