Vector CPR Bands

## Overview
The Vector CPR Bands indicator enhances the classic Central Pivot Range (CPR) by incorporating "vector" detection—identifying periods with above-average or climactic volume. It projects CPR ranges from these high-volume periods forward as visual bands, which act as persistent support/resistance zones until invalidated by price action. Ideal for spotting key levels in trending or ranging markets, especially on higher timeframes like weekly or monthly.

## Key Features
- **CPR Calculation**: Plots previous, developing (non-repainting), and repainting CPR with mid-pivot, TC (top central), and BC (bottom central) lines, plus fills.
- **Vector Detection**: Scans for high-volume bars in the anchor timeframe (default weekly). Flags "above-average" (≥1.5x avg) or "large" (≥2x avg or max climax).
- **Band Projection**: Creates bands from vector-qualified CPR periods. Extends them rightward until touched/revisited (configurable: invalidate on wick/close, delete or freeze/gray out).
- **Customization**:
- Timeframe: Set CPR anchor (e.g., 'W' for weekly, 'M' for monthly).
- Display: Toggle CPR types, pivot guides.
- Volume Thresholds: Adjust lookback and ratios.
- De-clutter: Limit max bands, pin to period start, always extend.
- **Alerts & Signals**: Built-in alerts for developing pivot crossing previous pivot (bullish/bearish).

## How to Use
1. Add to chart and set anchor timeframe (e.g., 'M' for monthly vCPR on BTC, as shown in example charts).
2. Watch bands as S/R: Virgin (untested) bands often provide strong bounces; mitigated ones fade.
3. Combine with volume/price action: Bullish bands suggest upside bias, especially if price holds above.
4. Example: On BTC weekly, vector bands from high-volume weeks highlight multi-month zones—breaks signal shifts.