feat(i18n): add language switcher

src/i18n/dictionaries/en.ts

@@ -1,4 +1,13 @@
 export const en = {
+  common: {
+    languageSwitcher: {
+      label: "Language",
+      options: {
+        en: "English",
+        es: "Spanish",
+      },
+    },
+  },
   login: {
     title: "Sign In",
     usernameLabel: "Username",

src/i18n/dictionaries/es.ts

@@ -1,6 +1,15 @@
 import type { Dictionary } from "./en"
 
 export const es = {
+  common: {
+    languageSwitcher: {
+      label: "Idioma",
+      options: {
+        en: "Inglés",
+        es: "Español",
+      },
+    },
+  },
   login: {
     title: "Iniciar sesión",
     usernameLabel: "Usuario",

src/i18n/locales.ts

@@ -5,6 +5,7 @@ export type Locale = (typeof SUPPORTED_LOCALES)[number]
 export const FALLBACK_LOCALE: Locale = "en"
 export const DEFAULT_LOCALE_ENV_VAR = "STOCK_MANAGER_DEFAULT_LOCALE"
 export const LOCALE_COOKIE_NAME = "stock-manager-locale"
+export const LOCALE_COOKIE_MAX_AGE_SECONDS = 60 * 60 * 24 * 365
 
 export function isLocale(value: unknown): value is Locale {
   return (