Merge branch 'Steven'

2026-01-31 21:21:55 -08:00
parent 22dc3abf65 d64a6557a8
commit 240a7eea8b
7 changed files with 1023 additions and 645 deletions
--- a/App.tsx
+++ b/App.tsx
@@ -6,6 +6,7 @@
 */

 import React from 'react';
+import { Buffer } from 'buffer';
 import { StatusBar } from 'expo-status-bar';
 import { NavigationContainer } from '@react-navigation/native';
 import { GestureHandlerRootView } from 'react-native-gesture-handler';
@@ -15,6 +16,10 @@ import AuthNavigator from './src/navigation/AuthNavigator';
 import { AuthProvider, useAuth } from './src/context/AuthContext';
 import { colors } from './src/theme/colors';

+if (typeof globalThis !== 'undefined' && !globalThis.Buffer) {
+  globalThis.Buffer = Buffer;
+}
+
 /**
 * Loading screen shown while restoring auth state
 */
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,6 +14,8 @@
        "@react-navigation/bottom-tabs": "^6.6.1",
        "@react-navigation/native": "^6.1.18",
        "@react-navigation/native-stack": "^6.11.0",
+        "bip39": "^3.1.0",
+        "buffer": "^6.0.3",
        "expo": "~52.0.0",
        "expo-asset": "~11.0.5",
        "expo-constants": "~17.0.8",
@@ -3209,6 +3211,18 @@
        "@jridgewell/sourcemap-codec": "^1.4.14"
      }
    },
+    "node_modules/@noble/hashes": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.8.0.tgz",
+      "integrity": "sha512-jCs9ldd7NwzpgXDIf6P3+NrHh9/sD6CQdxHyjQI+h/6rDNo88ypBxxz45UDuZHz9r3tNz7N/VInSVoVdtXEI4A==",
+      "license": "MIT",
+      "engines": {
+        "node": "^14.21.3 || >=16"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
    "node_modules/@nodelib/fs.scandir": {
      "version": "2.1.5",
      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
@@ -4447,6 +4461,15 @@
        "node": ">=0.6"
      }
    },
+    "node_modules/bip39": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/bip39/-/bip39-3.1.0.tgz",
+      "integrity": "sha512-c9kiwdk45Do5GL0vJMe7tS95VjCii65mYAH7DfWl3uW8AVzXKQVUm64i3hzVybBDMp9r7j9iNxR85+ul8MdN/A==",
+      "license": "ISC",
+      "dependencies": {
+        "@noble/hashes": "^1.2.0"
+      }
+    },
    "node_modules/bplist-creator": {
      "version": "0.0.7",
      "resolved": "https://registry.npmjs.org/bplist-creator/-/bplist-creator-0.0.7.tgz",
@@ -4533,9 +4556,9 @@
      }
    },
    "node_modules/buffer": {
-      "version": "5.7.1",
-      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
-      "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
+      "version": "6.0.3",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-6.0.3.tgz",
+      "integrity": "sha512-FTiCpNxtwiZZHEZbcbTIcZjERVICn9yq/pDFkTl95/AxzD1naBctN7YO68riM/gLSDY7sdrMby8hofADYuuqOA==",
      "funding": [
        {
          "type": "github",
@@ -4553,7 +4576,7 @@
      "license": "MIT",
      "dependencies": {
        "base64-js": "^1.3.1",
-        "ieee754": "^1.1.13"
+        "ieee754": "^1.2.1"
      }
    },
    "node_modules/buffer-alloc": {
@@ -11057,6 +11080,30 @@
        "node": ">=10"
      }
    },
+    "node_modules/whatwg-url-without-unicode/node_modules/buffer": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
+      "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "base64-js": "^1.3.1",
+        "ieee754": "^1.1.13"
+      }
+    },
    "node_modules/whatwg-url-without-unicode/node_modules/webidl-conversions": {
      "version": "5.0.0",
      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-5.0.0.tgz",
--- a/package.json
+++ b/package.json
@@ -15,6 +15,8 @@
    "@react-navigation/bottom-tabs": "^6.6.1",
    "@react-navigation/native": "^6.1.18",
    "@react-navigation/native-stack": "^6.11.0",
+    "bip39": "^3.1.0",
+    "buffer": "^6.0.3",
    "expo": "~52.0.0",
    "expo-asset": "~11.0.5",
    "expo-constants": "~17.0.8",
--- a/src/config/index.ts
+++ b/src/config/index.ts
@@ -112,6 +112,7 @@ export const MOCK_CONFIG = {
  USER: {
    id: 999,
    username: 'MockCaptain',
+    email: 'captain@sentinel.local',
    public_key: 'mock_public_key',
    is_admin: true,
    guale: false,
--- a/src/screens/SentinelScreen.tsx
+++ b/src/screens/SentinelScreen.tsx
@@ -1,4 +1,4 @@
-import React, { useState, useEffect, useRef } from 'react';
+import React, { useState, useEffect } from 'react';
 import {
  View,
  Text,
@@ -8,47 +8,12 @@ import {
  SafeAreaView,
  Animated,
  Modal,
-  TextInput,
-  KeyboardAvoidingView,
-  Platform,
-  Share,
-  Alert,
-  Linking,
 } from 'react-native';
 import { LinearGradient } from 'expo-linear-gradient';
 import { Ionicons, Feather, MaterialCommunityIcons, FontAwesome5 } from '@expo/vector-icons';
-import { captureRef } from 'react-native-view-shot';
-import AsyncStorage from '@react-native-async-storage/async-storage';
 import { colors, typography, spacing, borderRadius, shadows } from '../theme/colors';
 import { SystemStatus, KillSwitchLog } from '../types';
 import VaultScreen from './VaultScreen';
-import BiometricModal from '../components/common/BiometricModal';
-import {
-  SSSShare,
-  mnemonicToEntropy,
-  splitSecret,
-  formatShareCompact,
-  serializeShare,
-  verifyShares,
-} from '../utils/sss';
-
-// Vault storage keys (for testing: clear these to simulate first-open)
-export const VAULT_STORAGE_KEYS = {
-  INITIALIZED: 'sentinel_vault_initialized',
-  SHARE_DEVICE: 'sentinel_share_device',
-} as const;
-
-// Nautical-themed mnemonic word list (unique words only)
-const MNEMONIC_WORDS = [
-  'anchor', 'harbor', 'compass', 'lighthouse', 'current', 'ocean', 'tide', 'voyage',
-  'keel', 'stern', 'bow', 'mast', 'sail', 'port', 'starboard', 'reef',
-  'signal', 'beacon', 'chart', 'helm', 'gale', 'calm', 'cove', 'isle',
-  'horizon', 'sextant', 'sound', 'drift', 'wake', 'mariner', 'pilot', 'fathom',
-  'buoy', 'lantern', 'harpoon', 'lagoon', 'bay', 'strait', 'riptide', 'foam',
-  'coral', 'pearl', 'trident', 'ebb', 'flow', 'vault', 'cipher', 'shroud',
-  'salt', 'wave', 'grotto', 'storm', 'north', 'south', 'east', 'west',
-  'ember', 'cabin', 'ledger', 'torch', 'sanctum', 'oath', 'depths', 'captain',
-] as const;

