Reuse downloaded modules across Go versions, runner architectures, and
runner images on the same OS instead of duplicating them in each build
cache archive.
Restore and save each entry independently, running operations in parallel
when safe. Serialize restores for overlapping or aliased paths, preserve
the original paths for the post step, and report cache-hit only when both
entries match their primary keys.
Update the documented manual restore keys and generated action bundles.
* Migrate to ESM and upgrade dependencies
* Remove unused tsconfig.eslint.json
* bump version to 7.0.0 in package.json and package-lock.json
* Add ESM migration note to README for V7
* Remove unnecessary devDependencies: ts-node, @types/jest
* npm audit fix
* Update README with ESM migration details
Clarified migration details to ESM for action compatibility.
* Downgrade @types/node to ^24, clean up tsconfig and README.
