refactor: switch to key-based i18n for choices, revert inline textEn approach

src/components/ChoicePanel.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { ref, watch, nextTick, computed } from 'vue'
+import { ref, watch, nextTick } from 'vue'
 import type { Choice } from '@engine/types'
 import { useI18n } from '@/composables/useI18n'
 
@@ -13,12 +13,7 @@ const emit = defineEmits<{
   choose: [index: number]
 }>()
 
-const { t, currentLang } = useI18n()
-
-function choiceLabel(c: Choice): string {
-  if (currentLang.value === 'en' && (c as any).textEn) return (c as any).textEn
-  return c.text
-}
+const { t } = useI18n()
 const focusIndex = ref(0)
 const btnRefs = ref<(HTMLButtonElement | null)[]>([])
 
@@ -80,7 +75,7 @@ function onKeydown(e: KeyboardEvent, index: number) {
         @click="emit('choose', index)"
         @keydown="onKeydown($event, index)"
       >
-        {{ choiceLabel(choice) }}
+        {{ t(choice.textKey || choice.text) }}
       </button>
     </div>
   </div>