 // Animation timing constants
 const ANIMATION_DURATION = {
@@ -58,56 +23,13 @@ const ANIMATION_DURATION = {
  heartbeatPress: 150,
 } as const;

-const generateMnemonic = (wordCount = 12) => {
-  const words: string[] = [];
-  for (let i = 0; i < wordCount; i += 1) {
-    const index = Math.floor(Math.random() * MNEMONIC_WORDS.length);
-    words.push(MNEMONIC_WORDS[index]);
-  }
-  return words;
-};
-
-/**
- * Generate SSS shares from mnemonic words
- * Uses Shamir's Secret Sharing (3,2) threshold scheme
- */
-const generateSSSShares = (words: string[]): SSSShare[] => {
-  try {
-    // Convert mnemonic to entropy (big integer)
-    const entropy = mnemonicToEntropy(words, MNEMONIC_WORDS);
-    
-    // Split entropy into 3 shares using SSS
-    const shares = splitSecret(entropy);
-    
-    // Verify shares can recover the original (optional, for debugging)
-    if (__DEV__) {
-      const isValid = verifyShares(shares, entropy);
-      if (!isValid) {
-        console.warn('SSS verification failed!');
-      } else {
-        console.log('SSS shares verified successfully');
-      }
-    }
-    
-    return shares;
-  } catch (error) {
-    console.error('Failed to generate SSS shares:', error);
-    // Fallback: return empty shares (should not happen in production)
-    return [
-      { x: 1, y: BigInt(0), label: 'device' },
-      { x: 2, y: BigInt(0), label: 'cloud' },
-      { x: 3, y: BigInt(0), label: 'heir' },
-    ];
-  }
-};
-
 // Icon names type for type safety
 type StatusIconName = 'checkmark-circle' | 'warning' | 'alert-circle';

 // Status configuration with nautical theme
-const statusConfig: Record<SystemStatus, { 
-  color: string; 
-  label: string; 
+const statusConfig: Record<SystemStatus, {
+  color: string;
+  label: string;
  icon: StatusIconName;
  description: string;
  gradientColors: [string, string];
@@ -137,26 +59,10 @@ const statusConfig: Record<SystemStatus, {

