refactor: get instructions from upstream guardian adapters

[psschwei]

Misc PR

Type of PR

• Bug Fix
• New Feature
• Documentation
• Other

Description

• Link to Issue: Fixes investigate top-level guardian intrinsic functions to remove prompt formatting #1017

The goal is to move the instruction logic out of the guardian helper function and into the upstream io.yaml files for each adapter/intrinsic.

I've included a mellea/backends/adapters/_overlays/ directory with the updated io.yaml files as a temp fix until the actual files are available on Hugging Face. We could merge this now and then delete the overlays once the files are available upstream or wait until the upstreams are available. Latter has a small risk of downtime / tests breaking for a short while.

Testing

• Tests added to the respective file if code was changed
• New code has 100% coverage if code as added
• Ensure existing tests and github automation passes (a maintainer will kick off the github automation when the rest of the PR is populated)

Attribution

• AI coding assistants used

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[psschwei]

cc @pronics2004

[psschwei]

Also note: there's updated io.yaml files for every version of the models. It was very little overhead to generate them all so I included them, but we may ultimately want to do a subset of them.

[psschwei]

Latest commit uses pre-existing config file override