Implement Round 2 language settings

Ariver

2026-06-03 9a85354d8b41e05ba8729cd8f44592291de9117a

 privatevoice.src/frontend/src/lib/stores/config.ts

@@ -6,3 +6,7 @@
export const startAtLogin = writable<boolean>(false);
export const hotkeyVK = writable<number>(0xa5);
export const hotkeyMode = writable<"tap" | "hold">("hold");
export const languageMode = writable<"auto" | "manual">("auto");
export const languageID = writable<"zh-CN" | "en">("zh-CN");
export const effectiveLanguageID = writable<"zh-CN" | "en">("zh-CN");
export const uiLocale = writable<"zh" | "en">("zh");