Remove E2EE and switch to plaintext messaging

🤖 Generated with [Claude Code](https://claude.com/claude-code)

apps/mobile/src/features/profile/ProfileScreen.tsx

@@ -20,7 +20,6 @@ import { useAuthStore, useSubscriptionStore } from '../../store';
 import { resetSwipeTutorial } from '../../lib/swipeTutorialSeen';
 import { resetMatchesTutorial } from '../../lib/matchesTutorialSeen';
 import { supabase } from '../../lib/supabase'; // Needed for debug reset
-import { clearKeys } from '../../lib/encryption';
 
 // Hooks
 import { useProfileSettings, useCoupleManagement } from './hooks';
@@ -294,29 +293,6 @@ export function ProfileScreen() {
                                 }
                             }}
                         />
-                        <View style={styles.preferencesDivider} />
-                        <MenuItem
-                            icon="key-outline"
-                            label="Clear Private Key"
-                            description="Remove E2EE keys from device"
-                            onPress={() => {
-                                Alert.alert(
-                                    "Clear Keys",
-                                    "Are you sure? You will lose access to encrypted messages until keys are regenerated.",
-                                    [
-                                        { text: "Cancel", style: "cancel" },
-                                        {
-                                            text: "Clear",
-                                            style: "destructive",
-                                            onPress: async () => {
-                                                await clearKeys();
-                                                Alert.alert("Success", "Keys cleared. They will be regenerated on next launch/login.");
-                                            }
-                                        }
-                                    ]
-                                );
-                            }}
-                        />
                     </SettingsSection>
                 )}
 

apps/mobile/src/features/profile/hooks/useCoupleManagement.ts

@@ -4,7 +4,6 @@ import { useRouter } from 'expo-router';
 import { useAuthStore, useMatchStore, useMessageStore, usePacksStore } from '../../../store';
 import { supabase } from '../../../lib/supabase';
 import { Events } from '../../../lib/analytics';
-import { clearKeys } from '../../../lib/encryption';
 
 export function useCoupleManagement() {
     const router = useRouter();
@@ -114,7 +113,6 @@ export function useCoupleManagement() {
             clearMatches();
             clearMessages();
             clearPacks();
-            await clearKeys();
 
             Events.accountDeleted();