新增打手端新订单语音播报开关

apps/frontend/src/utils/worker-speech.ts

@@ -0,0 +1,28 @@
+const WORKER_SPEECH_KEY = 'order-site-worker-new-order-speech'
+
+export function isWorkerSpeechEnabled() {
+  return window.localStorage.getItem(WORKER_SPEECH_KEY) === '1'
+}
+
+export function setWorkerSpeechEnabled(enabled: boolean) {
+  window.localStorage.setItem(WORKER_SPEECH_KEY, enabled ? '1' : '0')
+}
+
+/** 用浏览器语音合成播报一段中文；不支持或被浏览器拦截时静默失败。 */
+export function speakWorkerText(text: string) {
+  if (!('speechSynthesis' in window)) return
+  try {
+    window.speechSynthesis.cancel()
+    const utterance = new SpeechSynthesisUtterance(text)
+    utterance.lang = 'zh-CN'
+    utterance.rate = 1
+    utterance.volume = 1
+    const zhVoice = window.speechSynthesis
+      .getVoices()
+      .find((voice) => voice.lang.toLowerCase().startsWith('zh'))
+    if (zhVoice) utterance.voice = zhVoice
+    window.speechSynthesis.speak(utterance)
+  } catch {
+    // 部分浏览器禁用语音合成，不影响页面功能。
+  }
+}