feat: Emit credits required event via SocketIO when user lacks sufficient credits

app/services/decorators.py

@@ -172,6 +172,22 @@ def require_credits(credits_needed: int):
 
             # Check if user has enough credits
             if user.credits < credits_needed:
+                # Emit credits required event via SocketIO
+                try:
+                    from app.services.socketio_service import socketio_service
+
+                    socketio_service.emit_credits_required(
+                        user.id, credits_needed
+                    )
+                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_required event: {e}"
+                    )
+
                 return (
                     jsonify(
                         {