Add copyright notice and link to ProfileScreen, including styling for copyright text and link.

src/screens/Main/ProfileScreen.js

@@ -9,6 +9,7 @@ import {
   Alert,
   ActivityIndicator,
   RefreshControl,
+  Linking,
 } from 'react-native';
 import { StatusBar } from 'expo-status-bar';
 import { Ionicons } from '@expo/vector-icons';
@@ -362,6 +363,21 @@ const ProfileScreen = () => {
         </View>
         
         <View style={styles.bottomSpacing} />
+        
+        {/* Copyright */}
+        <Text style={styles.copyrightText}>
+          Copyright{' '}
+          <Text
+            style={styles.link}
+            onPress={() => Linking.openURL('https://webulgam.com')}
+          >
+            Webulgam IT Company
+          </Text>{' '}
+          © {new Date().getFullYear()}.
+        </Text>
+        <Text style={styles.copyrightText}>
+          Ähli hukular goralan.
+        </Text>
       </ScrollView>
 
       {/* Edit Profile Modal */}
@@ -526,6 +542,14 @@ const styles = StyleSheet.create({
   bottomSpacing: {
     height: 24,
   },
+  copyrightText: {
+    fontSize: 12,
+    color: COLORS.textSecondary,
+    textAlign: 'center',
+  },
+  link: {
+    color: COLORS.primary,
+  },
 });
 
 export default ProfileScreen;