Estado base antes de integración Cognito.

Incluye admin web Spring Boot, API JWT para escáner y app Flutter qrscanner con login y escaneo de pases.

flutter-app/qrscanner/lib/services/pass_code_service.dart

@@ -0,0 +1,27 @@
+import 'dart:convert';
+
+import 'package:http/http.dart' as http;
+import 'package:qrscanner/config/api_config.dart';
+import 'package:qrscanner/models/auth_session.dart';
+import 'package:qrscanner/models/scan_response.dart';
+
+class PassCodeService {
+  Future<ScanResponse> scan({
+    required AuthSession session,
+    required String code,
+  }) async {
+    final response = await http.post(
+      Uri.parse(ApiConfig.scanUrl),
+      headers: {
+        'Content-Type': 'application/json',
+        'Authorization': session.authorizationHeader,
+      },
+      body: jsonEncode({'code': code}),
+    );
+
+    final Map<String, dynamic> body =
+        jsonDecode(response.body) as Map<String, dynamic>;
+
+    return ScanResponse.fromJson(body);
+  }
+}