Merge branch 'multi_prompt_local_storage'

package-lock.json

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@@ -1731,6 +1755,7 @@
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@@ -1827,6 +1852,7 @@
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@@ -1861,6 +1887,7 @@
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@@ -1876,6 +1903,7 @@
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+      "peer": true,
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@@ -1908,6 +1936,7 @@
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+      "peer": true,
       "dependencies": {
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@@ -2026,6 +2055,7 @@
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+      "peer": true,
       "dependencies": {
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@@ -2643,7 +2673,6 @@
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       "license": "MIT",
-      "peer": true,
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@@ -3688,7 +3717,6 @@
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-      "peer": true,
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       "license": "MIT",
-      "peer": true,
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@@ -4482,7 +4509,6 @@
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-      "peer": true,
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       "license": "BSD-2-Clause",
+      "peer": true,
       "engines": {
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@@ -5631,7 +5658,6 @@
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-      "peer": true,
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@@ -9159,7 +9185,6 @@
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-      "peer": true,
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@@ -9243,7 +9268,6 @@
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       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@jest/create-cache-key-function": "^29.6.3",
         "@react-native/assets-registry": "0.76.9",
@@ -9345,7 +9369,6 @@
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-      "peer": true,
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@@ -9356,7 +9379,6 @@
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src/config/index.ts

@@ -27,7 +27,7 @@ export const DEBUG_MODE = true;
 /**
  * Base URL for the backend API server
  */
-export const API_BASE_URL = 'http://localhost:8000';
+export const API_BASE_URL = 'http://192.168.56.103:8000';
 
 /**
  * API request timeout in milliseconds
@@ -137,6 +137,44 @@ export const AI_CONFIG = {
    * Mock response delay in milliseconds (for NO_BACKEND_MODE)
    */
   MOCK_RESPONSE_DELAY: 500,
+
+  /**
+   * AI Roles configuration
+   */
+  ROLES: [
+    {
+      id: 'reflective',
+      name: 'Reflective Assistant',
+      description: 'Helps you dive deep into your thoughts and feelings through meaningful reflection.',
+      systemPrompt: 'You are a helpful journal assistant. Help the user reflect on their thoughts and feelings.',
+      icon: 'journal-outline',
+      iconFamily: 'Ionicons',
+    },
+    {
+      id: 'creative',
+      name: 'Creative Spark',
+      description: 'A partner for brainstorming, creative writing, and exploring new ideas.',
+      systemPrompt: 'You are a creative brainstorming partner. Help the user explore new ideas, write stories, or look at things from a fresh perspective.',
+      icon: 'bulb-outline',
+      iconFamily: 'Ionicons',
+    },
+    {
+      id: 'planner',
+      name: 'Action Planner',
+      description: 'Focused on turning thoughts into actionable plans and organized goals.',
+      systemPrompt: 'You are a productivity coach. Help the user break down their thoughts into actionable steps and clear goals.',
+      icon: 'list-outline',
+      iconFamily: 'Ionicons',
+    },
+    {
+      id: 'empathetic',
+      name: 'Empathetic Guide',
+      description: 'Provides a safe, non-judgmental space for emotional support and empathy.',
+      systemPrompt: 'You are a supportive and empathetic friend. Listen to the user\'s concerns and provide emotional support without judgment.',
+      icon: 'heart-outline',
+      iconFamily: 'Ionicons',
+    },
+  ],
 } as const;
 
 // =============================================================================

src/context/AuthContext.tsx

@@ -9,6 +9,7 @@ import React, { createContext, useContext, useState, useEffect, ReactNode } from
 import AsyncStorage from '@react-native-async-storage/async-storage';
 import { User, LoginRequest, RegisterRequest } from '../types';
 import { authService } from '../services/auth.service';
+import { storageService } from '../services/storage.service';
 
 // =============================================================================
 // Type Definitions
@@ -137,12 +138,13 @@ export function AuthProvider({ children }: { children: ReactNode }) {
   };
 
   /**
-   * Sign out and clear stored auth
+   * Sign out and clear stored auth and session data
    */
   const signOut = () => {
     setUser(null);
     setToken(null);
     clearAuth();
+    //storageService.clearAllData();
   };
 
   return (

src/screens/FlowScreen.tsx

@@ -31,6 +31,8 @@ import * as ImagePicker from 'expo-image-picker';
 import { colors, typography, spacing, borderRadius, shadows } from '../theme/colors';
 import { aiService } from '../services/ai.service';
 import { useAuth } from '../context/AuthContext';
+import { AI_CONFIG } from '../config';
+import { storageService } from '../services/storage.service';
 
