Strategy Grid Optimizer (Trend & Risk)

Description:
This tool transforms your chart into a powerful backtesting engine that runs hundreds of simulations per second. It is designed to solve the "Parameter Stability" problem: finding the settings that work robustly, rather than curve-fitting to a single number.

How It Works:
Instead of testing one setting at a time, this script uses Pine Script Arrays to run a "Grid Search" on your chart history:

1. Trend Filter: It iterates through a range of EMA Lengths (e.g., 20, 30, 40... to 200).
   
2. Risk Management: It iterates through a range of ATR Multipliers (e.g., 1.0, 1.5, 2.0...) for the trailing stop.
   
3. The Result: It ranks every combination based on Net Profit, Drawdown, and Win Rate, instantly highlighting the "Sweet Spot" for the current asset.
   

Strategy Logic (Fully Customizable):
By default, this script demonstrates a standard EMA 9/21 Crossover.
Developers & Traders: This script is designed as a Template. You can easily open the Source Code and replace the entry_signal logic with any strategy you wish (e.g., RSI, MACD, Bollinger Bands, or your own proprietary logic). The optimizer engine will work with whatever signal you provide.

Workflow:

1. Use the MTF Scanner to find the best Timeframe.
   
2. Load this Grid Optimizer on that timeframe.
   
3. Adjust the "Start" and "End" ranges in settings.
   
4. The table will reveal the optimal Trend/Risk combination for your strategy.