Contract 8.0.0

The major before open beta (Jamie, 2026-09-24): two breaking changes, nothing else.

• rankings_players, rankings_clans and rankings_clan_ladder serve the snapshot's season_id as a number, like every other season_id (it was the string "135" beside applied.season 135 in the same response) (#345).
• battles_meta_decks min_players counts repeat players, those with two or more battles on the deck, carried on every row as repeat_players; players stays every distinct player. Two players who tried a deck once no longer carry one player's deck past min_players: 2 (#348). A season rollup row not yet rebuilt is judged on players until the nightly, and a note says so.

Breaking: a client parsing rankings season_id as a string, or relying on min_players counting one-battle players, must update. Every first-party client was checked: none reads either.