Add a feature to an existing NinjaTrader indicator
<filename> <feature>ninja/# Add Feature to NinjaTrader Indicator Add a feature to an existing NinjaTrader 8 NinjaScript indicator. Arguments: $ARGUMENTS ## Before Making Changes 1. Read the target file to understand current structure 2. Use doc-researcher to verify API for the new feature 3. Identify correct insertion points (regions, methods) 4. Discuss the approach with me before making changes 5. Wait for my approval before editing ## Supported Features ### Price Levels - VWAP with standard deviation bands - Initial Balance extensions - Pivot points - Opening Range levels ### Visual Elements - Drawing objec...