feat(bisaya): update gap fill exercise instruction to clarify first person usage

backend/migrations-active/20260907000000-clarify-bisaya-adto-first-person-gap.cjs

@@ -0,0 +1,21 @@
+'use strict';
+
+/** The expected answers include "ko", so the prompt must name first person. */
+module.exports = {
+  async up(queryInterface) {
+    await queryInterface.sequelize.query(`
+      UPDATE community.vocab_grammar_exercise AS exercise
+      SET instruction = 'Bilde „ich gehe“ mit „adto“ in Vergangenheit, Gegenwart und Zukunft. Verwende in jeder Form „ko“.'
+      FROM community.vocab_course_lesson AS lesson
+      WHERE exercise.lesson_id = lesson.id
+        AND lesson.lesson_number = 15
+        AND lesson.title = 'Zeitformen - Grundlagen'
+        AND exercise.exercise_number = 5
+        AND exercise.title = 'Zeitmuster anwenden';
+    `);
+  },
+
+  async down() {
+    // The old instruction omitted the required person marker.
+  }
+};

backend/scripts/create-bisaya-course-content.js

@@ -2710,7 +2710,7 @@ const BISAYA_EXERCISES = {
     },
     withTypeName('gap_fill', {
       title: 'Zeitmuster anwenden',
-      instruction: 'Verwende das Verb "adto" in Vergangenheit, Gegenwart und Zukunft. Trage jede Form in das passende Feld ein.',
+      instruction: 'Bilde „ich gehe“ mit „adto“ in Vergangenheit, Gegenwart und Zukunft. Verwende in jeder Form „ko“.',
       questionData: {
         type: 'gap_fill',
         text: 'Vergangenheit: {gap} | Gegenwart: {gap} | Zukunft: {gap}',