feat(v3.0.0): unify platform architecture and introduce feature tiers

* consolidate DomainReport as canonical data model
* add feature tier system (free/pro/data+ scaffolding)
* apply clean feature gating across workflows and tracking
* refactor app structure for maintainability
* standardize navigation and settings
* add data lifecycle controls
* ensure consistency across UI, export, and CLI
* stabilize internal inspection API

1 files changed, 10 insertions, 1 deletions

diff --git a/DomainDig/DataAccessService.swift b/DomainDig/DataAccessService.swift
index fed4fde..d0254ac 100644
--- a/DomainDig/DataAccessService.swift
+++ b/DomainDig/DataAccessService.swift
@@ -2,6 +2,15 @@ import Foundation
 
 enum DataAccessService {
     static func hasAccess(to capability: DataCapability) -> Bool {
-        false
+        switch capability {
+        case .ownershipHistory:
+            return FeatureAccessService.hasAccess(to: .ownershipHistory)
+        case .dnsHistory:
+            return FeatureAccessService.hasAccess(to: .dnsHistory)
+        case .extendedSubdomains:
+            return FeatureAccessService.hasAccess(to: .extendedSubdomains)
+        case .domainPricing:
+            return false
+        }
     }
 }