fix: broaden session token extraction to handle various North API response formats

app/Http/Controllers/NorthCheckoutController.php

@@ -62,11 +62,18 @@ class NorthCheckoutController extends Controller
         }
 
         $data = $response->json();
-        $token = $data['token'] ?? $data['sessionToken'] ?? null;
+        $token = $data['token'] ?? 
+                 $data['sessionToken'] ?? 
+                 $data['id'] ?? 
+                 $data['session_id'] ?? 
+                 ($data['session']['id'] ?? null);
 
         if (!$token) {
             Log::error('North Session Token Missing in Response: ' . json_encode($data));
-            return response()->json(['error' => 'Session token not found in API response.'], 500);
+            return response()->json([
+                'error' => 'Session token not found in API response.',
+                'debug_response' => $data
+            ], 500);
         }
 
         return response()->json(['sessionToken' => $token]);