Instance selection is now Effect-provided context.
Use these APIs:
InstanceRef for the current project context.WorkspaceRef for the current workspace id.InstanceState.context / InstanceState.directory inside Effect services that require an instance.InstanceStore at entry boundaries that need to load, reload, or dispose project contexts.EffectBridge for native, plugin, or plain JavaScript callback boundaries that need to re-enter Effect with captured refs.Do not add new ambient instance globals. Promise and callback boundaries should either stay in Effect, use EffectBridge, or pass the required context explicitly.