fix(mpc-service): 注册DistributedLockService到InfrastructureModule

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

backend/services/mpc-service/src/infrastructure/infrastructure.module.ts

@@ -23,6 +23,9 @@ import { EventConsumerService } from './messaging/kafka/event-consumer.service';
 import { BackupClientService } from './external/backup';
 import { BlockchainClientService } from './external/blockchain';
 
+// Redis
+import { DistributedLockService } from './redis/lock/distributed-lock.service';
+
 @Global()
 @Module({
   imports: [
@@ -43,6 +46,9 @@ import { BlockchainClientService } from './external/blockchain';
     // External Services
     BackupClientService,
     BlockchainClientService,
+
+    // Redis (分布式锁)
+    DistributedLockService,
   ],
   exports: [
     PrismaService,
@@ -50,6 +56,7 @@ import { BlockchainClientService } from './external/blockchain';
     EventConsumerService,
     BackupClientService,
     BlockchainClientService,
+    DistributedLockService,
   ],
 })
 export class InfrastructureModule {}