* Clean up leftover JS-era config, deps, and docs after the TypeScript migration
* Address review: keep .jsx in resolve.extensions, drop .js from loader tests, includes-based e2e validator filter
* Keep @babel/node for a separate deps cleanup round
* Keep js/jsx in rspack loader tests
This introduces a pre-commit hook that automatically removes unused require
statements detected by clj-kondo, preventing CI failures.
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