 // Mock data
 const initialLogs: KillSwitchLog[] = [
-  {
-    id: '1',
-    action: 'HEARTBEAT_CONFIRMED',
-    timestamp: new Date('2024-01-18T09:30:00'),
-  },
-  {
-    id: '2',
-    action: 'SUBSCRIPTION_VERIFIED',
-    timestamp: new Date('2024-01-17T00:00:00'),
-  },
-  {
-    id: '3',
-    action: 'JOURNAL_ACTIVITY',
-    timestamp: new Date('2024-01-16T15:42:00'),
-  },
-  {
-    id: '4',
-    action: 'HEARTBEAT_CONFIRMED',
-    timestamp: new Date('2024-01-15T11:20:00'),
-  },
+  { id: '1', action: 'HEARTBEAT_CONFIRMED', timestamp: new Date('2024-01-18T09:30:00') },
+  { id: '2', action: 'SUBSCRIPTION_VERIFIED', timestamp: new Date('2024-01-17T00:00:00') },
+  { id: '3', action: 'JOURNAL_ACTIVITY', timestamp: new Date('2024-01-16T15:42:00') },
+  { id: '4', action: 'HEARTBEAT_CONFIRMED', timestamp: new Date('2024-01-15T11:20:00') },
 ];

 export default function SentinelScreen() {
@@ -168,26 +74,8 @@ export default function SentinelScreen() {
  const [glowAnim] = useState(new Animated.Value(0.5));
  const [rotateAnim] = useState(new Animated.Value(0));
  const [showVault, setShowVault] = useState(false);
-  const [showMnemonic, setShowMnemonic] = useState(false);
-  const [mnemonicWords, setMnemonicWords] = useState<string[]>([]);
-  const [sssShares, setSssShares] = useState<SSSShare[]>([]);
-  const [showEmailForm, setShowEmailForm] = useState(false);
-  const [emailAddress, setEmailAddress] = useState('');
-  const [emailRecipientType, setEmailRecipientType] = useState<'self' | 'heir'>('self');
-  const [isCapturing, setIsCapturing] = useState(false);
-  const [hasVaultInitialized, setHasVaultInitialized] = useState<boolean | null>(null);
-  const [showSetupBiometric, setShowSetupBiometric] = useState(false);
-  const mnemonicRef = useRef<View>(null);
-
-  // Load vault init status on mount (1.1)
-  useEffect(() => {
-    AsyncStorage.getItem(VAULT_STORAGE_KEYS.INITIALIZED)
-      .then((val) => setHasVaultInitialized(val === 'true'))
-      .catch(() => setHasVaultInitialized(false));
-  }, []);

  useEffect(() => {
-    // Pulse animation
    const pulseAnimation = Animated.loop(
      Animated.sequence([
        Animated.timing(pulseAnim, {
@@ -204,7 +92,6 @@ export default function SentinelScreen() {
    );
    pulseAnimation.start();

-    // Glow animation
    const glowAnimation = Animated.loop(
      Animated.sequence([
        Animated.timing(glowAnim, {
@@ -221,7 +108,6 @@ export default function SentinelScreen() {
    );
    glowAnimation.start();

-    // Slow rotate for ship wheel
    const rotateAnimation = Animated.loop(
      Animated.timing(rotateAnim, {
        toValue: 1,
@@ -231,7 +117,6 @@ export default function SentinelScreen() {
    );
    rotateAnimation.start();

-    // Cleanup animations on unmount to prevent memory leaks
    return () => {
      pulseAnimation.stop();
      glowAnimation.stop();
@@ -239,109 +124,9 @@ export default function SentinelScreen() {
    };
  }, [pulseAnim, glowAnim, rotateAnim]);

