make pass state part of this repo's structure

[blaggacao]

Is your feature request related to a problem? Please describe.
My passwords are part of my environment, I want them to be persisted under the vigorous structure and management of this repository, instead of acquiring a satellite repository state.

Describe the solution you'd like
Thanks to the advent and example of agenix, it should be at least conceivable to implement a pass-compliant script that honours the agenix precedent of stowing configuration metadata.

Describe alternatives you've considered
This would be so awesome that no alternative comes even close 😃

Additional context

• https://github.com/ryantm/agenix
• add git diff filter support ryantm/agenix#14 (agenix itself might be even sufficiently extensible or something called agenix-pass to keep provenance proof in the name)

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[nrdxp]

Indeed, I'm glad you opened this, as I have been thinking about this alot. I'll be pretty busy the next couple of days, but I should have some time once the new year starts to take a good crack at this.

[blaggacao]

I think #180 (comment) inadvertedly brought the solution (impermanence)