 // =============================================================================
 // Type Definitions
@@ -57,7 +59,7 @@ interface ChatSession {
 // =============================================================================
 
 export default function FlowScreen() {
-  const { token, signOut } = useAuth();
+  const { token, user, signOut } = useAuth();
   const scrollViewRef = useRef<ScrollView>(null);
 
   // Current conversation state
@@ -67,6 +69,11 @@ export default function FlowScreen() {
   const [isRecording, setIsRecording] = useState(false);
   const [selectedImage, setSelectedImage] = useState<string | null>(null);
 
+  // AI Role state
+  const [selectedRole, setSelectedRole] = useState(AI_CONFIG.ROLES[0]);
+  const [showRoleModal, setShowRoleModal] = useState(false);
+  const [expandedRoleId, setExpandedRoleId] = useState<string | null>(null);
+
   // History modal state
   const [showHistoryModal, setShowHistoryModal] = useState(false);
   const modalSlideAnim = useRef(new Animated.Value(0)).current;
@@ -104,14 +111,78 @@ export default function FlowScreen() {
     day: 'numeric'
   });
 
-  // Auto-scroll to bottom when new messages arrive
+  // Load history on mount
   useEffect(() => {
+    const loadHistory = async () => {
+      if (!user) return;
+      try {
+        console.log('[FlowScreen] Loading chat history...');
+        const savedHistory = await storageService.getChatHistory(user.id);
+        if (savedHistory && savedHistory.length > 0) {
+          const formattedHistory = savedHistory.map((session: any) => ({
+            ...session,
+            createdAt: new Date(session.createdAt),
+            updatedAt: new Date(session.updatedAt),
+            messages: session.messages.map((msg: any) => ({
+              ...msg,
+              createdAt: new Date(msg.createdAt)
+            }))
+          }));
+          setChatHistory(formattedHistory);
+          console.log('[FlowScreen] Chat history loaded:', formattedHistory.length, 'sessions');
+        } else {
+          console.log('[FlowScreen] No chat history found');
+        }
+      } catch (error) {
+        console.error('Failed to load history:', error);
+      }
+    };
+    loadHistory();
+  }, [user]);
+
+  // Load messages whenever role changes
+  useEffect(() => {
+    const loadRoleMessages = async () => {
+      if (!user) return;
+      try {
+        const savedMessages = await storageService.getCurrentChat(selectedRole.id, user.id);
+        if (savedMessages) {
+          const formattedMessages = savedMessages.map((msg: any) => ({
+            ...msg,
+            createdAt: new Date(msg.createdAt)
+          }));
+          setMessages(formattedMessages);
+        } else {
+          setMessages([]);
+        }
+      } catch (error) {
+        console.error(`Failed to load messages for role ${selectedRole.id}:`, error);
+        setMessages([]);
+      }
+    };
+
+    loadRoleMessages();
+  }, [selectedRole.id, user]);
+
+  // Save current messages for the active role when they change
+  useEffect(() => {
+    if (user && messages.length >= 0) { // Save even if empty to allow clearing
+      storageService.saveCurrentChat(selectedRole.id, messages, user.id);
+    }
+
     if (messages.length > 0) {
       setTimeout(() => {
         scrollViewRef.current?.scrollToEnd({ animated: true });
       }, 100);
     }
-  }, [messages]);
+  }, [messages, selectedRole.id, user]);
+
+  // Save history when it changes
+  useEffect(() => {
+    if (user) {
+      storageService.saveChatHistory(chatHistory, user.id);
+    }
+  }, [chatHistory, user]);
 
   // Modal animation control
   const openHistoryModal = () => {
@@ -168,8 +239,8 @@ export default function FlowScreen() {
     setMessages(prev => [...prev, userMsg]);
 
     try {
-      // Call AI proxy
+      // Call AI proxy with selected role's system prompt
-      const aiResponse = await aiService.sendMessage(userMessage, token);
+      const aiResponse = await aiService.sendMessage(userMessage, token, selectedRole.systemPrompt);
 
       // Add AI response
       const aiMsg: ChatMessage = {
@@ -335,8 +406,11 @@ export default function FlowScreen() {
       setChatHistory(prev => [newSession, ...prev]);
     }
 
-    // Clear current messages
+    // Clear current messages and storage for this role
     setMessages([]);
+    if (user) {
+      storageService.saveCurrentChat(selectedRole.id, [], user.id);
+    }
     closeHistoryModal();
   };
 
