Chain drama: fee tiers, congestion, mempool drops, address poisoning, clipboard hijack, phishing; selected-button style

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/Decentralized.Domain/Wallet.cs

@@ -22,6 +22,9 @@ namespace Decentralized.Domain
         public string Name;
         /// <summary>玩家起的名字；空时用默认名。</summary>
         public string Label;
+        /// <summary>转账记录（最新的在前），PLEDGER 发送页的"最近"列表从这里取。</summary>
+        public List<TxRecord> History = new List<TxRecord>();
+
         /// <summary>硬件钱包被动过手脚（供应链投毒）：别人手里有助记词。玩家看不到。</summary>
         public bool Poisoned;