feat(admin,api,player): 返水流程优化、账单详情与数据库重置

优化返水预览/确认/作废，新增玩家账变详情与后台一键重置为 seed 数据，并修复 dev 启动时 3000 端口占用。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/src/domains/ledger/wallet.service.ts

@@ -259,6 +259,28 @@ export class WalletService {
     return this.prisma.$transaction(run);
   }
 
+  async getTransactionDetail(userId: bigint, transactionId: string) {
+    const tx = await this.prisma.walletTransaction.findFirst({
+      where: { userId, transactionId },
+    });
+    if (!tx) return null;
+
+    return {
+      transactionId: tx.transactionId,
+      transactionType: tx.transactionType,
+      amount: tx.amount.toString(),
+      balanceBefore: tx.balanceBefore.toString(),
+      balanceAfter: tx.balanceAfter.toString(),
+      frozenBefore: tx.frozenBefore.toString(),
+      frozenAfter: tx.frozenAfter.toString(),
+      referenceType: tx.referenceType,
+      referenceId: tx.referenceId,
+      remark: tx.remark,
+      createdAt: tx.createdAt.toISOString(),
+      betNo: tx.referenceType === 'BET' ? tx.referenceId : null,
+    };
+  }
+
   async getTransactions(userId: bigint, page = 1, pageSize = 20) {
     const skip = (page - 1) * pageSize;
     const [items, total] = await Promise.all([