@@ -451,9 +525,9 @@ export default function FlowScreen() {
       <View style={styles.emptyIcon}>
         <Feather name="feather" size={48} color={colors.nautical.seafoam} />
       </View>
-      <Text style={styles.emptyTitle}>Start a conversation</Text>
+      <Text style={styles.emptyTitle}>Chatting with {selectedRole.name}</Text>
       <Text style={styles.emptySubtitle}>
-        Ask me anything or share your thoughts
+        {selectedRole.description}
       </Text>
     </View>
   );
@@ -505,6 +579,23 @@ export default function FlowScreen() {
               </View>
             </View>
 
+            {/* Role Header Dropdown */}
+            <TouchableOpacity
+              style={styles.headerRoleButton}
+              onPress={() => setShowRoleModal(true)}
+              activeOpacity={0.7}
+            >
+              <Ionicons
+                name={selectedRole.icon as any}
+                size={16}
+                color={colors.nautical.teal}
+              />
+              <Text style={styles.headerRoleText} numberOfLines={1}>
+                {selectedRole.name}
+              </Text>
+              <Ionicons name="chevron-down" size={14} color={colors.flow.textSecondary} />
+            </TouchableOpacity>
+
             {/* History Button */}
             <TouchableOpacity
               style={styles.historyButton}
@@ -607,7 +698,6 @@ export default function FlowScreen() {
         </SafeAreaView>
       </LinearGradient>
 
-      {/* History Modal - Background appears instantly, content slides up */}
       <Modal
         visible={showHistoryModal}
         animationType="none"
@@ -670,6 +760,89 @@ export default function FlowScreen() {
           </View>
         </TouchableWithoutFeedback>
       </Modal>
+
+      {/* Role Selection Modal */}
+      <Modal
+        visible={showRoleModal}
+        animationType="fade"
+        transparent
+        onRequestClose={() => setShowRoleModal(false)}
+      >
+        <TouchableWithoutFeedback onPress={() => setShowRoleModal(false)}>
+          <View style={styles.modalOverlay}>
+            <TouchableWithoutFeedback onPress={(e) => e.stopPropagation()}>
+              <View style={[styles.modalContent, styles.roleModalContent]}>
+                <View style={styles.modalHandle} />
+                <Text style={styles.modalTitle}>Choose AI Assistant</Text>
+
+                <ScrollView style={styles.roleList} showsVerticalScrollIndicator={false}>
+                  {AI_CONFIG.ROLES.map((role) => (
+                    <View key={role.id} style={styles.roleItemContainer}>
+                      <View
+                        style={[
+                          styles.roleItem,
+                          selectedRole.id === role.id && styles.roleItemActive
+                        ]}
+                      >
+                        <TouchableOpacity
+                          style={styles.roleSelectionArea}
+                          onPress={() => {
+                            setSelectedRole(role as any);
+                            setShowRoleModal(false);
+                          }}
+                        >
+                          <View style={[
+                            styles.roleItemIcon,
+                            selectedRole.id === role.id && styles.roleItemIconActive
+                          ]}>
+                            <Ionicons
+                              name={role.icon as any}
+                              size={20}
+                              color={selectedRole.id === role.id ? '#fff' : colors.nautical.teal}
+                            />
+                          </View>
+                          <Text style={[
+                            styles.roleItemName,
+                            selectedRole.id === role.id && styles.roleItemNameActive
+                          ]}>
+                            {role.name}
+                          </Text>
+                        </TouchableOpacity>
+
+                        <TouchableOpacity
+                          style={styles.infoButton}
+                          onPress={() => {
+                            setExpandedRoleId(expandedRoleId === role.id ? null : role.id);
+                          }}
+                        >
+                          <Ionicons
+                            name={expandedRoleId === role.id ? "close-circle-outline" : "information-circle-outline"}
+                            size={24}
+                            color={expandedRoleId === role.id ? colors.nautical.coral : colors.flow.textSecondary}
+                          />
+                        </TouchableOpacity>
+                      </View>
+
+                      {expandedRoleId === role.id && (
+                        <View style={styles.roleDescription}>
+                          <Text style={styles.roleDescriptionText}>{role.description}</Text>
+                        </View>
+                      )}
+                    </View>
+                  ))}
+                </ScrollView>
+
+                <TouchableOpacity
+                  style={styles.closeButton}
+                  onPress={() => setShowRoleModal(false)}
+                >
+                  <Text style={styles.closeButtonText}>Cancel</Text>
+                </TouchableOpacity>
+              </View>
+            </TouchableWithoutFeedback>
+          </View>
+        </TouchableWithoutFeedback>
+      </Modal>
     </View>
   );
 }
@@ -697,12 +870,33 @@ const styles = StyleSheet.create({
     alignItems: 'center',
     paddingHorizontal: spacing.base,
     paddingTop: spacing.sm,
-    paddingBottom: spacing.md,
+    paddingBottom: spacing.sm,
+    borderBottomWidth: 1,
+    borderBottomColor: 'rgba(0,0,0,0.05)',
   },
   headerLeft: {
     flexDirection: 'row',
     alignItems: 'center',
     gap: spacing.sm,
+    flex: 1,
+  },
+  headerRoleButton: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    backgroundColor: colors.flow.cardBackground,
+    paddingHorizontal: spacing.sm,
+    paddingVertical: 6,
+    borderRadius: borderRadius.full,
+    marginHorizontal: spacing.sm,
+    borderWidth: 1,
+    borderColor: colors.flow.cardBorder,
+    maxWidth: '40%',
+  },
+  headerRoleText: {
+    fontSize: typography.fontSize.xs,
+    fontWeight: '600',
+    color: colors.flow.text,
+    marginHorizontal: 4,
   },
   iconCircle: {
     width: 44,
@@ -773,6 +967,96 @@ const styles = StyleSheet.create({
     textAlign: 'center',
   },
 
