Repairs projects where notify account was created but Resend domain
provisioning (steps 7-9) failed — e.g., RESEND_API_KEY not yet
configured at project creation time.
- ProvisionNotifyDomain in port.NotifyProvisioner interface
- Provisioner.ProvisionNotifyDomain: creates Resend domain for existing
notify host, upserts DKIM/SPF DNS records in Cloudflare, kicks off
async verification via verifyWithRetry
- POST /projects/{id}/notify/provision handler:
- reads NOTIFY_HOST from credential store (fails if not set)
- rejects if NOTIFY_RESEND_DOMAIN_ID already present (use /verify)
- stores returned domain ID as NOTIFY_RESEND_DOMAIN_ID credential
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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