test(release): add mc-host lifecycle qualification gates

[ahrav]

Summary

• add retained-fd, lifecycle, payload, and installed-release verification tooling
• enforce distinct qualification and installed-product evidence schemas
• wire focused release checks into CI without publishing

Stack

PR 9 of 10. Base: stack/mc-host-08-cli.

Validation

• bun run test:release
• release schema, payload, proof, and attestation tests

Post-Deploy Monitoring & Validation

During qualification, watch target smoke, attestation, package-integrity, timing, storage, and process-crash proof results. Do not promote if any required target artifact or proof is absent. Owner: release maintainers.

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