AO3 BETA 3.9.0 (v9p)

// 📦 VERSION UPGRADE NOTE
// Indicator: [Your Indicator Name]
// Version: BETA 3.9.0 (v9p)
// Previous: BETA 3.4.2 (v6)
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// 🔸 Upgrade Summary:
// • Upgraded to Pine Script v6 (backward compatible).
// • Improved trend filter logic:
// – H1/H4 Uptrend = AO > U1
// – AO ≤ U1 ⇒ not uptrend
// – **NEW:** When AO crosses back above U1 (while AO > 0) ⇒ uptrend resumes.
// – Vice versa for downtrend.
// • Removed Entry Option 1; Option 2 → new Option 1; Option 3 → new Option 2.
// • Optimized internal constants & default values.
// • Added hidden system parameters (RISK_CAP, MIN_BARS, MAX_SPREAD, etc.).
// • Exposed only key inputs (Length, UseFilter, ATR Length) for cleaner UI.
// • Organized inputs into groups with tooltips for usability.
// • Improved performance via var-caching and reduced redundant calculations.
// • Simplified dev structure for modular updates.
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// 🧩 Notes:
// This build focuses on end-user stability and simplified interface.
// Developer-only parameters are now locked (not user-editable).