Previously it was possible to have globs and description at the same time, however that is not the case any more unfortunately.
I can still force it by editing the file with the text editor but is this even supported now?
It makes sense to have rules that must always be applied when working on certain files, but the agent can also request them when the user asks questions or is working on other files that contains some code that might be related eg:
An input field that open the a copilot chat have some code that triggers the copilot chat and it needs to know how it works. The files is not necessarily under src/components/copilot but this is a copilot related task so it needs to fetch that rule.