feat(ecosystem): full Grade 10 curriculum sync, real device fingerprinting, teacher video dashboard, and official textbook assets

apps/student_app/lib/data/repositories/app_repositories.dart

@@ -1,5 +1,6 @@
 import '../../core/config/app_config.dart';
 import '../../core/network/api_client.dart';
+import '../../core/services/device_fingerprint_service.dart';
 import '../../core/services/storage_service.dart';
 import '../models/user_model.dart';
 import '../models/lesson_model.dart';
@@ -27,13 +28,14 @@ class AuthRepository {
   }
 
   Future<Map<String, dynamic>> verifyOtp(String phoneNumber, String otp, {String role = 'student'}) async {
+    final fingerprint = await DeviceFingerprintService.getFingerprint();
     final res = await _api.post(
       AppConfig.otpVerifyEndpoint,
       body: {
         'phone_number': phoneNumber,
         'otp': otp,
         'role': role,
-        'device_fingerprint': 'saqel_student_flutter',
+        'device_fingerprint': fingerprint,
       },
       requiresAuth: false,
     );
@@ -91,6 +93,7 @@ class AuthRepository {
     String gradeLevel = 'grade_10',
     String stream = 'scientific',
   }) async {
+    final fingerprint = await DeviceFingerprintService.getFingerprint();
     final res = await _api.post(
       AppConfig.studentProfileSetupEndpoint,
       body: {
@@ -99,6 +102,7 @@ class AuthRepository {
         'national_id': nationalId,
         'grade_level': gradeLevel,
         'stream': stream,
+        'device_fingerprint': fingerprint,
       },
       requiresAuth: false,
     );