several distinct credential shapes, one per line, for multi-detector coverage
github_pat=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
stripe_live=@@STRIPE@@
slack_bot=@@SLACK@@
google_api=AIzaSyA1B2C3D4E5F6G7H8I9J0K1L2M3N4O5P6Q
