feat(auto-trading): integrate MetaApi for automated trading

- Add metaapi.cloud-sdk for broker integration
- Implement AutoTradingView component
- Extend Signal interface with secondary take-profit levels
- Update UI to include auto-trading navigation tab

firestore.rules

@@ -124,6 +124,11 @@ service cloud.firestore {
     match /settings/{settingId} {
       allow read: if true;
       allow update, create, delete: if isDbAdmin();
+      
+      }
+      // --- Telegram Active Signals (Usado pelo background worker) ---
+    match /telegram_active_signals/{document=**} {
+      allow read, write: if true; 
     }
   }
 }