e4691d616b
Client RealTimeNetworkAgent.SetNetworkInfo iterates the synchronize-data dict in insertion order. The "uri" key, when recognized as Matched, calls GameMgr.InitializeSelfInfo which sets _selfDeck = null. Any "selfDeck" processed before "uri" gets wiped; Matching.StartBattleLoad then crashes on null.Select(...). Pre-refactor ToJson built a Dictionary envelope-first then appended body keys, so the bug never surfaced. The typed-body rewrite inverted the order — restoring envelope-first matches the prod wire. Regression test BuildMatched_KeyOrder_PutsUriBeforeSelfDeckAndSelfInfo locks the contract. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>