`container export` requires the container to be stopped first. When a
running bottle is detected, prompt the user to confirm, stop the
container, then commit. Adds `container_is_running` and
`stop_container` helpers to the macos-container util.
Addresses #240 (comment)
`container system info` is not a valid subcommand and always returned
non-zero, causing a false-positive on the service check. Switch to
`container system status` which is the correct command.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Fail early with a clear message when the Apple Container system service
isn't running, instead of surfacing an opaque XPC connection error mid-build.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>