sanity deploy does not return a non-zero exit code for "Unauthorized - Session not found"

[luke-symes]

Describe the bug

sanity deploy does not return a non-zero exit code for the CLI error "Unauthorized - Session not found".

This causes a GitHub Action that automates deployments to fail silently.

To Reproduce

Create a GitHub Action with the following step:

      - run: npm run deploy
        env:
          SANITY_AUTH_TOKEN: "invalid token"

Expected behavior

It's expected that the workflow will signal a failure in GitHub checks.

Screenshots

Which versions of Sanity are you using?

@sanity/cli (global)  3.74.1 (up to date)
@sanity/cli           3.74.1 (up to date)
@sanity/vision        3.74.1 (up to date)
sanity                3.74.1 (up to date)

What operating system are you using?

macOS 15.3 (24D60)

Which versions of Node.js / npm are you running?

  npm: 10.9.2
  node: 22.13.0