Hammer Candle Detector with ATR Wick Condition

This script detects Hammer candlesticks on any timeframe chart.
Conditions for a valid Hammer:
1. Small body near the top of the candle range (≤30% of total range)
2. Lower shadow at least 2× the body
3. Small or no upper shadow (≤30% of body)
4. Lower wick height must be greater than half of ATR(14)
A triangle marker is plotted below each candle that meets these conditions.