Improve RDAP domain availability detection

Enhanced RDAP response handling to better detect domain availability by checking for 'free' and 'available' statuses in DebugController. WhoisService now normalizes 'free' status to 'AVAILABLE' for consistency in output.

app/Services/WhoisService.php

@@ -417,6 +417,14 @@ class WhoisService
         // Parse status
         if (isset($rdapData['status']) && is_array($rdapData['status'])) {
             $info['status'] = $rdapData['status'];
+            
+            // Convert "free" status to "AVAILABLE" for consistency
+            $info['status'] = array_map(function($status) {
+                if (stripos($status, 'free') !== false) {
+                    return 'AVAILABLE';
+                }
+                return $status;
+            }, $info['status']);
         }
         
         // Parse entities (registrar, abuse contact)