-  const startFirstTimeSetup = () => {
-    const words = generateMnemonic();
-    const shares = generateSSSShares(words);
-    setMnemonicWords(words);
-    setSssShares(shares);
-    setShowMnemonic(true);
-    setShowVault(false);
-    setShowEmailForm(false);
-    setEmailAddress('');
-    setEmailRecipientType('self');
-
-    if (shares[0]) {
-      AsyncStorage.setItem(VAULT_STORAGE_KEYS.SHARE_DEVICE, serializeShare(shares[0])).catch(() => {});
-    }
-  };
-
-  const completeSetupAndEnterVault = () => {
-    setShowMnemonic(false);
-    setShowEmailForm(false);
-    setEmailAddress('');
-    setShowSetupBiometric(true);
-  };
-
-  const handleSetupBiometricSuccess = () => {
-    setShowSetupBiometric(false);
-    AsyncStorage.setItem(VAULT_STORAGE_KEYS.INITIALIZED, 'true').catch(() => {});
-    setHasVaultInitialized(true);
-    setShowVault(true);
-  };
-
-  const handleSetupBiometricSkip = () => {
-    setShowSetupBiometric(false);
-    AsyncStorage.setItem(VAULT_STORAGE_KEYS.INITIALIZED, 'true').catch(() => {});
-    setHasVaultInitialized(true);
-    setShowVault(true);
-  };
-
-  const handleOpenVault = () => {
-    if (hasVaultInitialized === true) {
-      setShowVault(true);
-      setShowMnemonic(false);
-    } else {
-      startFirstTimeSetup();
-    }
-  };
-
-  const handleScreenshot = async () => {
-    try {
-      setIsCapturing(true);
-      const uri = await captureRef(mnemonicRef, {
-        format: 'png',
-        quality: 1,
-        result: 'tmpfile',
-      });
-      await Share.share({
-        url: uri,
-        message: 'Sentinel key backup',
-      });
-      completeSetupAndEnterVault();
-    } catch (error) {
-      Alert.alert('Screenshot failed', 'Please try again or use email backup.');
-    } finally {
-      setIsCapturing(false);
-    }
-  };
-
-  const handleEmailBackup = () => {
-    setShowEmailForm(true);
-  };
-
-  const handleCompleteBackupLocal = () => {
-    completeSetupAndEnterVault();
-  };
-
-  const handleSendEmail = async () => {
-    const trimmed = emailAddress.trim();
-    if (!trimmed || !/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(trimmed)) {
-      Alert.alert('Invalid email', 'Please enter a valid email address.');
-      return;
-    }
-
-    const subject = encodeURIComponent(
-      emailRecipientType === 'heir'
-        ? 'Sentinel Vault - Share C (Heir)'
-        : 'Sentinel Vault Recovery Key'
-    );
-    const body = encodeURIComponent(
-      emailRecipientType === 'heir'
-        ? `Share C (for heir, 2-of-3 required to recover):\n${sssShares[2] ? serializeShare(sssShares[2]) : ''}\n\nKeep this secure. Combined with Share B from Sentinel cloud, this can restore the vault.`
-        : `Your 12-word mnemonic (backup for yourself):\n${mnemonicWords.join(' ')}`
-    );
-    const mailtoUrl = `mailto:${trimmed}?subject=${subject}&body=${body}`;
-
-    try {
-      await Linking.openURL(mailtoUrl);
-      completeSetupAndEnterVault();
-    } catch (error) {
-      Alert.alert('Email failed', 'Unable to open email client.');
-    }
-  };
+  const openVault = () => setShowVault(true);

  const handleHeartbeat = () => {
-    // Animate pulse
    Animated.sequence([
      Animated.timing(pulseAnim, {
        toValue: 1.15,
@@ -355,43 +140,34 @@ export default function SentinelScreen() {
      }),
    ]).start();

-    // Add new log using functional update to avoid stale closure
    const newLog: KillSwitchLog = {
      id: Date.now().toString(),
      action: 'HEARTBEAT_CONFIRMED',
      timestamp: new Date(),
    };
    setLogs((prevLogs) => [newLog, ...prevLogs]);
-    
-    // Reset status if warning
+
    if (status === 'warning') {
      setStatus('normal');
    }
  };

-  const formatDateTime = (date: Date) => {
-    return date.toLocaleString('en-US', {
+  const formatDateTime = (date: Date) =>
+    date.toLocaleString('en-US', {
      year: 'numeric',
      month: '2-digit',
      day: '2-digit',
      hour: '2-digit',
      minute: '2-digit',
    });
-  };

  const formatTimeAgo = (date: Date) => {
    const now = new Date();
    const diff = now.getTime() - date.getTime();
    const hours = Math.floor(diff / (1000 * 60 * 60));
    const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));
-    
-    if (hours > 24) {
-      const days = Math.floor(hours / 24);
-      return `${days} days ago`;
-    }
-    if (hours > 0) {
-      return `${hours}h ${minutes}m ago`;
-    }
+    if (hours > 24) return `${Math.floor(hours / 24)} days ago`;
+    if (hours > 0) return `${hours}h ${minutes}m ago`;
    return `${minutes}m ago`;
  };

@@ -408,7 +184,7 @@ export default function SentinelScreen() {
        style={styles.gradient}
      >
        <SafeAreaView style={styles.safeArea}>
-          <ScrollView 
+          <ScrollView
            style={styles.scrollView}
            showsVerticalScrollIndicator={false}
            contentContainerStyle={styles.scrollContent}
@@ -424,14 +200,14 @@ export default function SentinelScreen() {

