feat(i18n): register ja, ro, uk, gl in language switcher

These four locales had translation files but were never wired into i18n
resources or the nezhaLang dropdown, so users could not select them.
Register ja-JP, ro-RO, uk-UA, gl-ES; missing keys fall back to en-US per
the Weblate community-translation workflow.

src/lib/i18n.ts

@@ -5,10 +5,14 @@ import deTranslation from "../locales/de/translation.json"
 import enTranslation from "../locales/en/translation.json"
 import esTranslation from "../locales/es/translation.json"
 import frTranslation from "../locales/fr/translation.json"
+import glTranslation from "../locales/gl/translation.json"
 import idTranslation from "../locales/id/translation.json"
 import itTranslation from "../locales/it/translation.json"
+import jaTranslation from "../locales/ja/translation.json"
+import roTranslation from "../locales/ro/translation.json"
 import ruTranslation from "../locales/ru/translation.json"
 import taTranslation from "../locales/ta/translation.json"
+import ukTranslation from "../locales/uk/translation.json"
 import zhCNTranslation from "../locales/zh-CN/translation.json"
 import zhTWTranslation from "../locales/zh-TW/translation.json"
 
@@ -43,6 +47,18 @@ const resources = {
     "id-ID": {
         translation: idTranslation,
     },
+    "ja-JP": {
+        translation: jaTranslation,
+    },
+    "ro-RO": {
+        translation: roTranslation,
+    },
+    "uk-UA": {
+        translation: ukTranslation,
+    },
+    "gl-ES": {
+        translation: glTranslation,
+    },
 }
 
 const getStoredLanguage = () => {

src/types/settings.ts

@@ -16,6 +16,10 @@ export const nezhaLang: Record<string, string> = {
     "it-IT": "Italiano",
     "fr-FR": "Français",
     "id-ID": "Bahasa Indonesia",
+    "ja-JP": "日本語",
+    "ro-RO": "Română",
+    "uk-UA": "Українська",
+    "gl-ES": "Galego",
 }
 
 export const wafBlockReasons: Record<number, string> = {