c5a511e4fe
Drive ATTACK frames through the headless receive conductor and assert on engine board state (node-native harness). Two cases: follower -> enemy leader (leader life drops by atk, attacker spent) and a lethal follower-vs-follower trade (both removed). ATTACK opcode confirmed = 10 (NetworkBattleDefine.PlayActionType). Headless view-untangle (no Engine logic edits; drift clean): - IBattlePlayerView.AttackSelectControl -> non-null HeadlessAttackSelectControl (no-op RegisterAttackPair/ResetCardAfterAttack); IsCardTranslatable left to base. - IBattleCardView.CardInfo -> backing card via BuildInfo (so IsCardTranslatable reads authentic IsClass); class/null view ctors now chain : base(buildInfo). - IBattleCardView._inPlayFrameEffect -> non-null no-op control. - Seed Certification.viewer_id headless so the IsRecovery target parse (vid != UserViewerID) does not throw inside SavedataManager and silently drop the parsed targetList. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>