fastlane's Token.from_json_file requires the .p8 contents inline under a
"key" field (PEM with embedded newlines), but the JSON used "key_filepath"
(a path), so spaceship failed with "missing field(s): key" at login.
Decode the .p8 and write its contents into "key", built with jq so the PEM
newlines are escaped correctly. No longer writes the raw .p8 to disk.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Eric Bailey
cc8162bf11