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Authenticate signing environment checks - #67
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dannydover
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November 9, 2026 18:27
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The hosted Mac received HTTP 403 on an unauthenticated environment request. A separate hosted probe passed both environment checks using the short-lived GitHub job token; the earlier 403's precise cause remains unverified.
This change grants job-scoped Actions read and existing Contents read to the two signing preflight jobs, passing the token explicitly only to their environment-check steps. Actions read applies to the whole job, including checkout, and can read repository Actions data beyond environment metadata. Requests remain restricted to the two fixed GitHub endpoints, reject redirects, and fail closed on invalid responses or policies. Upload remains disabled.
Local validation: nine environment-check tests, six existing workflow tests, the indexed repository privacy guard, YAML parsing and Python compilation passed. Credential-free PR CI is pending. No signing or upload is performed by this PR.