Add a tracking domain

{  "id": "tdom_e2r5t8y1u4i7o0p3a6s9d2f5",  "projectId": "proj_tz4a98xxat96iws9zmbrgj3a",  "hostname": "t.example.com",  "status": "pending_dns",  "failureReason": null,  "dnsRecords": [    {      "type": "CNAME",      "name": "t.example.com",      "value": "p7k2m9x4.track.voidhash.link",      "purpose": "routing"    }  ],  "lastCheckedAt": null,  "activatedAt": null,  "createdAt": "2026-03-03T12:00:00.000Z"}

{  "error": {    "type": "invalid_request",    "code": "invalid_tracking_domain",    "message": "t.example.com is already a tracking domain of this project.",    "param": "hostname"  }}

{  "error": {    "type": "unauthenticated",    "code": "invalid_api_key",    "message": "This secret key is not valid."  }}

{  "error": {    "type": "permission_denied",    "code": "permission_denied",    "message": "Insufficient permissions."  }}

{  "error": {    "type": "not_found",    "code": "project_not_found",    "message": "There is no project proj_tz4a98xxat96iws9zmbrgj3a, or this credential cannot use it.",    "param": "projectId"  }}

{  "error": {    "type": "internal",    "code": "internal_error",    "message": "Something went wrong on our side. Try again, and contact support with the Request-Id header if it keeps failing."  }}

{  "error": {    "type": "unavailable",    "code": "tracking_domains_unavailable",    "message": "This deployment does not host tracking domains. Put a reverse proxy on your own domain in front of the API instead."  }}