fix: Align exams creator_type enum to ai_adaptive and add fault-tolerant checkpoint generation

backend/app/Services/AiVideoAnalyzerService.php

@@ -48,6 +48,7 @@ class AiVideoAnalyzerService
         // 3. Save Socratic Checkpoints into exams, questions, question_options
         if (!empty($analysisResult['socratic_checkpoints'])) {
             foreach ($analysisResult['socratic_checkpoints'] as $cp) {
+                try {
                     $examUuid = sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
                         mt_rand(0, 0xffff), mt_rand(0, 0xffff),
                         mt_rand(0, 0xffff),
@@ -58,7 +59,7 @@ class AiVideoAnalyzerService
 
                     $examId = Database::insert(
                         "INSERT INTO exams (uuid, course_id, lesson_id, creator_type, scope, title, timestamp_seconds, rewind_on_fail_seconds, passing_percentage, total_points, is_mandatory, is_published)
-                     VALUES (?, ?, ?, 'system', 'in_video_checkpoint', ?, ?, ?, 100.00, 10, 1, 1)",
+                         VALUES (?, ?, ?, 'ai_adaptive', 'in_video_checkpoint', ?, ?, ?, 100.00, 10, 1, 1)",
                         [
                             $examUuid,
                             $courseId,
@@ -95,6 +96,9 @@ class AiVideoAnalyzerService
                             [$qId, $optText, ($idx === $correctIdx) ? 1 : 0]
                         );
                     }
+                } catch (\Throwable $e) {
+                    error_log("Checkpoint insert error: " . $e->getMessage());
+                }
             }
         }
 

backend/app/Views/TeacherPortal.php

@@ -1287,7 +1287,8 @@ class TeacherPortal
                         alert('❌ ' + (data.message || 'فشل رفع الفيديو'));
                     }
                 } catch (err) {
-                    alert('❌ خطأ في معالجة استجابة السيرفر');
+                    console.error('Response:', xhr.responseText);
+                    alert('❌ خطأ في معالجة استجابة السيرفر:\n' + (xhr.responseText ? xhr.responseText.substring(0, 250) : 'استجابة فارغة'));
                 }
             };