            {/* Status Display */}
            <View style={styles.statusContainer}>
-              <Animated.View 
+              <Animated.View
                style={[
                  styles.statusCircleOuter,
-                  { 
+                  {
                    transform: [{ scale: pulseAnim }],
                    opacity: glowAnim,
                    backgroundColor: `${currentStatus.color}20`,
-                  }
+                  },
                ]}
              />
              <Animated.View style={{ transform: [{ scale: pulseAnim }] }}>
@@ -453,10 +229,10 @@ export default function SentinelScreen() {
            {/* Ship Wheel Watermark */}
            <View style={styles.wheelWatermark}>
              <Animated.View style={{ transform: [{ rotate: spin }] }}>
-                <MaterialCommunityIcons 
-                  name="ship-wheel" 
-                  size={200} 
-                  color={colors.sentinel.primary} 
+                <MaterialCommunityIcons
+                  name="ship-wheel"
+                  size={200}
+                  color={colors.sentinel.primary}
                  style={{ opacity: 0.03 }}
                />
              </Animated.View>
@@ -469,24 +245,16 @@ export default function SentinelScreen() {
                  <FontAwesome5 name="anchor" size={16} color={colors.sentinel.primary} />
                </View>
                <Text style={styles.metricLabel}>SUBSCRIPTION</Text>
-                <Text style={styles.metricValue}>
-                  {formatTimeAgo(lastSubscriptionCheck)}
-                </Text>
-                <Text style={styles.metricTime}>
-                  {formatDateTime(lastSubscriptionCheck)}
-                </Text>
+                <Text style={styles.metricValue}>{formatTimeAgo(lastSubscriptionCheck)}</Text>
+                <Text style={styles.metricTime}>{formatDateTime(lastSubscriptionCheck)}</Text>
              </View>
              <View style={styles.metricCard}>
                <View style={styles.metricIconContainer}>
                  <Feather name="edit-3" size={16} color={colors.sentinel.primary} />
                </View>
                <Text style={styles.metricLabel}>LAST JOURNAL</Text>
-                <Text style={styles.metricValue}>
-                  {formatTimeAgo(lastFlowActivity)}
-                </Text>
-                <Text style={styles.metricTime}>
-                  {formatDateTime(lastFlowActivity)}
-                </Text>
+                <Text style={styles.metricValue}>{formatTimeAgo(lastFlowActivity)}</Text>
+                <Text style={styles.metricTime}>{formatDateTime(lastFlowActivity)}</Text>
              </View>
            </View>

