Mirrors permission-pilot's policy: only the 6 smoke locales (en-US, de-DE, ja-JP, ar, zh-CN, pt-BR) check phoneScreenshots PNGs into the repo. Non-smoke locales are excluded via .gitignore. Drops fastlane/metadata/android/ from ~67 MB to ~7 MB and prevents future bloat from full regens. Play Store's supply retains previously-uploaded screenshots for locales not pushed, so full localization is maintained by occasional manual regen + screenshots_only upload.
The root Gemfile only ever declared the fastlane gem and lived next to fastlane configuration anyway. Moving it under fastlane/ matches that ownership and keeps the repo root cleaner.
release-gplay job now sets BUNDLE_GEMFILE=fastlane/Gemfile and runs ruby/setup-ruby with working-directory=fastlane so bundler-cache resolves the moved Gemfile. fastlane lanes still run from the repo root.