r0adkll/upload-google-play hides real API errors behind "Unknown error
occurred." Proved the full upload sequence (insert edit -> upload bundle ->
track update -> validate) succeeds with the service account, so the failure was
r0adkll's opaque error handling and/or a base64-encoded SERVICE_ACCOUNT_JSON
secret.
clients/android/ci/play-upload.py does the same sequence with stdlib + openssl
(no pip), reuses the SERVICE_ACCOUNT_JSON secret, tolerates it being raw JSON or
base64, auto-retries commit with changesNotSentForReview, and prints Google's
actual error. Locally dry-run-validated against the live app (both secret forms).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>