Adds the "Règles de jeu" section: deck construction, copy limits and equality key (name for Pokémon, card number for One Piece), special-rule cards, current formats, rotation calendar and ban lists as of 2026-11-07, each with its official source and consultation date. Defines the proposed game-card identity and lists the card fields the deck validator and recommender need, with what the catalogue already holds.

Documentation only (task T38). Unverified points are marked "à confirmer"; closed questions for the experts are in game-rules/open-questions.md.