F1-F10: audit fixes (dimension normalize, passingScore scale, DB defaults, onDelete, item status filter, timeout event type, userId privacy) + generator.node.ts strict prompt rules (anti-hallucination)

server/src/assessment/entities/question-bank-item.entity.ts

@@ -56,6 +56,7 @@ export class QuestionBankItem {
   @Column({
     type: 'simple-enum',
     enum: QuestionType,
+    default: QuestionType.SHORT_ANSWER,
   })
   questionType: QuestionType;
 
@@ -71,12 +72,14 @@ export class QuestionBankItem {
   @Column({
     type: 'simple-enum',
     enum: QuestionDifficulty,
+    default: QuestionDifficulty.STANDARD,
   })
   difficulty: QuestionDifficulty;
 
   @Column({
     type: 'simple-enum',
     enum: QuestionDimension,
+    default: QuestionDimension.PROMPT,
   })
   dimension: QuestionDimension;
 
@@ -89,6 +92,7 @@ export class QuestionBankItem {
   @Column({
     type: 'simple-enum',
     enum: QuestionBankItemStatus,
+    default: QuestionBankItemStatus.PENDING_REVIEW,
   })
   status: QuestionBankItemStatus;