Do we have to manually update a context file, or can we not have cursor make a summary dump?

As the title says, is there a way to get cursor to make a summary or auto update a context file? Ive heard some people saying they have rules set for this, but it seems like it should be a built in option, checkbox to keep a context file of some kind.

what do you mean by context file?

you can get composer summaries by doing @Composer summaries

would that help?