Contract 9.12.5

cards_catalog lists the tower troops the current /cards catalog lists, four today, not five (#44). The fifth, 29000000 "Archer Queen", was never sent by the game's API: a test fixture leaked into the retired elixir-bot's raw payloads and was replayed as a catalog fetch. The catalog now follows the newest fetch, so a replayed old catalog, or a support card first seen in a battle or a profile, is not listed until /cards lists it, and a tower troop /cards stops listing leaves tower_troops. Every card stays on the record for the battles that name it. The Archer Queen card is 26000072. Behaviour correction; no output-schema change.