feat(oi): improve csv loading with caching

Add price caching to prevent repeated file reads and improve performance.
Implement multi-path search for CSV files with fallback options. Add
comprehensive logging for CSV load success/failure states. Update dashboard
to display CSV loading status. Simplify scraper CSV output format and automate
file transfer to terminal MQL5 Files directory.

oi_scraper/run_with_venv.bat

@@ -16,6 +16,9 @@ call venv\Scripts\activate.bat
 REM Run Python scraper
 python main.py
 
+MOVE "oi_data.csv" "C:\Users\limitrack\AppData\Roaming\MetaQuotes\Terminal\53785E099C927DB68A545C249CDBCE06\MQL5\Files\"
+
+
 echo.
 echo Scraper completed. Check oi_data.csv for results.
 timeout /t 5