fix(mining-wallet-service): remove remaining blockchain references

- Remove HOT_WALLET and COLD_WALLET from initializeCoreAccounts
- Remove BLOCKCHAIN from counterpartyType union

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/mining-wallet-service/src/application/services/system-account.service.ts

@@ -10,8 +10,6 @@ export interface InitializeSystemAccountsInput {
   headquarters: { name: string; code: string };
   operation: { name: string; code: string };
   fee: { name: string; code: string };
-  hotWallet: { name: string; code: string; blockchainAddress?: string };
-  coldWallet?: { name: string; code: string; blockchainAddress?: string };
 }
 
 @Injectable()
@@ -25,7 +23,7 @@ export class SystemAccountService {
   ) {}
 
   /**
-   * 初始化核心系统账户（总部、运营、手续费、热钱包）
+   * 初始化核心系统账户（总部、运营、手续费）
    */
   async initializeCoreAccounts(input: InitializeSystemAccountsInput): Promise<SystemAccount[]> {
     const accounts: SystemAccount[] = [];
@@ -54,26 +52,6 @@ export class SystemAccountService {
     });
     accounts.push(fee);
 
-    // 热钱包
-    const hotWallet = await this.systemAccountRepo.create({
-      accountType: 'HOT_WALLET',
-      name: input.hotWallet.name,
-      code: input.hotWallet.code,
-      blockchainAddress: input.hotWallet.blockchainAddress,
-    });
-    accounts.push(hotWallet);
-
-    // 冷钱包（可选）
-    if (input.coldWallet) {
-      const coldWallet = await this.systemAccountRepo.create({
-        accountType: 'COLD_WALLET',
-        name: input.coldWallet.name,
-        code: input.coldWallet.code,
-        blockchainAddress: input.coldWallet.blockchainAddress,
-      });
-      accounts.push(coldWallet);
-    }
-
     // 发布初始化事件
     await this.outboxRepo.create({
       aggregateType: 'SystemAccount',

backend/services/mining-wallet-service/src/application/services/user-wallet.service.ts

@@ -309,7 +309,7 @@ export class UserWalletService {
     amount: Decimal,
     transactionInput: {
       transactionType: TransactionType;
-      counterpartyType?: 'USER' | 'SYSTEM_ACCOUNT' | 'POOL' | 'BLOCKCHAIN' | 'EXTERNAL';
+      counterpartyType?: 'USER' | 'SYSTEM_ACCOUNT' | 'POOL' | 'EXTERNAL';
       counterpartyAccountSeq?: string;
       counterpartyUserId?: string;
       counterpartyAddress?: string;