diff --git a/apps/backend/src/__tests__/profiles.test.ts b/apps/backend/src/__tests__/profiles.test.ts
index ef1aad6..da6d10a 100644
--- a/apps/backend/src/__tests__/profiles.test.ts
+++ b/apps/backend/src/__tests__/profiles.test.ts
@@ -29,7 +29,7 @@ const mockPrisma = {
 
 async function buildApp() {
   const app = Fastify();
-  app.decorate('prisma', mockPrisma);
+  app.decorate('prisma', mockPrisma as any);
   app.decorate('authenticate', async (request: any) => {
     request.user = { id: 'user-123' };
   });
diff --git a/apps/backend/src/routes/analytics.ts b/apps/backend/src/routes/analytics.ts
index e9a75bb..e65305b 100644
--- a/apps/backend/src/routes/analytics.ts
+++ b/apps/backend/src/routes/analytics.ts
@@ -57,9 +57,9 @@ export async function analyticsRoutes(app: FastifyInstance) {
     };
   });
 
-  app.get('/views', {
+  app.get<{ Querystring: { page?: string; cardId?: string } }>('/views', {
     preHandler: [app.authenticate],
-  }, async (request: FastifyRequest<{ Querystring: { page?: string, cardId?: string } }>, reply: FastifyReply) => {
+  }, async (request, reply) => {
     const userId = (request.user as any).id;
     const page = parseInt(request.query.page || '1', 10);
     const limit = 20;
diff --git a/apps/backend/src/routes/auth.ts b/apps/backend/src/routes/auth.ts
index febc41d..df8631e 100644
--- a/apps/backend/src/routes/auth.ts
+++ b/apps/backend/src/routes/auth.ts
@@ -134,7 +134,7 @@ export async function authRoutes(app: FastifyInstance) {
 
       return reply.redirect(`${process.env.PUBLIC_APP_URL}/dashboard`);
     } catch (err) {
-      app.log.error('GitHub auth error:', err);
+      app.log.error({ err }, 'GitHub auth error');
       return reply.status(500).send({ error: 'Authentication failed' });
     }
   });
@@ -235,7 +235,7 @@ export async function authRoutes(app: FastifyInstance) {
 
       return reply.redirect(`${process.env.PUBLIC_APP_URL}/dashboard`);
     } catch (err) {
-      app.log.error('Google auth error:', err);
+      app.log.error({ err }, 'Google auth error');
       return reply.status(500).send({ error: 'Authentication failed' });
     }
   });
diff --git a/apps/backend/src/routes/connect.ts b/apps/backend/src/routes/connect.ts
index 68f8671..e2a38c0 100644
--- a/apps/backend/src/routes/connect.ts
+++ b/apps/backend/src/routes/connect.ts
@@ -1,4 +1,6 @@
 import type { FastifyInstance, FastifyRequest, FastifyReply } from 'fastify';
+import { encrypt } from '../utils/encryption.js';
+import { randomBytes } from 'crypto';
 
 const GITHUB_AUTH_URL = 'https://github.com/login/oauth/authorize';
 const GITHUB_TOKEN_URL = 'https://github.com/login/oauth/access_token';
@@ -52,7 +54,7 @@ export async function connectRoutes(app: FastifyInstance) {
     return reply.redirect(`${GITHUB_AUTH_URL}?${params}`);
   });
 
-  app.get('/github/callback', async (request: FastifyRequest<{ Querystring: OAuthCallbackQuery }>, reply: FastifyReply) => {
+  app.get<{ Querystring: OAuthCallbackQuery }>('/github/callback', async (request, reply) => {
     const { code, state } = request.query;
 
     if (!code || !state) {
@@ -95,7 +97,7 @@ export async function connectRoutes(app: FastifyInstance) {
       }
 
       // Encrypt and store the token
-      const encryptedToken = app.encryption.encrypt(tokenData.access_token);
+      const encryptedToken = encrypt(tokenData.access_token);
 
       await app.prisma.oAuthToken.upsert({
         where: {
@@ -125,7 +127,7 @@ export async function connectRoutes(app: FastifyInstance) {
       return reply.redirect(`${process.env.PUBLIC_APP_URL}/settings?connected=github`);
 
     } catch (err) {
-      app.log.error('GitHub connect error:', err);
+      app.log.error({ err }, 'GitHub connect error');
       return reply.redirect(`${process.env.PUBLIC_APP_URL}/settings?error=server_error`);
     }
   });
@@ -133,9 +135,9 @@ export async function connectRoutes(app: FastifyInstance) {
 
