Fix some UI issues

frontend/src/components/ui/LanguageSelector.tsx

@@ -21,8 +21,8 @@ export function LanguageSelector({
   const languageOptions = supportedLanguages.map(lang => ({
     value: lang,
     label: variant === 'compact'
-      ? `${languageConfig[lang].flag} ${languageConfig[lang].code.toUpperCase()}`
-      : `${languageConfig[lang].flag} ${languageConfig[lang].nativeName}`,
+      ? languageConfig[lang].code.toUpperCase()
+      : languageConfig[lang].nativeName,
   }));
 
   const handleLanguageChange = (value: string | number | Array<string | number>) => {

frontend/src/locales/index.ts

@@ -93,21 +93,21 @@ export const languageConfig = {
     name: 'Español',
     nativeName: 'Español',
     code: 'es',
-    flag: '🇪🇸',
+    flag: 'es', // Using language code instead of flag for proper language identification
     rtl: false,
   },
   en: {
     name: 'English',
     nativeName: 'English',
     code: 'en',
-    flag: '🇺🇸',
+    flag: 'en', // Using language code instead of flag for proper language identification
     rtl: false,
   },
   eu: {
-    name: 'Euskera',
+    name: 'Basque',
     nativeName: 'Euskera',
     code: 'eu',
-    flag: '🏴󠁥󠁳󠁰󠁶󠁿',
+    flag: 'eu', // Using language code instead of flag for proper language identification
     rtl: false,
   },
 };

frontend/src/stores/ui.store.ts

@@ -107,7 +107,7 @@ export const useUIStore = create<UIState>()(
   persist(
     (set, get) => ({
       // Initial state
-      theme: 'light',
+      theme: 'dark',
       language: 'es',
       sidebarState: 'expanded',
       compactMode: false,
@@ -375,13 +375,13 @@ if (typeof window !== 'undefined') {
   if (storedState) {
     try {
       const { state } = JSON.parse(storedState);
-      useUIStore.getState().setTheme(state.theme || 'auto');
+      useUIStore.getState().setTheme(state.theme || 'dark');
     } catch (error) {
       console.warn('Failed to parse stored UI state:', error);
-      useUIStore.getState().setTheme('auto');
+      useUIStore.getState().setTheme('dark');
     }
   } else {
-    useUIStore.getState().setTheme('auto');
+    useUIStore.getState().setTheme('dark');
   }
 
   // Listen for system theme changes