fix: hide top bar when choices panel is visible

src/App.vue

@@ -335,7 +335,7 @@ init()
         <Transition name="prompt-toast">
           <div v-if="showPromptToast" class="prompt-toast">{{ promptToast }}</div>
         </Transition>
-        <div v-if="started && !store.gameEnded" class="top-bar" :class="{ hidden: !showTopBar }">
+        <div v-if="started && !store.gameEnded && store.choices.length === 0" class="top-bar" :class="{ hidden: !showTopBar }">
           <button class="top-btn" @click="toggleFullscreen" :title="t('ui.fullscreen')">⛶</button>
           <button class="top-btn" @click="showPauseMenu = true" :title="t('ui.menu')">≡</button>
         </div>