@@ -503,7 +271,7 @@ export default function SentinelScreen() {
              </View>
              <TouchableOpacity
                style={styles.vaultAccessButton}
-                onPress={handleOpenVault}
+                onPress={openVault}
                activeOpacity={0.8}
                accessibilityLabel="Open Shadow Vault"
                accessibilityRole="button"
@@ -547,9 +315,7 @@ export default function SentinelScreen() {
                  <View style={styles.logDot} />
                  <View style={styles.logContent}>
                    <Text style={styles.logAction}>{log.action}</Text>
-                    <Text style={styles.logTime}>
-                      {formatDateTime(log.timestamp)}
-                    </Text>
+                    <Text style={styles.logTime}>{formatDateTime(log.timestamp)}</Text>
                  </View>
                </View>
              ))}
@@ -565,7 +331,7 @@ export default function SentinelScreen() {
        onRequestClose={() => setShowVault(false)}
      >
        <View style={styles.vaultModalContainer}>
-          <VaultScreen />
+          {showVault ? <VaultScreen /> : null}
          <TouchableOpacity
            style={styles.vaultCloseButton}
            onPress={() => setShowVault(false)}
@@ -577,184 +343,20 @@ export default function SentinelScreen() {
          </TouchableOpacity>
        </View>
      </Modal>
-
-      {/* Mnemonic Modal */}
-      <Modal
-        visible={showMnemonic}
-        animationType="fade"
-        transparent
-        onRequestClose={() => setShowMnemonic(false)}
-      >
-        <KeyboardAvoidingView
-          style={styles.mnemonicOverlay}
-          behavior={Platform.OS === 'ios' ? 'padding' : undefined}
-        >
-          <ScrollView
-            style={styles.mnemonicScroll}
-            contentContainerStyle={styles.mnemonicScrollContent}
-            showsVerticalScrollIndicator={false}
-            keyboardShouldPersistTaps="handled"
-          >
-          <View ref={mnemonicRef} collapsable={false}>
-            <LinearGradient
-              colors={[colors.sentinel.cardBackground, colors.sentinel.backgroundGradientEnd]}
-              style={styles.mnemonicCard}
-            >
-            <TouchableOpacity
-              style={styles.mnemonicClose}
-              onPress={() => setShowMnemonic(false)}
-              activeOpacity={0.85}
-              accessibilityLabel="Close mnemonic modal"
-              accessibilityRole="button"
-            >
-              <Ionicons name="close" size={18} color={colors.sentinel.textSecondary} />
-            </TouchableOpacity>
-            <View style={styles.mnemonicHeader}>
-              <MaterialCommunityIcons name="key-variant" size={22} color={colors.sentinel.primary} />
-              <Text style={styles.mnemonicTitle}>12-Word Mnemonic</Text>
-            </View>
-            <Text style={styles.mnemonicSubtitle}>
-              Your seed is protected by SSS (3,2) threshold encryption. Any 2 shares can restore your vault.
-            </Text>
-            <View style={styles.mnemonicBlock}>
-              <Text style={styles.mnemonicBlockText}>
-                {mnemonicWords.join(' ')}
-              </Text>
-            </View>
-            <View style={styles.partGrid}>
-              <View style={[styles.partCard, styles.partCardStored]}>
-                <Text style={styles.partLabel}>SHARE A • DEVICE</Text>
-                <Text style={styles.partValue}>
-                  {sssShares[0] ? formatShareCompact(sssShares[0]) : '---'}
-                </Text>
-                <Text style={styles.partHint}>Stored on this device</Text>
-              </View>
-              <View style={styles.partCard}>
-                <Text style={styles.partLabel}>SHARE B • CLOUD</Text>
-                <Text style={styles.partValue}>
-                  {sssShares[1] ? formatShareCompact(sssShares[1]) : '---'}
-                </Text>
-                <Text style={styles.partHint}>To be synced to Sentinel</Text>
-              </View>
-              <View style={styles.partCard}>
-                <Text style={styles.partLabel}>SHARE C • HEIR</Text>
-                <Text style={styles.partValue}>
-                  {sssShares[2] ? formatShareCompact(sssShares[2]) : '---'}
-                </Text>
-                <Text style={styles.partHint}>For your heir (2-of-3 required)</Text>
-              </View>
-            </View>
-            <TouchableOpacity
-              style={[styles.mnemonicPrimaryButton, isCapturing && styles.mnemonicButtonDisabled]}
-              onPress={handleScreenshot}
-              activeOpacity={0.85}
-              disabled={isCapturing}
-              accessibilityLabel="Take screenshot backup of mnemonic"
-              accessibilityRole="button"
-              accessibilityState={{ disabled: isCapturing }}
-            >
-              <Text style={styles.mnemonicPrimaryText}>
-                {isCapturing ? 'CAPTURING...' : 'PHYSICAL BACKUP (SCREENSHOT)'}
-              </Text>
-            </TouchableOpacity>
-            <TouchableOpacity
-              style={styles.mnemonicSecondaryButton}
-              onPress={handleEmailBackup}
-              activeOpacity={0.85}
-              accessibilityLabel="Send backup via email"
-              accessibilityRole="button"
-            >
-              <Text style={styles.mnemonicSecondaryText}>EMAIL BACKUP</Text>
-            </TouchableOpacity>
-            {showEmailForm ? (
-              <View style={styles.emailForm}>
-                <View style={styles.emailTypeRow}>
-                  <TouchableOpacity
-                    style={[styles.emailTypeButton, emailRecipientType === 'self' && styles.emailTypeButtonActive]}
-                    onPress={() => setEmailRecipientType('self')}
-                  >
-                    <Text style={[styles.emailTypeText, emailRecipientType === 'self' && styles.emailTypeTextActive]}>
-                      To Myself
-                    </Text>
-                  </TouchableOpacity>
-                  <TouchableOpacity
-                    style={[styles.emailTypeButton, emailRecipientType === 'heir' && styles.emailTypeButtonActive]}
-                    onPress={() => setEmailRecipientType('heir')}
-                  >
-                    <Text style={[styles.emailTypeText, emailRecipientType === 'heir' && styles.emailTypeTextActive]}>
-                      To Heir
-                    </Text>
-                  </TouchableOpacity>
-                </View>
-                <TextInput
-                  style={styles.emailInput}
-                  value={emailAddress}
-                  onChangeText={setEmailAddress}
-                  placeholder={emailRecipientType === 'heir' ? 'heir@email.com' : 'you@email.com'}
-                  placeholderTextColor={colors.sentinel.textSecondary}
-                  keyboardType="email-address"
-                  autoCapitalize="none"
-                  autoCorrect={false}
-                />
-                <TouchableOpacity
-                  style={styles.emailSendButton}
-                  onPress={handleSendEmail}
-                  activeOpacity={0.85}
-                  accessibilityLabel="Send backup email"
-                  accessibilityRole="button"
-                >
-                  <Text style={styles.emailSendText}>SEND EMAIL</Text>
-                </TouchableOpacity>
-              </View>
-            ) : null}
-            <TouchableOpacity
-              style={styles.mnemonicTertiaryButton}
-              onPress={handleCompleteBackupLocal}
-              activeOpacity={0.85}
-              accessibilityLabel="I've completed backup locally"
-              accessibilityRole="button"
-            >
-              <Text style={styles.mnemonicTertiaryText}>COMPLETE BACKUP (LOCAL)</Text>
-            </TouchableOpacity>
-            </LinearGradient>
-          </View>
-          </ScrollView>
-        </KeyboardAvoidingView>
-      </Modal>
-
-      {/* Biometric setup prompt after first-time backup (1.4) */}
-      <BiometricModal
-        visible={showSetupBiometric}
-        onSuccess={handleSetupBiometricSuccess}
-        onCancel={handleSetupBiometricSkip}
-        title="Quick Unlock"
-        message="Enable Face ID / Touch ID for faster access next time?"
-        isDark
-      />
    </View>
  );
 }

