Fix CI workflow: Remove intentional exit 1 failure

[austenstone]

Problem

The CI workflow (run #18366865616) was failing due to an intentional exit 1 command in the workflow definition.

Error Details

From the failed workflow run:

• Job: build
• Failed Step: Run exit 1
• Error: Process completed with exit code 1
• Commit: ad899c8

Changes

This PR fixes the CI workflow by:

• ✅ Removing the exit 1 step that was causing the workflow to fail
• ✅ Uncommenting the actions/checkout@v5 action for proper repository access
• ✅ Adding a success message step to confirm workflow completion

Workflow Logs

buildRun exit 12025-10-09T05:50:53.5914630Z ##[group]Run exit 1
buildRun exit 12025-10-09T05:50:53.5915177Z exit 1
buildRun exit 12025-10-09T05:50:53.5945245Z shell: /usr/bin/bash -e {0}
buildRun exit 12025-10-09T05:50:53.5945813Z ##[endgroup]
buildRun exit 12025-10-09T05:50:53.6009765Z ##[error]Process completed with exit code 1.

Testing

After merging, the CI workflow should run successfully without failures.