Derived fixed observations, not raw UART.
[    4.584221] K230_INIT_EXEC_RETURN_V1 ret=0
[    4.584235] K230_INIT_EXEC_TRANSITION_V1 point=kernel-init-return
[    4.584361] K230_INIT_EXEC_TRANSITION_V1 point=first-user-ecall
Bytes after the last record, then nothing within the 180-second bound: b'\r\n\x1bP+q6E616D65\x1b\\'
No qualified login/primary prompt within180 seconds.