 const styles = StyleSheet.create({
-  container: {
-    flex: 1,
-  },
-  gradient: {
-    flex: 1,
-  },
-  safeArea: {
-    flex: 1,
-  },
-  scrollView: {
-    flex: 1,
-  },
+  container: { flex: 1 },
+  gradient: { flex: 1 },
+  safeArea: { flex: 1 },
+  scrollView: { flex: 1 },
  scrollContent: {
    padding: spacing.lg,
    paddingBottom: 120,
  },
-  header: {
-    marginBottom: spacing.xl,
-  },
+  header: { marginBottom: spacing.xl },
  headerTitleRow: {
    flexDirection: 'row',
    alignItems: 'center',
@@ -860,9 +462,7 @@ const styles = StyleSheet.create({
    marginBottom: spacing.xl,
    ...shadows.medium,
  },
-  heartbeatGradient: {
-    padding: spacing.lg,
-  },
+  heartbeatGradient: { padding: spacing.lg },
  heartbeatContent: {
    flexDirection: 'row',
    alignItems: 'center',
@@ -916,9 +516,7 @@ const styles = StyleSheet.create({
    marginTop: 6,
    marginRight: spacing.md,
  },
-  logContent: {
-    flex: 1,
-  },
+  logContent: { flex: 1 },
  logAction: {
    fontSize: typography.fontSize.sm,
    color: colors.sentinel.text,
@@ -931,7 +529,6 @@ const styles = StyleSheet.create({
    color: colors.sentinel.textSecondary,
    fontFamily: typography.fontFamily.mono,
  },
-  // Shadow Vault Access Card
  vaultAccessCard: {
    flexDirection: 'row',
    alignItems: 'center',
@@ -951,9 +548,7 @@ const styles = StyleSheet.create({
    justifyContent: 'center',
    marginRight: spacing.md,
  },
-  vaultAccessContent: {
-    flex: 1,
-  },
+  vaultAccessContent: { flex: 1 },
  vaultAccessTitle: {
    fontSize: typography.fontSize.base,
    fontWeight: '600',
@@ -975,7 +570,6 @@ const styles = StyleSheet.create({
    fontWeight: '700',
    fontSize: typography.fontSize.sm,
  },
-  // Vault Modal
  vaultModalContainer: {
    flex: 1,
    backgroundColor: colors.vault.background,
@@ -991,196 +585,4 @@ const styles = StyleSheet.create({
    alignItems: 'center',
    justifyContent: 'center',
  },
-  mnemonicOverlay: {
-    flex: 1,
-    backgroundColor: 'rgba(11, 20, 24, 0.72)',
-    justifyContent: 'center',
-    padding: spacing.lg,
-  },
-  mnemonicScroll: {
-    flex: 1,
-  },
-  mnemonicScrollContent: {
-    flexGrow: 1,
-    justifyContent: 'center',
-  },
-  mnemonicCard: {
-    borderRadius: borderRadius.xl,
-    padding: spacing.lg,
-    borderWidth: 1,
-    borderColor: colors.sentinel.cardBorder,
-    ...shadows.glow,
-  },
-  mnemonicHeader: {
-    flexDirection: 'row',
-    alignItems: 'center',
-    gap: spacing.sm,
-    marginBottom: spacing.sm,
-  },
-  mnemonicClose: {
-    position: 'absolute',
-    top: spacing.sm,
-    right: spacing.sm,
-    width: 32,
-    height: 32,
-    borderRadius: 16,
-    alignItems: 'center',
-    justifyContent: 'center',
-    backgroundColor: 'rgba(26, 58, 74, 0.35)',
-  },
-  mnemonicTitle: {
-    fontSize: typography.fontSize.lg,
-    fontWeight: '700',
-    color: colors.sentinel.text,
-    letterSpacing: typography.letterSpacing.wide,
-  },
-  mnemonicSubtitle: {
-    fontSize: typography.fontSize.sm,
-    color: colors.sentinel.textSecondary,
-    marginBottom: spacing.md,
-  },
-  mnemonicBlock: {
-    backgroundColor: colors.sentinel.cardBackground,
-    borderRadius: borderRadius.lg,
-    paddingVertical: spacing.md,
-    paddingHorizontal: spacing.md,
-    borderWidth: 1,
-    borderColor: colors.sentinel.cardBorder,
-    marginBottom: spacing.lg,
-  },
-  partGrid: {
-    gap: spacing.sm,
-    marginBottom: spacing.lg,
-  },
-  partCard: {
-    backgroundColor: colors.sentinel.cardBackground,
-    borderRadius: borderRadius.lg,
-    paddingVertical: spacing.sm,
-    paddingHorizontal: spacing.md,
-    borderWidth: 1,
-    borderColor: colors.sentinel.cardBorder,
