Cambiar el método de validación SSL

Switch a domain's SSL Domain Control Validation (DCV) method between HTTP (default) and TXT (fallback, design.md D11)

Escritura · requiere el permiso accounts:write.

This is the escape hatch for domains whose CNAME does not yet route to Cloudflare: HTTP DCV cannot complete without traffic reaching the origin, but TXT DCV validates purely from a DNS record. Scoped to the authenticated admin via findOwned() (404 if not owned). Calls patchSsl() with the NEW method (a "switch", as opposed to verify()'s same-method "re-trigger") and persists it. When switching TO TXT, the ssl_validation_string is captured best-effort from the response — Cloudflare frequently has not yet populated ssl.validation_records at PATCH time (confirmed against a live Cloudflare response: it is filled in asynchronously, a few seconds later). When the PATCH response comes back empty, a best-effort follow-up get() is issued immediately to try to capture it right away — this covers the common case where the value is already available a moment later, so the customer sees the TXT record without having to wait for a subsequent verify()/sweep. The follow-up is best-effort: if it also comes back empty, or Cloudflare fails/is unreachable for it, the switch still succeeds and a later verify()/sweep captures the value once available (bug fix: the TXT dns_record was never shown to the user when the PATCH raced Cloudflare's population of ssl.validation_records).