K-Mean Reversion

Change htfRsiCutoff from 40 to 50 in the longCondition. The current cutoff of 40 is extremely restrictive, requiring the higher timeframe RSI to be in deep bearish territory. Raising to 50 allows entries in neutral-to-slightly-oversold HTF conditions, expanding trade frequency while the LTF RSI crossover still provides the precise timing. This addresses the severe undertrading (1 trade in 8 years).