DomainDig v3.5.0: Expand the Pro+ Data+ intelligence layer with deeper local historical context

and inferred enrichment.

- add derived intelligence fields for provider fingerprinting, classification,
  ownership transitions, hosting transitions, subdomain history, risk signals,
  and inferred timeline events
- expand DNS history beyond A/NS snapshots to retain A, AAAA, MX, NS, TXT, and
  CNAME change state
- persist enriched intelligence in snapshots and history entries so analysis is
  local-first and incremental
- add a dedicated Data+ Intelligence panel to current and historical domain
  detail views
- surface intelligence events in timeline rows and include Data+ changes in diff
  output
- preserve non-blocking inspection behavior by keeping enrichment additive to
  the main lookup path

This makes Pro+ materially deeper for investigative workflows by improving
historical ownership visibility, infrastructure context, hosting change
detection, subdomain intelligence, and explainable risk signals.

1 files changed, 16 insertions, 0 deletions

diff --git a/LookupSnapshot.swift b/LookupSnapshot.swift
index 752e7f2..f9400f5 100644
--- a/LookupSnapshot.swift
+++ b/LookupSnapshot.swift
@@ -48,6 +48,14 @@ struct LookupSnapshot {
     let ownershipError: String?
     let ownershipHistory: [DomainOwnershipHistoryEvent]
     let ownershipHistoryError: String?
+    let inferredProvider: InferredProviderFingerprint?
+    let priorProviders: [String]
+    let domainClassification: DomainClassificationSummary?
+    let ownershipTransitions: [OwnershipTransitionEvent]
+    let hostingTransitions: [HostingTransitionEvent]
+    let subdomainHistory: [SubdomainHistoryEntry]
+    let riskSignals: [IntelligenceRiskSignal]
+    let intelligenceTimeline: [IntelligenceTimelineEvent]
     let ptrRecord: String?
     let ptrError: String?
     let redirectChain: [RedirectHop]
@@ -122,6 +130,14 @@ extension HistoryEntry {
             ownershipError: ownershipError,
             ownershipHistory: ownershipHistory,
             ownershipHistoryError: ownershipHistoryError,
+            inferredProvider: inferredProvider,
+            priorProviders: priorProviders,
+            domainClassification: domainClassification,
+            ownershipTransitions: ownershipTransitions,
+            hostingTransitions: hostingTransitions,
+            subdomainHistory: subdomainHistory,
+            riskSignals: riskSignals,
+            intelligenceTimeline: intelligenceTimeline,
             ptrRecord: ptrRecord,
             ptrError: ptrError,
             redirectChain: redirectChain,