Wrong returned status code (successful vs unsuccessful results)

[Thanatermesis]

Issue

I think that I reported this before but cecli still have wrongly returned status code, for example see this case / test:

/t/test git:master ❯❯❯ if cecli testfile.txt --no-suggest-shell-commands --message="change foo to wombat"  ; then echo yes ; else echo noooooooooooooooooooooooooooooooooo ; fi                                                                                                                                               modified
─────────────────────────────────────────────────────────────────────────────────────────────────
litellm.MidStreamFallbackError: litellm.ServiceUnavailableError: Vertex_ai_betaException -
{
  "error": {
    "code": 503,
    "message": "This model is currently experiencing high demand. Spikes in demand are usually temporary. Please try again later.",
    "status": "UNAVAILABLE"
  }
}
 Original exception: ServiceUnavailableError: litellm.ServiceUnavailableError: Vertex_ai_betaException -
{
  "error": {
    "code": 503,
    "message": "This model is currently experiencing high demand. Spikes in demand are usually temporary. Please try again later.",
    "status": "UNAVAILABLE"
  }
}

Response parsing error.
yes
/t/test git:master ❯❯❯

The model failed and so cecli was not able to run my request, this should have returned a status 1 which should have resulted in the "noooooooo" answer in the end (and not the "yes" one).

Seems like there's multiple cases on cecli that returns "success" where clearly was not success, I recommend to run cecli against cecli to search for these cases and fix the issues

Version and model info

cecli 1.0.0rc13