refactor: Optimized for incremental calculation

Indicators/MyIndicators/Supertrend_Pro.md

@@ -1,4 +1,4 @@
-# Supertrend Professional
+# Supertrend Pro
 
 ## 1. Summary (Introduction)
 
@@ -34,12 +34,16 @@ Our MQL5 implementation follows a modern, component-based, object-oriented desig
 
 * **Component-Based Design:** The `Supertrend_Calculator` **reuses** our existing, standalone `ATR_Calculator.mqh` module, ensuring the ATR component is always our robust, definition-true Wilder's ATR.
 
+* **Optimized Incremental Calculation:**
+    Unlike basic implementations that recalculate the entire history on every tick, this indicator employs an intelligent incremental algorithm.
+  * It utilizes the `prev_calculated` state to determine the exact starting point for updates.
+  * **Persistent State:** The internal buffers for the recursive "stair-step" logic (`m_upper`, `m_lower`, `m_trend`) persist their state between ticks. This allows the calculation to continue seamlessly from the last known value without re-processing the entire history.
+  * This results in **O(1) complexity** per tick, ensuring instant updates and zero lag, even on charts with extensive history.
+
 * **Object-Oriented Logic:** An elegant inheritance model (`CSupertrendCalculator` and `CSupertrendCalculator_HA`) allows the indicator to seamlessly switch between standard and Heikin Ashi price data for its core logic.
 
 * **Clean Gapped-Line Drawing:** To provide a clear visual separation at trend changes, the indicator uses a **"double buffer" technique**. It plots uptrend and downtrend segments on two separate, overlapping plot buffers. This creates a distinct visual gap when the trend flips, accurately representing the signal without drawing misleading connecting lines.
 
-* **Stability via Full Recalculation:** We employ a "brute-force" full recalculation within `OnCalculate` for maximum stability.
-
 ## 4. Parameters
 
 * **ATR Period (`InpAtrPeriod`):** The lookback period for the ATR calculation. Default is `10`.