The prod deploy just failed at Unit Tests even though all 226 tests
passed - the job died on `Upload coverage report` hitting the GitHub
Actions artifact storage quota. ci.yml already treats artifact uploads
as best-effort for this exact reason (comment: "Artifact upload must
never fail the job (storage quota can be full)"), but deploy-prod.yml
and deploy-test.yml were missing the same continue-on-error on their
diagnostic report/screenshot/coverage uploads.
Leaves the actual deployable build artifact uploads (deploy-package-*)
blocking, since a failed deploy really should stop there.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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