fix(mobile): address Apple review onboarding flows

apps/mobile/src/hooks/useAvatarPicker.ts

@@ -1,5 +1,5 @@
 import { useState, useCallback, useRef } from 'react';
-import { Alert, Platform, ActionSheetIOS } from 'react-native';
+import { Alert, Platform, ActionSheetIOS, Linking } from 'react-native';
 import * as ImagePicker from 'expo-image-picker';
 import * as FileSystem from 'expo-file-system/legacy';
 import { uploadMedia } from '../lib/mediaApi';
@@ -85,14 +85,26 @@ export function useAvatarPicker(options?: UseAvatarPickerOptions): UseAvatarPick
         const currentOptions = optionsRef.current;
 
         try {
-            let result: ImagePicker.ImagePickerResult;
-
-            if (source === 'camera') {
-                const { status } = await ImagePicker.requestCameraPermissionsAsync();
-                if (status !== 'granted') {
-                    Alert.alert('Permission Denied', 'Camera access is required to take a photo.');
-                    return;
-                }
+            let result: ImagePicker.ImagePickerResult;
+
+            if (source === 'camera') {
+                const existingPermission = await ImagePicker.getCameraPermissionsAsync();
+                if (existingPermission.status !== 'granted' && !existingPermission.canAskAgain) {
+                    Alert.alert(
+                        'Camera Access',
+                        'To take a photo, allow camera access in Settings.',
+                        [
+                            { text: 'Not Now', style: 'cancel' },
+                            { text: 'Open Settings', onPress: () => Linking.openSettings() },
+                        ]
+                    );
+                    return;
+                }
+
+                const { status } = await ImagePicker.requestCameraPermissionsAsync();
+                if (status !== 'granted') {
+                    return;
+                }
                 result = await ImagePicker.launchCameraAsync({
                     mediaTypes: ['images'],
                     allowsEditing: true,