When core/plugin imported core/internal/api/orchestrator/v1 for the
PluginVisibility enum, every consumer of core/plugin (including the
orchestrator) transitively pulled in core's generated bindings — and
those bindings register the same proto descriptors as the orchestrator's
own bindings, panicking at startup.
Move the label helper into the CLI's cmd package where it belongs;
core/plugin no longer references the proto package at all.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
af7f44c34d