Domain stuck under different context after disconnecting from Lovable.dev

Current behavior: Running vercel domains add jobseekershub.app fails with: "The domain jobseekershub.app already exists under a different context."

Expected behavior: The domain should be addable to my project since I've disconnected it from its previous use.

Domain jobseekershub.app was previously connected as a custom domain inside a Lovable.dev project (Lovable uses Vercel infrastructure under the hood for custom domain hosting).
I disconnected the domain from Lovable's project settings (confirmed with a "Domain disconnected" success message).
I updated DNS at my registrar (IONOS) to point directly at Vercel: A record @ -> 76.76.21.21, CNAME www -> cname.vercel-dns.com. This is confirmed publicly resolving via DNS-over-HTTPS lookups.
Running vercel domains add jobseekershub.app under my project still fails with "already exists under a different context."

Account: rizingstar Team: noman-khans-projects-a0cc8269 Project: ats-career-boost Domain: jobseekershub.app Framework: Vite/React (deployed via CLI)