feat(socketio): integrate SocketIO service for real-time communication and emit credits change events

app/services/decorators.py

@@ -185,6 +185,16 @@ def require_credits(credits_needed: int):
             user.credits -= credits_needed
             db.session.commit()
 
+            # Emit credits changed event via SocketIO
+            try:
+                from app.services.socketio_service import socketio_service
+                socketio_service.emit_credits_changed(user.id, user.credits)
+            except Exception as e:
+                # Don't fail the request if SocketIO emission fails
+                import logging
+                logger = logging.getLogger(__name__)
+                logger.warning(f"Failed to emit credits_changed event: {e}")
+
             # Execute the function
             result = f(*args, **kwargs)