Implement verified curriculum, video review, watch sessions, ledger safeguards, and remove demo data

apps/teacher_app/lib/data/models/teacher_models.dart

@@ -188,9 +188,9 @@ class TeacherProfileModel {
     required this.schoolName,
     required this.gradesTaught,
     required this.bio,
-    this.rating = 4.9,
-    this.studentsCount = 42,
-    this.lessonsCount = 28,
+    this.rating = 0,
+    this.studentsCount = 0,
+    this.lessonsCount = 0,
   });
 
   factory TeacherProfileModel.fromJson(Map<String, dynamic> json) {

apps/teacher_app/lib/logic/cubits/teacher_monetization_cubit.dart

@@ -28,6 +28,8 @@ class TeacherMonetizationState {
   final List<TeacherPayoutRequestModel> payoutRequests;
   final bool isSubmittingPayout;
   final bool isLoading;
+  final bool financialUnavailable;
+  final String financialMessage;
 
   const TeacherMonetizationState({
     required this.institutionalStudents,
@@ -44,6 +46,8 @@ class TeacherMonetizationState {
     required this.payoutRequests,
     required this.isSubmittingPayout,
     this.isLoading = false,
+    this.financialUnavailable = false,
+    this.financialMessage = '',
   });
 
   TeacherMonetizationState copyWith({
@@ -61,6 +65,8 @@ class TeacherMonetizationState {
     List<TeacherPayoutRequestModel>? payoutRequests,
     bool? isSubmittingPayout,
     bool? isLoading,
+    bool? financialUnavailable,
+    String? financialMessage,
   }) {
     return TeacherMonetizationState(
       institutionalStudents:
@@ -78,6 +84,8 @@ class TeacherMonetizationState {
       payoutRequests: payoutRequests ?? this.payoutRequests,
       isSubmittingPayout: isSubmittingPayout ?? this.isSubmittingPayout,
       isLoading: isLoading ?? this.isLoading,
+      financialUnavailable: financialUnavailable ?? this.financialUnavailable,
+      financialMessage: financialMessage ?? this.financialMessage,
     );
   }
 }
@@ -116,16 +124,21 @@ class TeacherMonetizationCubit extends Cubit<TeacherMonetizationState> {
       final mkt =
           audience['marketplace_students'] as Map<String, dynamic>? ?? {};
       final wallet = data['wallet'] as Map<String, dynamic>? ?? {};
+      final unavailable = data['financial_status'] == 'unavailable';
 
       final instCount = (inst['count'] as num?)?.toDouble() ?? 0.0;
       final paidCount = (mkt['count'] as num?)?.toDouble() ?? 0.0;
-      final gross =
-          (data['gross_revenue_jod'] as num?)?.toDouble() ?? (paidCount * 20.0);
-      final tShare = gross * 0.55;
-      final dShare = gross * 0.15;
-      final pShare = gross * 0.30;
+      final split = data['revenue_split'] as Map<String, dynamic>? ?? {};
+      // Never infer a wallet from subscriber counts, course prices, or old
+      // percentages. The backend returns null until a provider-backed ledger
+      // and eligible watch-minute policy are live.
+      final gross = (data['gross_revenue_jod'] as num?)?.toDouble() ?? 0.0;
+      final tShare = (split['teacher_amount_jod'] as num?)?.toDouble() ?? 0.0;
+      final dShare =
+          (split['directorate_amount_jod'] as num?)?.toDouble() ?? 0.0;
+      final pShare = (split['platform_amount_jod'] as num?)?.toDouble() ?? 0.0;
       final avail =
-          (wallet['available_balance_jod'] as num?)?.toDouble() ?? tShare;
+          (wallet['available_balance_jod'] as num?)?.toDouble() ?? 0.0;
       final withdrawn =
           (wallet['total_withdrawn_jod'] as num?)?.toDouble() ?? 0.0;
       final alias = wallet['cliq_payout_alias']?.toString() ?? '';
@@ -154,6 +167,8 @@ class TeacherMonetizationCubit extends Cubit<TeacherMonetizationState> {
         cliqAlias: alias,
         courses: courses,
         payoutRequests: payouts,
+        financialUnavailable: unavailable,
+        financialMessage: data['financial_message']?.toString() ?? '',
         isLoading: false,
       ));
     } catch (_) {
@@ -162,15 +177,8 @@ class TeacherMonetizationCubit extends Cubit<TeacherMonetizationState> {
   }
 
   void updateSubscribers(double subscribers) {
-    final gross = subscribers * state.pricePerCourse;
-    emit(state.copyWith(
-      studentSubscribers: subscribers,
-      grossRevenue: gross,
-      teacherShare: gross * 0.55,
-      directorateShare: gross * 0.15,
-      platformShare: gross * 0.30,
-      availableBalance: gross * 0.55,
-    ));
+    // Presentation must not fabricate revenue from a manually changed count.
+    emit(state.copyWith(studentSubscribers: subscribers));
   }
 
   Future<void> submitCliqPayout({
@@ -186,14 +194,8 @@ class TeacherMonetizationCubit extends Cubit<TeacherMonetizationState> {
       final updatedList =
           List<TeacherPayoutRequestModel>.from(state.payoutRequests)
             ..insert(0, req);
-      final newAvail =
-          (state.availableBalance - amountJod).clamp(0.0, double.infinity);
-      final newWithdrawn = state.totalWithdrawn + amountJod;
-
       emit(state.copyWith(
         payoutRequests: updatedList,
-        availableBalance: newAvail,
-        totalWithdrawn: newWithdrawn,
         isSubmittingPayout: false,
       ));
     } catch (_) {

apps/teacher_app/lib/presentation/screens/tabs/teacher_monetization_tab.dart

@@ -286,6 +286,40 @@ class _TeacherMonetizationTabState extends State<TeacherMonetizationTab> {
   Widget build(BuildContext context) {
     return BlocBuilder<TeacherMonetizationCubit, TeacherMonetizationState>(
       builder: (context, state) {
+        if (state.financialUnavailable) {
+          return Center(
+            child: Padding(
+              padding: const EdgeInsets.all(24),
+              child: Container(
+                padding: const EdgeInsets.all(20),
+                decoration: BoxDecoration(
+                  color: TeacherTheme.surfaceCard,
+                  borderRadius: BorderRadius.circular(18),
+                  border: Border.all(color: TeacherTheme.surfaceBorder),
+                ),
+                child: Column(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    const Icon(CupertinoIcons.lock_circle_fill,
+                        color: TeacherTheme.royalGold, size: 34),
+                    const SizedBox(height: 12),
+                    const Text('الأرباح والسحب غير متاحين حالياً',
+                        textAlign: TextAlign.center,
+                        style: TextStyle(
+                            color: Colors.white,
+                            fontSize: 16,
+                            fontWeight: FontWeight.w800)),
+                    const SizedBox(height: 8),
+                    Text(state.financialMessage,
+                        textAlign: TextAlign.center,
+                        style: const TextStyle(
+                            color: Color(0xFF94A3B8), fontSize: 13)),
+                  ],
+                ),
+              ),
+            ),
+          );
+        }
         return SingleChildScrollView(
           padding: const EdgeInsets.all(16),
           child: Column(