fix: align expo packages to SDK 54 expected versions

Expo's version checker reported mismatches; update to exact expected versions:
  expo-sqlite ~16.0.10, expo-document-picker ~14.0.8,
  expo-file-system ~19.0.21, expo-background-fetch ~14.0.9,
  expo-task-manager ~14.0.9, react-native-webview 13.15.0,
  typescript ~5.9.2

expo-file-system v19 moved the legacy API (documentDirectory, copyAsync,
makeDirectoryAsync) to 'expo-file-system/legacy' — update import in import.tsx.

mobile/package.json

@@ -12,11 +12,11 @@
   "dependencies": {
     "expo": "~54.0.33",
     "expo-router": "~6.0.23",
-    "expo-sqlite": "~15.0.6",
-    "expo-document-picker": "~13.1.6",
-    "expo-file-system": "~18.0.12",
-    "expo-background-fetch": "~13.1.6",
-    "expo-task-manager": "~13.1.6",
+    "expo-sqlite": "~16.0.10",
+    "expo-document-picker": "~14.0.8",
+    "expo-file-system": "~19.0.21",
+    "expo-background-fetch": "~14.0.9",
+    "expo-task-manager": "~14.0.9",
     "expo-notifications": "~0.32.16",
     "expo-constants": "~18.0.13",
     "expo-linking": "~8.0.11",
@@ -27,12 +27,12 @@
     "react-native": "0.81.5",
     "react-native-safe-area-context": "~5.6.0",
     "react-native-screens": "~4.16.0",
-    "react-native-webview": "~13.16.0",
+    "react-native-webview": "13.15.0",
     "@maplibre/maplibre-react-native": "~11.0.0"
   },
   "devDependencies": {
     "@babel/core": "^7.25.0",
     "@types/react": "~19.1.0",
-    "typescript": "~5.8.0"
+    "typescript": "~5.9.2"
   }
 }