Cursor can't find a file because it has @ before - you can't tag it otherwise

As the title says, please see the screenshot attached.

I have tried all possible ways to give him the file but there was no way, had to do it 3 times until he found it himself.

Hey, what if you start a new session? Will that solve the problem?

Also confirm your codebase indexing is working, we had some issues with it but they should all be ironed out now!