Add Vonza custom domain template (vonza.com.custom-domain)

[UsamaaAbbas]

Description

New template for Vonza — an all-in-one creator platform (courses, communities, websites, funnels). Customers connect their own domains to Vonza-hosted websites and landing pages. The template creates the apex A record pointing at the customer's assigned Vonza load balancer, a www CNAME, and the per-domain AWS ACM certificate-validation CNAME used to issue the customer's SSL certificate.

Type of change

• New template
• Bug fix (non-breaking change which fixes an issue in the template)
• New feature (non-breaking change which adds functionality to the template)
• Breaking change (fix or feature that would cause existing template behavior to be not backward compatible)

How Has This Been Tested?

• Template functionality checked using Online Editor
• Template file name follows the pattern <providerId>.<serviceId>.json
• resource URL provided with logoUrl is actually served by a webserver

Checklist of common problems

• syncPubKeyDomain is set — public key published at _dcpubkeyv1.vonza.com (RS256, live)
• warnPhishing is not set alongside syncPubKeyDomain
• syncRedirectDomain is set
• no TXT record contains SPF content (template has no TXT records)
• txtConflictMatchingMode — n/a, template has no TXT records
• no variable is used as a bare full record value in a TXT record (variables appear only in pointsTo of A/CNAME, required since the load balancer IP and ACM target are per-customer)
• no bare variable is used as the full host label — exception, justified: %acmhost% in the ssl group is the AWS ACM DNS-validation CNAME. Its full label (_<hash>) is dictated by AWS ACM and cannot carry a fixed prefix. All apply URLs are signed (syncPubKeyDomain), limiting misuse. Same pattern as the existing blink.new.domain-connect.json template (%acm_host% → %acm_target%).
• no variable is used in the host field to create a subdomain — %acmhost% creates a validation record, not a delegated subdomain
• %host% does not appear explicitly in any host attribute
• essential — not set; all three records are required for the service to function, none are user-modifiable extras

Online Editor test results

Editor test link(s):

Test vonza.com/custom-domain example.com/@

Test vonza.com/custom-domain example.com/shop

🤖 Generated with Claude Code

[github-actions]

✅ JSON Filename Check Passed

[github-actions]

✅ JSON Schema Validation Passed

[github-actions]

Linter OK

vonza.com.custom-domain.json

Level	Code	Note

[github-actions]

PR Description Check Passed

All required sections are filled in correctly.

Details

  OK  Type of change: 1/4 checkboxes ticked
  OK  How Has This Been Tested?: all 3 checkboxes ticked
  OK  Checklist of common problems: 10/10 checkboxes ticked
  OK  Online Editor test results: 2 link(s) found
  OK  Template coverage: all 1 template(s) covered
Labels to remove: Checklist of common problems not complete, Forged editor links, PR description incomplete, Test links missing

PR description check PASSED