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, 8 insertions, 0 deletions

diff --git a/DomainDig/DomainMonitoringService.swift b/DomainDig/DomainMonitoringService.swift
index 31b1505..3229fb7 100644
--- a/DomainDig/DomainMonitoringService.swift
+++ b/DomainDig/DomainMonitoringService.swift
@@ -910,6 +910,14 @@ final class DomainMonitoringService {
             ownershipError: previousSnapshot.ownershipError,
             ownershipHistory: previousSnapshot.ownershipHistory,
             ownershipHistoryError: previousSnapshot.ownershipHistoryError,
+            inferredProvider: previousSnapshot.inferredProvider,
+            priorProviders: previousSnapshot.priorProviders,
+            domainClassification: previousSnapshot.domainClassification,
+            ownershipTransitions: previousSnapshot.ownershipTransitions,
+            hostingTransitions: previousSnapshot.hostingTransitions,
+            subdomainHistory: previousSnapshot.subdomainHistory,
+            riskSignals: previousSnapshot.riskSignals,
+            intelligenceTimeline: previousSnapshot.intelligenceTimeline,
             ptrRecord: previousSnapshot.ptrRecord,
             ptrError: previousSnapshot.ptrError,
             redirectChain: previousSnapshot.redirectChain,