Custom page filter in admin panel

Hi!

Is there a simple possibility to add custom filter options to page list filter in admin panel, eg. filter by author or any custom entry of md file?

I would be very happy about an hint or a little help!

Thank you!

Start by locating the admin panel's page-list filtering entry point and reviewing how existing filters are defined. The issue names no files or tests; completion would require an agreed design for filtering by author or custom Markdown frontmatter fields, followed by verification that those filters work in the page list.

Written by the indexing model from the issue text.