Bun 1.3 compiled modules report the bunfs mount root from import.meta.dir, not their source-layout module directory. The prior helper walked four directories above that value and escaped the embedded root.
Append packages to the compiled bunfs root, while keeping a guarded suffix path for future module-specific import.meta.dir semantics. Update regression tests to pin the compiled-root behavior observed by a bun build --compile probe.
Fixes#1514