Provide a top level function for fetching non-PR issues #790
Description
Describe the feature or problem you’d like to solve
Currently, when I ask to list most recent issues, it uses "List issues".
Since my repo has many recent PRs, it only fetches PRs (whole first page) and never finds any actual issues.
It doesn't seem to know how to fetch non-PR issues, so it seems I'd have to get it to paginate through list issues several times.
I think it'd benefit folks to separate Issues from PRs, as many of us would like to fetch issues separately.. and also in the UI, only issues are called "Issues".
Proposed solution
Either break "List issues" into "List issues" and "List pull requests" or add an argument for type issue/pr.
Example prompts or workflows (for tools/toolsets only)
"List most recent issue in [repo]"
"Summarize 5 recent issues in [repo]"
Additional context
