TM启动正常，但日志总redis命令执行错误！

org.springframework.data.redis.RedisSystemException: Error in execution; nested exception is io.lettuce.core.RedisCommandExecutionException: ERR DISCARD without MULTI

Start by reproducing TM startup with the reported Redis error and tracing the Redis transaction handling that emits `ERR DISCARD without MULTI`. The payload names no source files or tests, so first locate the TM Redis integration and its transaction command sequence; done means identifying the cause and verifying that startup no longer produces the erroneous command.

Written by the indexing model from the issue text.