Module harvest 

Cross-search: when the package resolver can’t map a Linux package to a Homebrew/Chocolatey equivalent, fire a lightweight “unfulfilled request” to ZPackageIndex ({base}/linux/request). A server-side hourly scheduler drains the queue and resolves the mapping (Repology), so a FUTURE native sandbox/HCS build resolves the package without the VM fallback. The build itself does zero apt/buildah work — this is one cheap HMAC POST.

There is exactly one HMAC signer in the workspace (zlayer_toolchain::package_index::sign) and the endpoint base lives in zlayer_types::package_index::PackageIndexConfig; this module reuses both rather than re-deriving either.

Functions

report_unfulfilled

Fire-and-forget: report a Linux package the resolver could not map, so the index can backfill it. manager is "apt"|"apk"; distro e.g. "debian-12". No-op when the HMAC secret isn’t baked in. Never blocks/fails the build.