onVercelProjectDomainUpdated emits when a project domain’s name, redirect, status code, or Git branch changes.
automations/watch-updated-vercel-project-domains.automation.ts
account defaults to the project’s Vercel OAuth binding.
Trigger data
Returnstype: "project.domain.updated". payload.previous and payload.next each contain domain, nullable gitBranch, nullable redirect, and nullable redirectStatusCode; payload.project identifies the owning project.