* feat(cli): expose native object link info
- add versioned, cache-independent native link metadata for program objects
- document the experimental runtime ABI and provide C-driver and Apple linker examples
- verify ABI mismatch, FFI parity, packed installs, and external linking in CI
* fix(example): validate native runtime pack identity
- Add a strict versioned manifest and direct C ABI lowering for both backends.
- Link declared native inputs through the CLI and compiler APIs with precise diagnostics.
- Cover the ABI under plain and sanitized integration tests and document its contracts.