Contract 9.12.0

battles_decks answers a page at a time, in lighter rows (Jamie, 2026-09-26). A player's whole history at limit 30 was about 47,000 characters, next to the 48,000-character result cap, because every row carried eight card objects and the archetype object.

• Rows name their cards in one line (card_names, forms prefixed: Evo, Hero) with archetype_label and tower_troop_name; cards, tower_troop and archetype ride only the one deck asked for.
• deck_hash returns that one deck: its row with the cards (id, name, form), tower troop and archetype in full, its duel rounds in duel_decks, and the window's totals, so its share reads as in the list.
• offset pages the sorted list; total_decks counts it and next_offset starts the next page (null on the last). The list is no longer cut at the 100 most-played decks before sorting, so sort: win_rate ranks every deck.
• verbosity: compact drops each row's modes and level detail and keeps the record, share, dominant_mode and mean_level_gap.
• duel_decks read each round's own deck_hash and result (0182).

The list rows' card objects and archetype object moved to the single-deck read.