+  // Role selection styles
+  roleDropdown: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    backgroundColor: colors.flow.cardBackground,
+    paddingHorizontal: spacing.md,
+    paddingVertical: spacing.sm,
+    borderRadius: borderRadius.lg,
+    marginBottom: spacing.md,
+    ...shadows.soft,
+    borderWidth: 1,
+    borderColor: colors.flow.cardBorder,
+  },
+  roleIcon: {
+    marginRight: spacing.sm,
+  },
+  roleDropdownText: {
+    fontSize: typography.fontSize.base,
+    fontWeight: '600',
+    color: colors.flow.text,
+    marginRight: spacing.xs,
+  },
+  roleModalContent: {
+    paddingBottom: spacing.xl,
+  },
+  roleList: {
+    marginTop: spacing.sm,
+    maxHeight: 400,
+  },
+  roleItemContainer: {
+    marginBottom: spacing.sm,
+  },
+  roleItem: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    justifyContent: 'space-between',
+    borderRadius: borderRadius.lg,
+    backgroundColor: 'transparent',
+    borderWidth: 1,
+    borderColor: 'transparent',
+    overflow: 'hidden',
+  },
+  roleItemActive: {
+    backgroundColor: colors.nautical.paleAqua,
+    borderColor: colors.nautical.lightMint,
+  },
+  roleSelectionArea: {
+    flex: 1,
+    flexDirection: 'row',
+    alignItems: 'center',
+    padding: spacing.md,
+  },
+  roleItemIcon: {
+    width: 36,
+    height: 36,
+    borderRadius: 18,
+    backgroundColor: colors.flow.backgroundGradientStart,
+    justifyContent: 'center',
+    alignItems: 'center',
+    marginRight: spacing.md,
+  },
+  roleItemIconActive: {
+    backgroundColor: colors.nautical.teal,
+  },
+  roleItemName: {
+    fontSize: typography.fontSize.base,
+    fontWeight: '500',
+    color: colors.flow.text,
+  },
+  roleItemNameActive: {
+    fontWeight: '700',
+    color: colors.nautical.teal,
+  },
+  infoButton: {
+    padding: spacing.md,
+    justifyContent: 'center',
+    alignItems: 'center',
+  },
+  roleDescription: {
+    paddingHorizontal: spacing.md + 36 + spacing.md, // icon width + margins
+    paddingBottom: spacing.sm,
+    paddingTop: 0,
+  },
+  roleDescriptionText: {
+    fontSize: typography.fontSize.sm,
+    color: colors.flow.textSecondary,
+    fontStyle: 'italic',
+    lineHeight: 18,
+  },
+
   // Message bubble styles
   messageBubble: {
     flexDirection: 'row',

src/screens/MeScreen.tsx

@@ -14,9 +14,11 @@ import {
 import { LinearGradient } from 'expo-linear-gradient';
 import { Ionicons, Feather, MaterialCommunityIcons, FontAwesome5 } from '@expo/vector-icons';
 import { colors, typography, spacing, borderRadius, shadows } from '../theme/colors';
+import AsyncStorage from '@react-native-async-storage/async-storage';
 import { useAuth } from '../context/AuthContext';
 import { Heir, HeirStatus, PaymentStrategy } from '../types';
 import HeritageScreen from './HeritageScreen';
+import { VAULT_STORAGE_KEYS } from './SentinelScreen';
 
