Entrypoint for the standalone cherry binary (ADR 0007): argv →
Cherry.CLI.run/1 → exit code. The binary is a thin dispatcher over
the same seam every mix task uses, so the two can never drift.
Only the Burrito release boots this application — mix.exs sets the
mod: entry solely when CHERRY_RELEASE is set at compile time, so
sites embedding cherry as a dependency never start it.