feat: 移除很多启动配置项，现在不需要了

src/pages/ChatMain/ChatInputArea/index.vue

@@ -97,7 +97,10 @@ const emit = defineEmits([
 
 const textareaRef = ref(null);
 const recordingWaveBtnRef = ref(null);
-const placeholder = computed(() => getCurrentConfig().placeholder);
+const placeholder = computed(() => {
+  const config = getCurrentConfig();
+  return `快告诉${config.name}您在想什么~`;
+});
 const inputMessage = ref(props.modelValue || "");
 const isFocused = ref(false);
 const keyboardHeight = ref(0);