Use Vite

[mwarman]

📢 Instructions

• Begin with a DRAFT pull request.
• Follow italicized instructions to add detail to assist the reviewers.
• After completing all checklist items, change the pull request to READY.

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🔧 Change Summary

List the changes included in this pull request.

• Migrate from Create React App (CRA) to Vite
• Migrate tests from Jest to Vitest

📝 Checklist

Pull request authors must complete the following tasks before marking the PR as ready to review.

• Complete a self-review of changes
• Unit tests have been created or updated
• The code is free of [new] lint errors and warnings

🧪 Steps to Test

Describe the process to test the changes in this pull request.

1. All tests passing with coverage
2. No lint errors
3. Test in browser

🔗 Additional Information

Optionally, provide additional details, screenshots, or URLs that may assist the reviewer.

• ...