- Rename `stdout` step to `stdout01` in the GitHub Actions workflow
- Rename `check stdout` step to `check stdout 01`
- Update references to `stdout` to `stdout01` in echo and grep commands
- Add a new step `stdout02` for SSH command execution with stdout capture
- Add a new step `check stdout 02` to validate the output of `stdout02` step
Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>