ENAMETOOLONG error

[ichts]

I have auto-save for chats enabled with the default filename template. However, every time I create a new chat, I get an ENAMETOOLONG error — as a result, the Copilot conversation isn't saved.

From discord thread: https://discord.com/channels/1182847556032659546/1428364611211759700

[logancyang]

Please add details and how to reproduce to this issue desc.