sync-docs-and-fixes

src/modules/exams/components/assembly/exam-paper-preview.tsx

@@ -25,6 +25,20 @@ export function ExamPaperPreview({ title, subject, grade, durationMin, totalScor
   // Helper to flatten questions for continuous numbering
   let questionCounter = 0
 
+  const parseContent = (raw: unknown): QuestionContent => {
+    if (raw && typeof raw === "object") return raw as QuestionContent
+    if (typeof raw === "string") {
+      try {
+        const parsed = JSON.parse(raw) as unknown
+        if (parsed && typeof parsed === "object") return parsed as QuestionContent
+        return { text: raw }
+      } catch {
+        return { text: raw }
+      }
+    }
+    return {}
+  }
+
   const renderNode = (node: ExamNode, depth: number = 0) => {
     if (node.type === 'group') {
       return (
@@ -45,7 +59,7 @@ export function ExamPaperPreview({ title, subject, grade, durationMin, totalScor
     if (node.type === 'question' && node.question) {
       questionCounter++
       const q = node.question
-      const content = q.content as QuestionContent
+      const content = parseContent(q.content)
       
       return (
         <div key={node.id} className="mb-6 break-inside-avoid">