Fix Redis session mismatch in AuthMiddleware and ensure instant Onboarding UI transition

backend/app/Controllers/TeacherController.php

@@ -26,7 +26,12 @@ class TeacherController
 
         $profile = Database::selectOne("SELECT * FROM teacher_profiles WHERE user_id = ? LIMIT 1", [$userId]);
 
-        $decryptedName = Security::decrypt($user['full_name']);
+        $rawName = (string)($user['full_name'] ?? '');
+        $decryptedName = Security::decrypt($rawName) ?: $rawName;
+        if (empty($decryptedName)) {
+            $decryptedName = 'معلم جديد';
+        }
+        
         $isComplete = !empty($profile) && !empty($profile['specialization']) && $decryptedName !== 'معلم جديد';
 
         $response->json([

backend/app/Middlewares/AuthMiddleware.php

@@ -5,6 +5,7 @@ namespace App\Middlewares;
 use App\Core\Request;
 use App\Core\Response;
 use App\Core\Security;
+use App\Core\RedisClient;
 
 class AuthMiddleware
 {
@@ -16,7 +17,7 @@ class AuthMiddleware
         $authHeader = $request->getHeader('authorization', '');
 
         if (!$authHeader || !preg_match('/Bearer\s(\S+)/i', $authHeader, $matches)) {
-            $response->json(['error' => 'Unauthorized', 'message' => 'Token not provided or invalid format'], 401);
+            $response->status(401)->json(['error' => 'Unauthorized', 'message' => 'Token not provided or invalid format']);
             exit;
         }
 
@@ -24,33 +25,42 @@ class AuthMiddleware
         $payload = Security::verifyJWT($token);
 
         if (!$payload) {
-            $response->json(['error' => 'Unauthorized', 'message' => 'Invalid or expired token'], 401);
+            $response->status(401)->json(['error' => 'Unauthorized', 'message' => 'Invalid or expired token']);
             exit;
         }
 
-        // Check if session is active in Redis
-        try {
-            $redis = \App\Core\RedisClient::getInstance();
-            $userId = $payload['user_id'];
-            $sessionState = $redis->get("session:{$userId}:{$token}");
-            
-            if (!$sessionState || $sessionState !== 'active') {
-                $response->json(['error' => 'Unauthorized', 'message' => 'Session has been revoked or expired'], 401);
-                exit;
-            }
-        } catch (\Exception $e) {
-            // If Redis is down, we fallback to just JWT verification
-            error_log("AuthMiddleware Redis Error: " . $e->getMessage());
-        }
-
         // Validate required custom payload elements
         if (!isset($payload['user_id']) || !isset($payload['role'])) {
-            $response->json(['error' => 'Unauthorized', 'message' => 'Malformed token payload structure'], 401);
+            $response->status(401)->json(['error' => 'Unauthorized', 'message' => 'Malformed token payload structure']);
             exit;
         }
 
+        $userId = (int)$payload['user_id'];
+
+        // Check if session is active in Redis (Single Active Device / Session Tracking)
+        try {
+            $redis = RedisClient::getInstance();
+            $sessionData = $redis->get("active_session:{$userId}");
+            
+            if ($sessionData) {
+                $session = json_decode($sessionData, true);
+                $expectedSig = substr($token, -32);
+                if (is_array($session) && isset($session['token_signature']) && $session['token_signature'] !== $expectedSig) {
+                    $response->status(401)->json([
+                        'error'   => 'Unauthorized',
+                        'message' => 'تم تسجيل الدخول من جهاز أو متصفح آخر. يرجى إعادة تسجيل الدخول.'
+                    ]);
+                    exit;
+                }
+            }
+        } catch (\Exception $e) {
+            // If Redis is temporarily unreachable, fallback gracefully to JWT verification
+            error_log("AuthMiddleware Redis Warning: " . $e->getMessage());
+        }
+
         // Attach user info to the Request instance dynamically so controllers can use it
-        $request->user_id = $payload['user_id'];
+        $request->user_id = $userId;
         $request->role = $payload['role'];
+        $request->uuid = $payload['uuid'] ?? null;
     }
 }

backend/app/Views/TeacherPortal.php

@@ -955,7 +955,17 @@ class TeacherPortal
                 if (res.ok && data.status === 'success' && data.data?.token) {
                     const token = data.data.token;
                     localStorage.setItem('saqel_teacher_jwt', token);
-                    await checkTeacherSession(token);
+                    
+                    const user = data.data.user;
+                    // Immediate UI Transition
+                    if (user && user.name && user.name !== 'معلم جديد' && user.name !== 'مستخدم صَقِل') {
+                        renderDashboard(user);
+                    } else {
+                        switchToOnboardingStep(user?.name || '');
+                    }
+                    
+                    // Sync profile status in background
+                    checkTeacherSession(token);
                 } else {
                     showError(data.message || 'رمز التحقق غير صحيح');
                 }