Add native-binary-compat module that reads ELF/Mach-O/PE headers to
determine the actual target platform/arch of the .node binary. This
eliminates the macOS false-positive where dlopen loads a linux-x64
binary without throwing.
- Parse ELF (linux), Mach-O (darwin), and PE (win32) binary formats
- Use header-based check as primary signal, dlopen as secondary
- Update pre-flight check in CLI to use the new module
- Add unit tests for all binary formats and cross-platform scenarios
ardaaltinors