Missing module in the "Browse projects" tab - difference between available modules on Drupal.org

Problem/Motivation

I recently try the Project Browser module (version 2.0.0-beta1) on a fresh installation of Drupal CMS (version 11) (running with PHP 8.3). While testing the "Browse projects" feature, I noticed that one of my modules Opquast Checklist → does not appear in the list.

Steps to reproduce

1. Install a fresh Drupal CMS (version 11) site with PHP 8.3
2. Check that project_browser module (v2.0.0-beta1) is enabled
3. Go to the "Browse projects" tab
4. Clear all filters
5. Search for the "Opquast Checklist" module

Expected behavior

The opquast_checklist module should appear in the results, as it is compatible with Drupal 11 and listed on Drupal.org → .

Actual behavior

The module is missing from the list in the Project Browser UI. When all filters are cleared, I see 4,861 results available, whereas Drupal.org → lists 5,918 compatible modules for Drupal 11 under the same conditions.

Questions / Suggestions

• What could explain the discrepancy in the number of modules shown between Drupal.org and the Project Browser?
• Are there specific rules or metadata requirements that a module must follow to be included in the Project Browser list?
• Would it be helpful to document these prerequisites more clearly — e.g., in the README or the Project Browser handbook — so that maintainers can ensure their projects are discoverable?

Thanks