Bundle the compiled Apple core — vnidrop.xcframework plus the generated UniFFI
bindings (Vnidrop.swift, a source file that lives outside the xcframework) — into
VnidropCore-<version>.zip with a checksum, and attach it to the GitHub Release.
This lets a consumer (e.g. Xcode Cloud, later) use the prebuilt core instead of
installing Rust and running build-core.sh.
No duplicate builds: the release job compiles the core once (build-apple-dmg ->
build-core.sh release), links it into the signed DMG, and package-core.sh only
zips that same output. Package.swift is unchanged (still binaryTarget(path:)).
- apple/scripts/package-core.sh: stage xcframework + Vnidrop.swift and zip them
with a sha256sum/shasum-compatible checksum sidecar (macOS-native).
- Makefile: package-apple-core target.
- apple-release.yml: run package-apple-core after the DMG and upload the zip +
checksum in the macOS artifact.
- assemble-release.sh: verify the core zip's checksum, copy it into the final
assets, and list it in release-manifest.json + SHA256SUMS (+ fixture update).
