Contract 7.2.0

Tower troops, a deck's ninth card (Jamie, 2026-09-24; Gym #282).

• battles_meta_cards takes tower_troops: true: one row per tower troop, with usage share, players, raw and shrunk win rate and the mode split, over the same population, window and mode as the eight-card read (decided_battles is the same number).
• cards_card answers a tower troop by id or name: the catalog row (type: tower_troop), when it was first recorded in a deck, season.all usage and win rate, and on a clan segment who plays and holds it. Season history, top decks and partners stay the eight deck cards'; cards_synergy still pairs deck cards only and says where tower troops are read.
• Deck identity (deck_hash) has carried the tower troop all along, and full-verbosity deck rows carry tower_troop.

Additive; a minor version for the new input.