- Add signals-calculator.js module for calculating buy/sell/hold signals for all indicators
- Integrate signals into Trend Analysis panel (renamed to Indicator Analysis)
- Display individual indicator signals with badges, values, strength bars, and detailed reasoning
- Add aggregate summary signal showing overall recommendation from all indicators
- Support signals for RSI, MACD, Stochastic, Bollinger Bands, SMA/EMA, ATR, and HTS
- Provide tooltips on hover showing indicator value, configuration, and reasoning
- Ensure indicators calculate on all available candles, not just recent ones
- Cache indicator calculations for performance while recalculating on historical data loads
- Style improvements: monospace font, consistent button widths, reduced margins
- Add AGENTS.md documentation file with project guidelines
