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, 14 insertions, 0 deletions

diff --git a/DomainDig/HistoryView.swift b/DomainDig/HistoryView.swift
index 35ec723..6f3d1a9 100644
--- a/DomainDig/HistoryView.swift
+++ b/DomainDig/HistoryView.swift
@@ -147,6 +147,20 @@ struct HistoryDetailView: View {
                     onEditNote: nil
                 )
                     .padding(.top, 16)
+                OwnershipSectionView(
+                    rows: DomainViewModel.ownershipRows(from: snapshot),
+                    loading: false,
+                    error: snapshot.ownershipError,
+                    showsHistoryPlaceholder: !DataAccessService.hasAccess(to: .ownershipHistory)
+                )
+                .padding(.top, 16)
+                SubdomainsSectionView(
+                    rows: DomainViewModel.subdomainRows(from: snapshot),
+                    loading: false,
+                    error: snapshot.subdomainsError,
+                    showsExtendedPlaceholder: !DataAccessService.hasAccess(to: .extendedSubdomains)
+                )
+                .padding(.top, 16)
                 if let comparisonSnapshot = viewModel.comparisonSnapshot(for: entry) {
                     if let changeSummary = entry.changeSummary {
                         DomainChangeSummaryView(summary: changeSummary)