Contract 6.36.11

The collection tools after the Elixir Gym's third run on them (feedback #201-#203), and the card tools after its fourth (feedback #204-#207).

• years_played null is described as what it almost always is: a read profile with no YearsPlayed badge, which the game first awards after about a year of play, so an account under a year old. It had said the profile was not read yet, which was false for every null checked (#201). players_profile declares the same.
• A clan collection passed as a segment collection is refused as an argument error that says it is a clan collection and gives the route (one segment { clan_tag } per clan), not the not_found an unknown slug gets (#202).
• cards_card on mode tournament says why by_band is empty (a tournament row has no trophy band) instead of claiming the rollup is not filled; battles_meta_cards and battles_meta_decks carry the band note whenever trophy_band meets a mode other than ladder (#204).
• card.first_seen_in_catalog says, when it holds the day Elixir began storing the catalog (2026-09-10), that it is not the card's release: every card present then carries it (#205).
• cards_synergy over one player carries the player's freshness_seconds and recorded_since, as cards_card does (#206).

Additive; one refusal changes class from subject to input.