 // Mock heirs data
 const initialHeirs: Heir[] = [
@@ -220,6 +222,7 @@ export default function MeScreen() {
   const [showHeritageModal, setShowHeritageModal] = useState(false);
   const [showThemeModal, setShowThemeModal] = useState(false);
   const [isDarkMode, setIsDarkMode] = useState(false);
+  const [showSignOutModal, setShowSignOutModal] = useState(false);
 
   // Heritage / Fleet Legacy states
   const [heirs, setHeirs] = useState<Heir[]>(initialHeirs);
@@ -294,18 +297,26 @@ export default function MeScreen() {
   };
 
   const handleAbandonIsland = () => {
-    Alert.alert(
+    console.log('[MeScreen] Sign out button clicked');
-      'Sign Out',
+    setShowSignOutModal(true);
-      'Are you sure you want to sign out?',
+  };
-      [
+
-        { text: 'Cancel', style: 'cancel' },
+  const handleConfirmSignOut = () => {
-        {
+    console.log('[MeScreen] User confirmed sign out');
-          text: 'Sign Out',
+    setShowSignOutModal(false);
-          style: 'destructive',
+    signOut();
-          onPress: signOut
+  };
-        },
+
-      ]
+  const handleResetVault = async () => {
-    );
+    try {
+      await AsyncStorage.multiRemove([
+        VAULT_STORAGE_KEYS.INITIALIZED,
+        VAULT_STORAGE_KEYS.SHARE_DEVICE,
+      ]);
+      Alert.alert('Done', 'Vault state reset. Go to Sentinel → Open Shadow Vault to see first-time flow.');
+    } catch (e) {
+      Alert.alert('Error', 'Failed to reset vault state.');
+    }
   };
 
