Single Instance

carbon add plugin SingleInstance

import { singleInstance } from '@dotcarbon/plugin-single-instance'

const status = await singleInstance.status()
if (!status.isPrimary) console.log('Arguments were forwarded to the primary app')

The plugin derives a stable mutex name from application identity. Secondary launches forward their arguments or URL inputs to the primary process and then exit. Register it early when deep links or file associations must be routed to an existing window.