feat(question-bank): extend source options to include 'rag-ai' for AI-generated questions

services/cms-service/src/handlers_question_bank.rs

@@ -456,7 +456,7 @@ pub async fn list_questions(
             "ai" => {
                 sqlx::query_as::<_, QuestionBank>(
                     &format!(
-                        "SELECT {} FROM question_bank WHERE organization_id = $1 AND is_archived = false AND source = 'ai-generated' ORDER BY created_at DESC",
+                        "SELECT {} FROM question_bank WHERE organization_id = $1 AND is_archived = false AND source IN ('ai-generated', 'rag-ai') ORDER BY created_at DESC",
                         QUESTION_BANK_SELECT_COLUMNS
                     )
                 )

web/studio/src/app/question-bank/page.tsx

@@ -12,7 +12,7 @@ import MySQLImportModal from '@/components/QuestionBank/MySQLImportModal';
 
 const isMySqlOrigin = (source?: string) => source === 'imported-mysql' || source === 'sam-diagnostico';
 const isMaterialsOrigin = (source?: string) => source === 'imported-material';
-const isAiOrigin = (source?: string) => source === 'ai-generated';
+const isAiOrigin = (source?: string) => source === 'ai-generated' || source === 'rag-ai';
 
 const toSafeText = (value: unknown): string => {
     if (value === null || value === undefined) return '';

web/studio/src/components/QuestionBank/QuestionBankCard.tsx

@@ -82,6 +82,7 @@ export default function QuestionBankCard({ question, onEdit, onDelete }: Questio
                     </span>
                 );
             case 'ai-generated':
+            case 'rag-ai':
                 return (
                     <span className="flex items-center gap-1 text-xs text-purple-600 dark:text-purple-400">
                         <Sparkles className="w-3 h-3" /> IA

web/studio/src/lib/api.ts

@@ -1272,7 +1272,7 @@ export interface QuestionBank {
     difficulty?: 'easy' | 'medium' | 'hard';
     tags?: string[];
     skill_assessed?: 'reading' | 'listening' | 'speaking' | 'writing';
-    source?: 'manual' | 'ai-generated' | 'imported-mysql' | 'imported-csv';
+    source?: 'manual' | 'ai-generated' | 'rag-ai' | 'imported-mysql' | 'imported-material' | 'imported-csv' | 'sam-diagnostico';
     source_metadata?: unknown;
     usage_count?: number;
     last_used_at?: string;