feat(v3.2.0): add Data+ tier and external data integrations

- introduce Data+ tier for advanced data features
- add ownership history and DNS history
- expand subdomain discovery with external sources
- add domain pricing insights
- implement local usage/credit system
- integrate external data service layer with rate limiting
- extend export and CLI for Data+ features

1 files changed, 1 insertions, 1 deletions

diff --git a/DomainDig/SubdomainDiscoveryService.swift b/DomainDig/SubdomainDiscoveryService.swift
index 4e25cf0..7339648 100644
--- a/DomainDig/SubdomainDiscoveryService.swift
+++ b/DomainDig/SubdomainDiscoveryService.swift
@@ -59,7 +59,7 @@ enum SubdomainDiscoveryService {
                 guard seen.insert(sanitized).inserted else {
                     continue
                 }
-                results.append(DiscoveredSubdomain(hostname: sanitized))
+                results.append(DiscoveredSubdomain(hostname: sanitized, source: "crt.sh"))
                 if results.count == limit {
                     return results
                 }