Currently the API only returns "verify-date" on approved runs and there's no "rejection-date" equivalent for rejected runs. This date is already being tracked since it's visible on the run's page

Without this date it's impossible to calculate stuff like how many runs a verifier has verified over the last 30 days or the length of the verification queue at any point of the leaderboard's history. Seems like an easy to fix oversight that requires little effort and no breaking changes for the API response schema