Enhance transformation exercise formatting and improve choice option generation in VocabLessonView

- Added formatting for transformation exercises to display prompts as "Übersetze 'X' ins Bisaya", improving clarity for users.
- Updated the buildChoiceOptions method to exclude the prompt from the choice options, ensuring a more relevant selection for multiple choice questions.
- Enhanced console logging to provide better insights into the prompt and answer during choice option creation, aiding in debugging and user feedback.

backend/scripts/delete-all-family-words-exercises.js

@@ -0,0 +1,88 @@
+#!/usr/bin/env node
+/**
+ * Script zum Löschen ALLER "Familienwörter"-Übungen aus Bisaya-Kursen
+ * 
+ * Verwendung:
+ * node backend/scripts/delete-all-family-words-exercises.js
+ * 
+ * Löscht alle Grammatik-Übungen von "Familienwörter"-Lektionen, um Platz für neue zu schaffen.
+ */
+
+import { sequelize } from '../utils/sequelize.js';
+import VocabCourseLesson from '../models/community/vocab_course_lesson.js';
+import VocabGrammarExercise from '../models/community/vocab_grammar_exercise.js';
+
+async function deleteAllFamilyWordsExercises() {
+  await sequelize.authenticate();
+  console.log('Datenbankverbindung erfolgreich hergestellt.\n');
+
+  // Finde alle Bisaya-Kurse
+  const [bisayaLanguage] = await sequelize.query(
+    `SELECT id FROM community.vocab_language WHERE name = 'Bisaya' LIMIT 1`,
+    {
+      type: sequelize.QueryTypes.SELECT
+    }
+  );
+
+  if (!bisayaLanguage) {
+    console.error('❌ Bisaya-Sprache nicht gefunden.');
+    return;
+  }
+
+  const courses = await sequelize.query(
+    `SELECT id, title FROM community.vocab_course WHERE language_id = :languageId`,
+    {
+      replacements: { languageId: bisayaLanguage.id },
+      type: sequelize.QueryTypes.SELECT
+    }
+  );
+
+  console.log(`Gefunden: ${courses.length} Bisaya-Kurse\n`);
+
+  let totalDeleted = 0;
+  let totalLessons = 0;
+
+  for (const course of courses) {
+    console.log(`📚 Kurs: ${course.title} (ID: ${course.id})`);
+    
+    // Finde "Familienwörter"-Lektionen
+    const lessons = await VocabCourseLesson.findAll({
+      where: { 
+        courseId: course.id,
+        title: 'Familienwörter'
+      },
+      order: [['lessonNumber', 'ASC']]
+    });
+
+    console.log(`   ${lessons.length} "Familienwörter"-Lektionen gefunden`);
+
+    for (const lesson of lessons) {
+      // Lösche ALLE bestehenden Übungen
+      const deletedCount = await VocabGrammarExercise.destroy({
+        where: { lessonId: lesson.id }
+      });
+
+      console.log(`   🗑️  Lektion ${lesson.lessonNumber}: "${lesson.title}" - ${deletedCount} Übung(en) gelöscht`);
+      totalDeleted += deletedCount;
+      totalLessons++;
+    }
+    
+    console.log('');
+  }
+
+  console.log(`\n🎉 Zusammenfassung:`);
+  console.log(`   ${totalLessons} Lektionen bearbeitet`);
+  console.log(`   ${totalDeleted} Übungen gelöscht`);
+  console.log(`\n💡 Hinweis: Führe jetzt das update-family-words-exercises.js Script aus, um neue Übungen zu erstellen.`);
+}
+
+deleteAllFamilyWordsExercises()
+  .then(() => {
+    sequelize.close();
+    process.exit(0);
+  })
+  .catch((error) => {
+    console.error('❌ Fehler:', error);
+    sequelize.close();
+    process.exit(1);
+  });