   return (
@@ -885,6 +896,21 @@ export default function MeScreen() {
                   <Text style={styles.sanctumValue}>View</Text>
                 </View>
               </View>
+
+              {__DEV__ && (
+                <View style={styles.sanctumSection}>
+                  <Text style={styles.tideLabel}>DEV ONLY</Text>
+                  <TouchableOpacity
+                    style={styles.devResetButton}
+                    onPress={handleResetVault}
+                    activeOpacity={0.85}
+                  >
+                    <Ionicons name="refresh" size={16} color={colors.nautical.coral} />
+                    <Text style={styles.devResetText}>Reset Vault State</Text>
+                  </TouchableOpacity>
+                  <Text style={styles.sanctumHint}>Clear hasVaultInitialized & Share A. Test first-open flow.</Text>
+                </View>
+              )}
             </ScrollView>
             <View style={styles.tideModalButtons}>
               <TouchableOpacity
@@ -1412,6 +1438,46 @@ export default function MeScreen() {
           </View>
         </View>
       </Modal>
+
+      {/* Sign Out Confirmation Modal */}
+      <Modal
+        visible={showSignOutModal}
+        animationType="fade"
+        transparent
+        onRequestClose={() => setShowSignOutModal(false)}
+      >
+        <View style={styles.spiritOverlay}>
+          <View style={styles.signOutModal}>
+            <View style={styles.signOutHeader}>
+              <View style={styles.signOutIcon}>
+                <Feather name="log-out" size={32} color={colors.nautical.coral} />
+              </View>
+              <Text style={styles.signOutTitle}>Sign Out</Text>
+              <Text style={styles.signOutMessage}>
+                Are you sure you want to sign out? You'll need to log in again to access your account.
+              </Text>
+            </View>
+
+            <View style={styles.signOutButtons}>
+              <TouchableOpacity
+                style={styles.signOutCancelButton}
+                onPress={() => setShowSignOutModal(false)}
+                activeOpacity={0.85}
+              >
+                <Text style={styles.signOutCancelText}>Cancel</Text>
+              </TouchableOpacity>
+
+              <TouchableOpacity
+                style={styles.signOutConfirmButton}
+                onPress={handleConfirmSignOut}
+                activeOpacity={0.85}
+              >
+                <Text style={styles.signOutConfirmText}>Sign Out</Text>
+              </TouchableOpacity>
+            </View>
+          </View>
+        </View>
+      </Modal>
     </View>
   );
 }
@@ -1814,6 +1880,23 @@ const styles = StyleSheet.create({
     fontSize: typography.fontSize.sm,
     color: colors.me.textSecondary,
   },
+  devResetButton: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: spacing.sm,
+    paddingVertical: spacing.sm,
+    paddingHorizontal: spacing.md,
+    backgroundColor: `${colors.nautical.coral}15`,
+    borderRadius: borderRadius.lg,
+    borderWidth: 1,
+    borderColor: `${colors.nautical.coral}40`,
+    alignSelf: 'flex-start',
+  },
+  devResetText: {
+    fontSize: typography.fontSize.sm,
+    color: colors.nautical.coral,
+    fontWeight: '600',
+  },
   sanctumAlert: {
     flexDirection: 'row',
     alignItems: 'center',
@@ -2333,4 +2416,71 @@ const styles = StyleSheet.create({
     justifyContent: 'center',
     zIndex: 10,
   },
+  // Sign Out Modal Styles
+  signOutModal: {
+    backgroundColor: colors.me.cardBackground,
+    borderRadius: borderRadius.xl,
+    padding: spacing.xl,
+    marginHorizontal: spacing.xl,
+    maxWidth: 400,
+    width: '100%',
+    ...shadows.medium,
+  },
+  signOutHeader: {
+    alignItems: 'center',
+    marginBottom: spacing.xl,
+  },
+  signOutIcon: {
+    width: 72,
+    height: 72,
+    borderRadius: 36,
+    backgroundColor: `${colors.nautical.coral}15`,
+    alignItems: 'center',
+    justifyContent: 'center',
+    marginBottom: spacing.base,
+  },
+  signOutTitle: {
+    fontSize: typography.fontSize.xl,
+    fontWeight: '700',
+    color: colors.me.text,
+    marginBottom: spacing.sm,
+  },
+  signOutMessage: {
+    fontSize: typography.fontSize.base,
+    color: colors.me.textSecondary,
+    textAlign: 'center',
+    lineHeight: typography.fontSize.base * 1.5,
+  },
+  signOutButtons: {
+    flexDirection: 'row',
+    gap: spacing.md,
+  },
+  signOutCancelButton: {
+    flex: 1,
+    paddingVertical: spacing.base,
+    paddingHorizontal: spacing.lg,
+    borderRadius: borderRadius.lg,
+    backgroundColor: colors.me.cardBorder,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  signOutCancelText: {
+    fontSize: typography.fontSize.base,
+    fontWeight: '600',
+    color: colors.me.text,
+  },
+  signOutConfirmButton: {
+    flex: 1,
+    paddingVertical: spacing.base,
+    paddingHorizontal: spacing.lg,
+    borderRadius: borderRadius.lg,
+    backgroundColor: colors.nautical.coral,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  signOutConfirmText: {
+    fontSize: typography.fontSize.base,
+    fontWeight: '600',
+    color: '#fff',
+  },
 });

src/screens/SentinelScreen.tsx

@@ -22,6 +22,7 @@ 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,
@@ -31,6 +32,12 @@ import {
   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',
@@ -166,9 +173,19 @@ export default function SentinelScreen() {
   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(
@@ -222,7 +239,7 @@ export default function SentinelScreen() {
     };
   }, [pulseAnim, glowAnim, rotateAnim]);
 
-  const openVaultWithMnemonic = () => {
+  const startFirstTimeSetup = () => {
     const words = generateMnemonic();
     const shares = generateSSSShares(words);
     setMnemonicWords(words);
@@ -231,12 +248,40 @@ export default function SentinelScreen() {
     setShowVault(false);
     setShowEmailForm(false);
     setEmailAddress('');
+    setEmailRecipientType('self');
 
-    // Store Share A (device share) locally
     if (shares[0]) {
-      AsyncStorage.setItem('sentinel_share_device', serializeShare(shares[0])).catch(() => {
+      AsyncStorage.setItem(VAULT_STORAGE_KEYS.SHARE_DEVICE, serializeShare(shares[0])).catch(() => {});
-        // Best-effort local store; UI remains available
+    }
-      });
+  };
+
+  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();
     }
   };
 
@@ -252,8 +297,7 @@ export default function SentinelScreen() {
         url: uri,
         message: 'Sentinel key backup',
       });
-      setShowMnemonic(false);
+      completeSetupAndEnterVault();
-      setShowVault(true);
     } catch (error) {
       Alert.alert('Screenshot failed', 'Please try again or use email backup.');
     } finally {
@@ -265,6 +309,10 @@ export default function SentinelScreen() {
     setShowEmailForm(true);
   };
 