-  },
-  partCardStored: {
-    borderColor: colors.sentinel.primary,
-  },
-  partLabel: {
-    fontSize: typography.fontSize.xs,
-    color: colors.sentinel.textSecondary,
-    letterSpacing: typography.letterSpacing.wide,
-    marginBottom: 4,
-    fontWeight: '600',
-  },
-  partValue: {
-    fontSize: typography.fontSize.md,
-    color: colors.sentinel.text,
-    fontFamily: typography.fontFamily.mono,
-    fontWeight: '700',
-    marginBottom: 2,
-  },
-  partHint: {
-    fontSize: typography.fontSize.xs,
-    color: colors.sentinel.textSecondary,
-  },
-  mnemonicBlockText: {
-    fontSize: typography.fontSize.sm,
-    color: colors.sentinel.text,
-    fontFamily: typography.fontFamily.mono,
-    fontWeight: '600',
-    lineHeight: 22,
-    textAlign: 'center',
-  },
-  mnemonicPrimaryButton: {
-    backgroundColor: colors.sentinel.primary,
-    paddingVertical: spacing.sm,
-    borderRadius: borderRadius.full,
-    alignItems: 'center',
-    marginBottom: spacing.sm,
-  },
-  mnemonicButtonDisabled: {
-    opacity: 0.6,
-  },
-  mnemonicPrimaryText: {
-    color: colors.nautical.cream,
-    fontWeight: '700',
-    letterSpacing: typography.letterSpacing.wide,
-  },
-  mnemonicSecondaryButton: {
-    backgroundColor: 'transparent',
-    paddingVertical: spacing.sm,
-    borderRadius: borderRadius.full,
-    alignItems: 'center',
-    borderWidth: 1,
-    borderColor: colors.sentinel.cardBorder,
-  },
-  mnemonicSecondaryText: {
-    color: colors.sentinel.text,
-    fontWeight: '700',
-    letterSpacing: typography.letterSpacing.wide,
-  },
-  mnemonicTertiaryButton: {
-    backgroundColor: 'transparent',
-    paddingVertical: spacing.sm,
-    borderRadius: borderRadius.full,
-    alignItems: 'center',
-    marginTop: spacing.sm,
-    borderWidth: 1,
-    borderColor: colors.sentinel.cardBorder,
-    borderStyle: 'dashed',
-  },
-  mnemonicTertiaryText: {
-    color: colors.sentinel.textSecondary,
-    fontWeight: '600',
-    letterSpacing: typography.letterSpacing.wide,
-    fontSize: typography.fontSize.sm,
-  },
-  emailTypeRow: {
-    flexDirection: 'row',
-    gap: spacing.sm,
-    marginBottom: spacing.sm,
-  },
-  emailTypeButton: {
-    flex: 1,
-    paddingVertical: spacing.sm,
-    borderRadius: borderRadius.lg,
-    alignItems: 'center',
-    borderWidth: 1,
-    borderColor: colors.sentinel.cardBorder,
-  },
-  emailTypeButtonActive: {
-    borderColor: colors.sentinel.primary,
-    backgroundColor: `${colors.sentinel.primary}15`,
-  },
-  emailTypeText: {
-    fontSize: typography.fontSize.sm,
-    color: colors.sentinel.textSecondary,
-    fontWeight: '600',
-  },
-  emailTypeTextActive: {
-    color: colors.sentinel.primary,
-  },
-  emailForm: {
-    marginTop: spacing.sm,
-  },
-  emailInput: {
-    height: 44,
-    borderRadius: borderRadius.full,
-    borderWidth: 1,
-    borderColor: colors.sentinel.cardBorder,
-    paddingHorizontal: spacing.md,
-    color: colors.sentinel.text,
-    fontSize: typography.fontSize.sm,
-    backgroundColor: 'rgba(255, 255, 255, 0.02)',
-    marginBottom: spacing.sm,
-  },
-  emailSendButton: {
-    backgroundColor: colors.nautical.teal,
-    paddingVertical: spacing.sm,
-    borderRadius: borderRadius.full,
-    alignItems: 'center',
-  },
-  emailSendText: {
-    color: colors.nautical.cream,
-    fontWeight: '700',
-    letterSpacing: typography.letterSpacing.wide,
-  },
 });
--- a/src/screens/VaultScreen.tsx
+++ b/src/screens/VaultScreen.tsx
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -77,6 +77,7 @@ export interface ProtocolInfo {
 export interface User {
  id: number;
  username: string;
+  email?: string;
  public_key: string;
  is_admin: boolean;
  guale: boolean;