Upgrades the standalone cherry binary in place (ADR 0007).
Usage
cherry upgrade [--check] [--version vX.Y.Z] [--json]Resolves the latest stable GitHub release (or --version for a
specific tag, prereleases included), downloads this platform's binary,
verifies it against the release's SHA256SUMS, and swaps the running
executable — rustup/deno style.
--check only reports whether an upgrade is due and works anywhere;
the swap itself needs the standalone binary. Mix users upgrade with
mix deps.update cherry as ever.
--api-base URL retargets the GitHub API for mirrors and tests.