i18n(monitor): add complete Slovak dashboard translation

Complete the Slovak Monitor dashboard catalog, mark Slovak as complete, and update the translation notes to reflect the finished AppImage UI coverage.

AppImage/lib/i18n/languages.ts

@@ -14,7 +14,7 @@ export interface SupportedLanguage {
 
 export const SUPPORTED_LANGUAGES: SupportedLanguage[] = [
   { code: "en", englishName: "English", nativeName: "English", status: "complete" },
-  { code: "sk", englishName: "Slovak", nativeName: "Slovenčina", status: "partial" },
+  { code: "sk", englishName: "Slovak", nativeName: "Slovenčina", status: "complete" },
   { code: "es", englishName: "Spanish", nativeName: "Español", status: "needs-translation" },
   { code: "fr", englishName: "French", nativeName: "Français", status: "needs-translation" },
   { code: "de", englishName: "German", nativeName: "Deutsch", status: "needs-translation" },

AppImage/messages/README.md

@@ -3,7 +3,7 @@
 The ProxMenux Monitor dashboard uses a small client-side i18n layer.
 
 - English (`en`) is the source language and the fallback.
-- Slovak (`sk`) is partially translated.
+- Slovak (`sk`) is complete.
 - Spanish, French, German, Italian and Portuguese are registered as
   community translation targets and currently fall back to English.