Unlock TradingView Invite-Only Indicator- No reverse engineering only extract code if any one can do

I currently use an invite-only TradingView indicator that plots nothing more than its buy and sell signals, yet I need the complete Pine Script source so I can study, adapt, and extend the logic myself. Your task is to deliver a fully readable, well-commented script that reproduces the indicator’s behaviour one-for-one on the chart.

The original script fires simple long/short markers—no custom alerts, dashboards, or extra overlays—so please focus on reverse-engineering whatever calculations drive those entries and exits, then rewriting them in Pine Script v5 so the code compiles without warnings.

To validate your work I will check that:
• The reconstructed script aligns candle-for-candle with the invite-only version’s buy/sell arrows on multiple assets and timeframes.
• Key variables and functions are commented clearly so I can tweak thresholds or add alerts later.
• All external libraries or special TradingView functions, if any, are included or replicated.

Deliverables: the .pine file plus a brief note summarising usage and any limitations you found while reproducing the logic.