Implements F1StandingsAdapter (Jolpica/Ergast API) and IndyCarStandingsAdapter
(ESPN IRL API), wires them into the syncStandings orchestrator with a
season_standings branch that upserts into participantSeasonResults instead of
regularSeasonStandings, and adds a "Championship Standings" card with a Sync
Standings button to the admin sports season page for individual sports.
https://claude.ai/code/session_012ACmUs2vAwEF9jZu7Guos2