   // ─── Disconnect ───
 
-  app.delete('/:platform', {
+  app.delete<{ Params: { platform: string } }>('/:platform', {
     preHandler: [app.authenticate],
-  }, async (request: FastifyRequest<{ Params: { platform: string } }>, reply: FastifyReply) => {
+  }, async (request, reply) => {
     const userId = (request.user as any).id;
     const { platform } = request.params;
 
diff --git a/apps/mobile/src/components/Skeleton.tsx b/apps/mobile/src/components/Skeleton.tsx
index 23f52d2..a20ec7f 100644
--- a/apps/mobile/src/components/Skeleton.tsx
+++ b/apps/mobile/src/components/Skeleton.tsx
@@ -1,10 +1,10 @@
 import React, { useEffect, useRef } from 'react';
-import { View, Animated, StyleSheet, ViewStyle } from 'react-native';
+import { View, Animated, StyleSheet, ViewStyle, DimensionValue } from 'react-native';
 import { COLORS } from '../theme/tokens';
 
 interface SkeletonProps {
-  width?: number | string;
-  height?: number | string;
+  width?: DimensionValue;
+  height?: DimensionValue;
   borderRadius?: number;
   style?: ViewStyle;
 }
diff --git a/apps/mobile/src/context/AuthContext.tsx b/apps/mobile/src/context/AuthContext.tsx
index 77559e4..63e1e25 100644
--- a/apps/mobile/src/context/AuthContext.tsx
+++ b/apps/mobile/src/context/AuthContext.tsx
@@ -1,5 +1,6 @@
 import React, { createContext, useContext, useState, useEffect, ReactNode } from 'react';
 import { API_BASE_URL } from '../config';
+import AsyncStorage from '@react-native-async-storage/async-storage';
 
 interface User {
   id: string;
@@ -33,14 +34,34 @@ export function AuthProvider({ children }: { children: ReactNode }) {
   const [isLoading, setIsLoading] = useState(true);
 
   useEffect(() => {
-    // TODO: Load token from secure storage on app start
-    setIsLoading(false);
+    const loadToken = async () => {
+      try {
+        const storedToken = await AsyncStorage.getItem('devcard_auth_token');
+        if (storedToken) {
+          setToken(storedToken);
+          const res = await fetch(`${API_BASE_URL}/api/profiles/me`, {
+            headers: { Authorization: `Bearer ${storedToken}` },
+          });
+          if (res.ok) {
+            const userData = await res.json();
+            setUser(userData);
+          } else {
+            await AsyncStorage.removeItem('devcard_auth_token');
+          }
+        }
+      } catch (err) {
+        console.error('Failed to load token:', err);
+      } finally {
+        setIsLoading(false);
+      }
+    };
+    loadToken();
   }, []);
 
   const login = async (newToken: string) => {
     setToken(newToken);
-    // TODO: Save token to secure storage
     try {
+      await AsyncStorage.setItem('devcard_auth_token', newToken);
       const res = await fetch(`${API_BASE_URL}/api/profiles/me`, {
         headers: { Authorization: `Bearer ${newToken}` },
       });
@@ -56,7 +77,9 @@ export function AuthProvider({ children }: { children: ReactNode }) {
   const logout = () => {
     setToken(null);
     setUser(null);
-    // TODO: Clear token from secure storage
+    AsyncStorage.removeItem('devcard_auth_token').catch(err => {
+      console.error('Failed to clear token:', err);
+    });
   };
 
   const refreshUser = async () => {
diff --git a/apps/mobile/src/navigation/MainTabs.tsx b/apps/mobile/src/navigation/MainTabs.tsx
index 11e4e9a..10ba23f 100644
--- a/apps/mobile/src/navigation/MainTabs.tsx
+++ b/apps/mobile/src/navigation/MainTabs.tsx
@@ -12,8 +12,8 @@ import ScanScreen from '../screens/ScanScreen';
 import DevCardViewScreen from '../screens/DevCardViewScreen';
 import WebViewScreen from '../screens/WebViewScreen';
 
-import ConnectPlatformsScreen from '../screens/ConnectPlatformsScreen';
-import ViewsScreen from '../screens/ViewsScreen';
+import { ConnectPlatformsScreen } from '../screens/ConnectPlatformsScreen';
+import { ViewsScreen } from '../screens/ViewsScreen';
 
 // ─── Types ───
 
diff --git a/apps/mobile/src/screens/SettingsScreen.tsx b/apps/mobile/src/screens/SettingsScreen.tsx
index 7d282a6..64528fe 100644
--- a/apps/mobile/src/screens/SettingsScreen.tsx
+++ b/apps/mobile/src/screens/SettingsScreen.tsx
@@ -14,9 +14,13 @@ import { SafeAreaView } from 'react-native-safe-area-context';
 import { COLORS, SPACING, FONT_SIZE, BORDER_RADIUS } from '../theme/tokens';
 import { useAuth } from '../context/AuthContext';
 import { API_BASE_URL } from '../config';
+import { useNavigation } from '@react-navigation/native';
+import type { NativeStackNavigationProp } from '@react-navigation/native-stack';
+import type { RootStackParamList } from '../navigation/MainTabs';
 
 export default function SettingsScreen() {
   const { user, token, refreshUser, logout } = useAuth();
+  const navigation = useNavigation<NativeStackNavigationProp<RootStackParamList>>();
   const [displayName, setDisplayName] = useState(user?.displayName || '');
   const [bio, setBio] = useState(user?.bio || '');
   const [pronouns, setPronouns] = useState(user?.pronouns || '');