Thank you for sharing! Very interesting :)
Here's a discussion on how orgs typically keep their secrets:
And while it's an atypical approach, you could encrypt and check your secrets in:
alluded to , git's a pretty generic tool where you could keep anything there. Deciding what should go there is kind of a matter of figuring it out over time between you and your collaborators.
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We strive for transparency and don't collect excess data.