Sort bone data into directories by boneset

🎯 Goal / Objective

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Bone data in the app is organized by "boneset," sets of related bones based on individual PowerPoint files where we're getting our data. But they are currently all pooled into the same parent folder, making the data hard to browse through and modify in case adjustments are needed.

✅ Tasks to be Completed

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• Sort data by boneset in data folder
• Refactor data extraction to work with the new structure

Acceptance Criteria

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• The new feature is implemented as described.
• All related code passes the repository's workflow checks (linting, tests).
• The application runs without errors after the changes are made.
• (If applicable) New automated tests have been added to cover the changes.
• Any related documentation has been updated, including JSDoc comments or docstrings

Additional Context

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Inspect the data folder and the existing data-extraction code to identify how bonesets are currently located and loaded. Organize the data by boneset, update extraction to use the new structure, then run the repository workflow checks and confirm the application still runs without errors.