Add domain field to shortlink API responses and sync script

app/api/shortlinks/exact/route.ts

@@ -43,7 +43,8 @@ export async function GET(request: NextRequest) {
         favorites,
         expires_at,
         click_count,
-        unique_visitors
+        unique_visitors,
+        domain
       FROM shorturl_analytics.shorturl
       WHERE JSONHas(attributes, 'shortUrl') 
         AND JSONExtractString(attributes, 'shortUrl') = '${shortUrl}'
@@ -120,7 +121,7 @@ export async function GET(request: NextRequest) {
       projects: projects,
       tags: tags.map((tag: any) => tag.tag_name || ''),
       createdAt: shortlink.created_at,
-      domain: new URL(shortUrlValue || 'https://example.com').hostname
+      domain: shortlink.domain || (shortUrlValue ? new URL(shortUrlValue).hostname : '')
     };
     
     console.log('Formatted shortlink with externalId:', shortlink.external_id);