feat(v1.8): improve result structure, history, and consistency

- normalize sections and add summary card
- fix resolver usage in reverse DNS
- include custom port scans in history/export
- standardize error handling
- decompose ContentView into smaller views

1 files changed, 3 insertions, 2 deletions

diff --git a/DomainDig/ReachabilityService.swift b/DomainDig/ReachabilityService.swift
index 0bb30ae..3fb7dd9 100644
--- a/DomainDig/ReachabilityService.swift
+++ b/DomainDig/ReachabilityService.swift
@@ -29,10 +29,11 @@ struct ReachabilityService {
         }
     }
 
-    static func checkAll(domain: String) async -> [PortReachability] {
+    static func checkAll(domain: String) async -> ServiceResult<[PortReachability]> {
         async let port443 = check(domain: domain, port: 443)
         async let port80 = check(domain: domain, port: 80)
-        return await [port443, port80]
+        let results = await [port443, port80]
+        return results.isEmpty ? .empty("No reachability results") : .success(results)
     }
 }