Contract 7.1.6

From the Elixir Gym's first-engagement journey: a new agent's first ten questions (feedback #256-#262).

• battles_meta_decks takes min_players, and says when most of the first rows are one player's own deck; the shrinkage note says win_rate is the raw rate at any size and only shrunk_win_rate is withheld under 30 observations (#256).
• badges_rarity over a one-player segment says every badge listed is that player's, so the order is not rarity, and points at a population (#257).
• elixir_timeline player_tag includes that member's battle sessions from a clan's timeline, echoes the filter in applied, and says when the tag is not one of the reader's players or clan members (#258). A clan entry's activity also counts learned_here_played_before, and the learned-versus-played note covers both directions (#259).
• The tool guide routes "who should be promoted, demoted or removed" to the facts that answer it (#260), and the deck and play examples name decks by archetype and check the collection, as the server instructions ask (#261).

Additive.