openpanel CLI preview (rewrite/v2 @ 35c2a13)

Unversioned preview build of the self-hosting CLI from rewrite/v2 (3a87941, local), pinned to the supporter images docker.openpanel.dev/openpanel-dev/{api,dashboard}:rewrite-v2-35c2. Run openpanel upgrade --supporter in the install folder. Not a release; install.sh and self-update ignore it.