Replaces the misc/build.func bootstrap with the two-root core loader.
No other change: the engine contract (var_*, update_script, start,
build_container, description) is identical on both engines.
also port apprise-api, archivebox. Update meilisearch function to support arm64.
invoiceshelf changes are an existing bug.
changes to kasm are required to get docker working, as old docker provided by setup_docker will not work. The --ignore-dep-failures is required as there is a bug in the install script.
Use Corepack-managed Yarn when available so installs respect upstream packageManager metadata and avoid Yarn classic mismatch failures during both fresh installs and updates.
