fix(i18n): extract new Chinese keys and implement dynamic localization for footer/updates/tray menu

frontend/src/views/Home.vue

@@ -6,6 +6,7 @@ import HomeMetricsCard from "@/components/HomeMetricsCard.vue";
 import { useMessage } from "@/composables/useMessage";
 import { showModal } from "@/composables/useModal";
 import { getAdRuntime } from "@/services/clientApi";
+import { useLocale } from "@/i18n/runtime";
 import {
   appState,
   appViewState,
@@ -42,7 +43,12 @@ function asBoolean(value) {
   return value === true || value === "true" || value === 1 || value === "1";
 }
 
+const { locale } = useLocale();
+
 const homeAds = computed(() => {
+  if (locale.value !== "zh-CN") {
+    return [];
+  }
   const runtime = adRuntime.value && typeof adRuntime.value === "object" ? adRuntime.value : {};
   const slots = Array.isArray(runtime.slots) && runtime.slots.length > 0 ? runtime.slots : [runtime];
   return slots