i18n 代码进入URL路由，优化重定向规则

src/components/layout/locale-context.tsx

@@ -0,0 +1,11 @@
+"use client";
+
+import { createContext, useContext } from "react";
+import type { Locale } from "@/lib/i18n";
+
+export const LocaleContext = createContext<Locale>("zh-Hans");
+export function useRouteLocale() { return useContext(LocaleContext); }
+
+export function LocaleProvider({ locale, children }: { locale: Locale; children: React.ReactNode }) {
+  return <LocaleContext.Provider value={locale}>{children}</LocaleContext.Provider>;
+}