+  const handleCompleteBackupLocal = () => {
+    completeSetupAndEnterVault();
+  };
+
   const handleSendEmail = async () => {
     const trimmed = emailAddress.trim();
     if (!trimmed || !/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(trimmed)) {
@@ -272,16 +320,21 @@ export default function SentinelScreen() {
       return;
     }
 
-    const subject = encodeURIComponent('Sentinel Vault Recovery Key');
+    const subject = encodeURIComponent(
-    const body = encodeURIComponent(`Your 12-word mnemonic:\n${mnemonicWords.join(' ')}`);
+      emailRecipientType === 'heir'
+        ? 'Sentinel Vault - Share C (Heir)'
+        : 'Sentinel Vault Recovery Key'
+    );
+    const body = encodeURIComponent(
+      emailRecipientType === 'heir'
+        ? `Share C (for heir, 2-of-3 required to recover):\n${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);
-      setShowMnemonic(false);
+      completeSetupAndEnterVault();
-      setShowEmailForm(false);
-      setEmailAddress('');
-      setShowVault(true);
     } catch (error) {
       Alert.alert('Email failed', 'Unable to open email client.');
     }
@@ -450,7 +503,7 @@ export default function SentinelScreen() {
               </View>
               <TouchableOpacity
                 style={styles.vaultAccessButton}
-                onPress={openVaultWithMnemonic}
+                onPress={handleOpenVault}
                 activeOpacity={0.8}
                 accessibilityLabel="Open Shadow Vault"
                 accessibilityRole="button"
@@ -535,6 +588,12 @@ export default function SentinelScreen() {
         <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
@@ -602,18 +661,36 @@ export default function SentinelScreen() {
               style={styles.mnemonicSecondaryButton}
               onPress={handleEmailBackup}
               activeOpacity={0.85}
-              accessibilityLabel="Send mnemonic backup via email"
+              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="you@email.com"
+                  placeholder={emailRecipientType === 'heir' ? 'heir@email.com' : 'you@email.com'}
                   placeholderTextColor={colors.sentinel.textSecondary}
                   keyboardType="email-address"
                   autoCapitalize="none"
@@ -630,10 +707,30 @@ export default function SentinelScreen() {
                 </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>
   );
 }
@@ -900,6 +997,13 @@ const styles = StyleSheet.create({
     justifyContent: 'center',
     padding: spacing.lg,
   },
+  mnemonicScroll: {
+    flex: 1,
+  },
+  mnemonicScrollContent: {
+    flexGrow: 1,
+    justifyContent: 'center',
+  },
   mnemonicCard: {
     borderRadius: borderRadius.xl,
     padding: spacing.lg,
@@ -1013,6 +1117,47 @@ const styles = StyleSheet.create({
     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,
   },

src/services/ai.service.ts

@@ -143,13 +143,14 @@ export const aiService = {
    * Simple helper for single message chat
    * @param content - User message content
    * @param token - JWT token for authentication
+   * @param systemPrompt - Optional custom system prompt
    * @returns AI response text
    */
-  async sendMessage(content: string, token?: string): Promise<string> {
+  async sendMessage(content: string, token?: string, systemPrompt?: string): Promise<string> {
     const messages: AIMessage[] = [
       {
         role: 'system',
-        content: AI_CONFIG.DEFAULT_SYSTEM_PROMPT,
+        content: systemPrompt || AI_CONFIG.DEFAULT_SYSTEM_PROMPT,
       },
       {
         role: 'user',

