feat: add RFC 9537 redaction support, vCard address/fax parsing, and registrar address fields

- Parse the top-level RDAP `redacted` array (RFC 9537) into a new `redactions` field on `DomainRecord`; set `privacyEnabled` when any redaction references "registrant"
- Expose `street`, `city`, `state`, `postalCode`, `country`, and `countryCode` on both `RegistrarInfo` and `Contact`; extract ISO 3166-1 alpha-2 from the vCard `cc` parameter (RFC 8605)
- Split `tel` entries by fax type parameter (`"fax"` / `["work","fax"]`) into separate `tel` and `fax` lists; collect multiple email addresses as an array, collapsing singletons to a plain string
- Prefer an exact `registration` event match over `reregistration` when extracting `creationDate` (RFC 9083)
- Merge `redacted` arrays in `mergeRdapDocs`, deduplicating by JSON identity
- Split `adr` street on `\r?\n` only (not commas) to avoid splitting inline comma-separated addresses

README.md

@@ -508,6 +508,12 @@ interface DomainRecord {
     url?: string;
     email?: string;
     phone?: string;
+    street?: string[]; // address (RDAP only)
+    city?: string;
+    state?: string;
+    postalCode?: string;
+    country?: string;
+    countryCode?: string; // ISO 3166-1 alpha-2, from the vCard "cc" parameter
   };
   reseller?: string;
   statuses?: Array<{
@@ -549,7 +555,15 @@ interface DomainRecord {
     country?: string;
     countryCode?: string;
   }>;
-  privacyEnabled?: boolean; // registrant appears privacy-redacted based on keyword heuristics
+  privacyEnabled?: boolean; // registrant appears privacy-redacted based on keyword heuristics or RFC 9537 redactions
+  redactions?: Array<{
+    name: string; // e.g. "Registrant Email"
+    prePath?: string;
+    postPath?: string;
+    replacementPath?: string;
+    method?: string; // e.g. "emptyValue", "partialValue"
+    reason?: string;
+  }>; // RFC 9537 redaction metadata (RDAP only)
   whoisServer?: string; // authoritative WHOIS queried (if any)
   rdapServers?: string[]; // RDAP URLs tried (bootstrap bases and related/entity links)
   rawRdap?: unknown; // raw RDAP JSON (only when options.includeRaw)