feat: implement auto-trading infrastructure

- Add auto-trading database collections and Firestore rules
- Update Gemini service prompt for SMC/Institutional focus
- Add MetaApi integration and Yahoo Finance symbol mapping
- Implement auto-trade state management in AutoTradingView

log_viewer.ts

@@ -0,0 +1,4 @@
+import fs from 'fs';
+const text = fs.readFileSync('error.log', 'utf8');
+const errIdx = text.lastIndexOf('Error');
+console.log(text.substring(Math.max(0, errIdx - 500), errIdx + 1500));