[cmalinmayor]

Proposed Change

Replace Claude spaghetti code with nicer abstractions that make sense.

Does break existing registries by changing representations to also be inside directories with files named representation.toml

Checklist

Go through these things before merge. Actions should run automatically to test them, but for information on how to run locally, see CONTRIBUTING.md.

• I have added tests that prove that my feature works in various situations or tests the bugfix (if applicable).
• I have checked that the tests pass and I maintained or improved test coverage (just test-cov).
• I have written docstrings for any new public functions and classes.
• I have checked that linting and formatting pass (just lint).
• I have checked that mypy type checking passes (just typecheck).

Further Comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...