Halloween Strategy 🎃

Indie indicator that visualizes the Halloween Effect end-to-start: it shades Oct 31→May 1 as the in-season window, auto-places Buy on Oct 31 and Sell on May 1, and renders a compact performance panel versus buy-and-hold with key stats (total P&L, win rate, max drawdown, profit factor, sample size). Clean, designer-friendly visuals help validate seasonality, replay historical regimes, and support disciplined, evidence-based decisions with proper risk management.