refactor(mobile): Remove i18n, expand core screens, update plan

BREAKING: Removed multi-language support (i18n) - will be re-added later

Changes:
- Removed i18n system (6 language files, LanguageContext)
- Expanded WalletScreen, SettingsScreen, SwapScreen with more features
- Added KurdistanSun component, HEZ/PEZ token icons
- Added EditProfileScreen, WalletSetupScreen
- Added button e2e tests (Profile, Settings, Wallet)
- Updated plan: honest assessment - 42 nav buttons with mock data
- Fixed terminology: Polkadot→Pezkuwi, Substrate→Bizinikiwi

Reality check: UI complete with mock data, converting to production one-by-one

mobile/App.tsx

@@ -1,70 +1,25 @@
-import React, { useEffect, useState } from 'react';
-import { View, ActivityIndicator, StyleSheet } from 'react-native';
+import React from 'react';
 import { StatusBar } from 'expo-status-bar';
-import { initializeI18n } from './src/i18n';
 import { ErrorBoundary } from './src/components/ErrorBoundary';
-import { LanguageProvider } from './src/contexts/LanguageContext';
 import { AuthProvider } from './src/contexts/AuthContext';
 import { PezkuwiProvider } from './src/contexts/PezkuwiContext';
 import { BiometricAuthProvider } from './src/contexts/BiometricAuthContext';
 import { ThemeProvider } from './src/contexts/ThemeContext';
 import AppNavigator from './src/navigation/AppNavigator';
-import { KurdistanColors } from './src/theme/colors';
 
 export default function App() {
-  const [isI18nInitialized, setIsI18nInitialized] = useState(false);
-
-  useEffect(() => {
-    // Initialize i18n on app start
-    const initApp = async () => {
-      try {
-        console.log('🚀 App starting...');
-        console.log('🔧 Initializing i18n...');
-        await initializeI18n();
-        console.log('✅ i18n initialized');
-        setIsI18nInitialized(true);
-      } catch (error) {
-        console.error('❌ Failed to initialize i18n:', error);
-        // Fallback: Still show app but with default language
-        setIsI18nInitialized(true);
-      }
-    };
-
-    initApp();
-  }, []);
-
-  if (!isI18nInitialized) {
-    return (
-      <View style={styles.loadingContainer}>
-        <ActivityIndicator size="large" color={KurdistanColors.kesk} />
-      </View>
-    );
-  }
-
   return (
     <ErrorBoundary>
       <ThemeProvider>
         <AuthProvider>
           <PezkuwiProvider>
-            <LanguageProvider>
-              <BiometricAuthProvider>
-                <StatusBar style="auto" />
-                <AppNavigator />
-              </BiometricAuthProvider>
-            </LanguageProvider>
+            <BiometricAuthProvider>
+              <StatusBar style="auto" />
+              <AppNavigator />
+            </BiometricAuthProvider>
           </PezkuwiProvider>
         </AuthProvider>
       </ThemeProvider>
     </ErrorBoundary>
   );
 }
-
-const styles = StyleSheet.create({
-  loadingContainer: {
-    flex: 1,
-    justifyContent: 'center',
-    alignItems: 'center',
-    backgroundColor: KurdistanColors.spi,
-  },
-});
-