feat(v2.3.0): add ownership intelligence and subdomain discovery

* implement RDAP-based ownership section
* add ownership diffing and change classification
* add passive subdomain discovery via certificate transparency
* highlight interesting subdomains
* introduce Data+ scaffolding for future features
* include ownership and subdomains in export and history

1 files changed, 7 insertions, 0 deletions

diff --git a/DomainDig/DomainOwnershipService.swift b/DomainDig/DomainOwnershipService.swift
new file mode 100644
index 0000000..2c7b738
--- /dev/null
+++ b/DomainDig/DomainOwnershipService.swift
@@ -0,0 +1,7 @@
+import Foundation
+
+enum DomainOwnershipService {
+    static func lookup(domain: String) async -> ServiceResult<DomainOwnership> {
+        await RDAPService.ownership(for: domain)
+    }
+}