Wick Reversal - Gavi

Detect clean single-bar reversal candles (hammer / shooting star variants) with objective rules.
This script flags bars where a dominant wick overwhelms the body and the close finishes near the relevant extreme of the candle—an evidence-based way to find potential turns or continuation traps.

What it detects

A bar is labeled a Wick Reversal when any of these structures occur:

Bullish candidates (WR↑):

• Long lower wick ≥ Wick_Multiplier × Body, and
  
• Close finishes in the top X% of the bar’s range.
  
• Doji and flat-top variants are also handled (size-filtered).
  

Bearish candidates (WR↓):

• Long upper wick ≥ Wick_Multiplier × Body, and
  
• Close finishes in the bottom X% of the bar’s range.
  
• Doji and flat-bottom variants are also handled (size-filtered).
  

Close-percent is measured from the high (bullish) or from the low (bearish), matching the commonly used definition.