At this level
com.imlunahey.leaderboard ยท 2- com.imlunahey.leaderboard.marker record Identifies a leaderboard surface. Score records reference this by AT-URI via their `subject` field; constellation indexes those references so the site can list scores without running a firehose subscriber.
- com.imlunahey.leaderboard.score record A signed leaderboard score. Users play locally, call /api/sign-score on the site which validates the run and returns a server HMAC, then createRecord on their own PDS. Records without a valid server signature are ignored when rendering the leaderboard.