- Replace line charts with candlestick charts for better visualization
- Green candles for up days, red for down days
- Daily resolution (30 days) - free tier compatible
- Auto-detect intraday vs daily data for proper time/date formatting
- Note: 5-min intraday requires paid Polygon tier ($199/month)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
