- Add 'Strategy' tab to sidebar for backtesting simulations - Create strategy-panel.js for Ping-Pong and Accumulation mode simulations - Refactor all indicators (MA, HTS, RSI, MACD, BB, STOCH, Hurst) to use strict crossover-based signal calculation - Update chart.js with setSimulationMarkers and clearSimulationMarkers support - Implement single-entry rule in Ping-Pong simulation mode