src/services/storage.service.ts

@@ -0,0 +1,120 @@
+/**
+ * Storage Service
+ * 
+ * Handles local persistence of chat history and active conversations
+ * using AsyncStorage with user-specific isolation.
+ */
+
+import AsyncStorage from '@react-native-async-storage/async-storage';
+
+// =============================================================================
+// Constants
+// =============================================================================
+
+const STORAGE_KEYS = {
+    CHAT_HISTORY: '@sentinel:chat_history',
+    CURRENT_MESSAGES: '@sentinel:current_messages',
+} as const;
+
+// =============================================================================
+// Service Implementation
+// =============================================================================
+
+export const storageService = {
+    /**
+     * Get user-specific storage key
+     */
+    getUserKey(baseKey: string, userId: string | number): string {
+        return `${baseKey}:user_${userId}`;
+    },
+
+    /**
+     * Save the complete list of chat sessions to local storage for a specific user
+     */
+    async saveChatHistory(history: any[], userId: string | number): Promise<void> {
+        try {
+            const jsonValue = JSON.stringify(history);
+            const key = this.getUserKey(STORAGE_KEYS.CHAT_HISTORY, userId);
+            await AsyncStorage.setItem(key, jsonValue);
+            console.log(`[Storage] Saved chat history for user ${userId}:`, history.length, 'sessions');
+        } catch (e) {
+            console.error('Error saving chat history:', e);
+        }
+    },
+
+    /**
+     * Load the list of chat sessions from local storage for a specific user
+     */
+    async getChatHistory(userId: string | number): Promise<any[]> {
+        try {
+            const key = this.getUserKey(STORAGE_KEYS.CHAT_HISTORY, userId);
+            const jsonValue = await AsyncStorage.getItem(key);
+            const result = jsonValue != null ? JSON.parse(jsonValue) : [];
+            console.log(`[Storage] Loaded chat history for user ${userId}:`, result.length, 'sessions');
+            return result;
+        } catch (e) {
+            console.error('Error getting chat history:', e);
+            return [];
+        }
+    },
+
+    /**
+   * Save the current active conversation messages for a specific role and user
+   */
+    async saveCurrentChat(roleId: string, messages: any[], userId: string | number): Promise<void> {
+        try {
+            const jsonValue = JSON.stringify(messages);
+            const key = `${this.getUserKey(STORAGE_KEYS.CURRENT_MESSAGES, userId)}:${roleId}`;
+            await AsyncStorage.setItem(key, jsonValue);
+            console.log(`[Storage] Saved current chat for user ${userId}, role ${roleId}:`, messages.length, 'messages');
+        } catch (e) {
+            console.error(`Error saving current chat for role ${roleId}:`, e);
+        }
+    },
+
+    /**
+     * Load the current active conversation messages for a specific role and user
+     */
+    async getCurrentChat(roleId: string, userId: string | number): Promise<any[]> {
+        try {
+            const key = `${this.getUserKey(STORAGE_KEYS.CURRENT_MESSAGES, userId)}:${roleId}`;
+            const jsonValue = await AsyncStorage.getItem(key);
+            const result = jsonValue != null ? JSON.parse(jsonValue) : [];
+            console.log(`[Storage] Loaded current chat for user ${userId}, role ${roleId}:`, result.length, 'messages');
+            return result;
+        } catch (e) {
+            console.error(`Error getting current chat for role ${roleId}:`, e);
+            return [];
+        }
+    },
+
+    /**
+     * Clear all stored chat data for a specific user
+     */
+    async clearUserData(userId: string | number): Promise<void> {
+        try {
+            const keys = await AsyncStorage.getAllKeys();
+            const userPrefix = `:user_${userId}`;
+            const userKeys = keys.filter(key => key.includes(userPrefix));
+            await AsyncStorage.multiRemove(userKeys);
+            console.log(`[Storage] Cleared all data for user ${userId}:`, userKeys.length, 'keys removed');
+        } catch (e) {
+            console.error('Error clearing user data:', e);
+        }
+    },
+
+    /**
+     * Clear all stored chat data (all users)
+     */
+    async clearAllData(): Promise<void> {
+        try {
+            const keys = await AsyncStorage.getAllKeys();
+            const sentinelKeys = keys.filter(key => key.startsWith('@sentinel:'));
+            await AsyncStorage.multiRemove(sentinelKeys);
+            console.log('[Storage] Cleared all data:', sentinelKeys.length, 'keys removed');
+        } catch (e) {
+            console.error('Error clearing storage data:', e);
+        }
+    }
+};
+

src/utils/sss.ts

@@ -5,7 +5,12 @@
  * - Secret is split into 3 shares
  * - Any 2 shares can recover the original secret
  *
- * Based on the Sentinel crypto_core_demo Python implementation.
+ * Correspondence with crypto_core_demo (Python):
+ * - sp_trust_sharding.py: split_to_shares(), recover_from_shares()
+ * - Same algorithm: f(x) = secret + a*x (mod P), Lagrange interpolation
+ * - Difference: entropy conversion. Python uses BIP-39 (mnemonic.to_entropy);
+ *   we use custom word list index-based encoding for compatibility with
+ *   existing MNEMONIC_WORDS. SSS split/recover logic is identical.
  */
 
 // Use a large prime for the finite field