chore(android): target API 36 with Expo 54

Upgrade the mobile native toolchain and Expo dependencies for Android 16 compatibility while preserving web and admin runtime isolation.

apps/mobile/src/features/live-draw/components/DrawingShareModal.tsx

@@ -23,7 +23,7 @@ import { Ionicons } from '@expo/vector-icons';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
 import ViewShot from 'react-native-view-shot';
 import * as Sharing from 'expo-sharing';
-import * as FileSystem from 'expo-file-system';
+import * as FileSystem from 'expo-file-system/legacy';
 import { colors, gradients, radius, typography, spacing, blur } from '../../../theme';
 
 const logo = require('../../../../assets/logo.png');

apps/mobile/src/features/live-draw/hooks/useCanvasCapture.ts

@@ -1,7 +1,7 @@
 import { useCallback, useRef } from 'react';
 import type { SkImage } from '@shopify/react-native-skia';
 import * as MediaLibrary from 'expo-media-library';
-import * as FileSystem from 'expo-file-system';
+import * as FileSystem from 'expo-file-system/legacy';
 
 interface UseCanvasCaptureReturn {
   makeSnapshot: React.MutableRefObject<(() => SkImage | null) | null>;