background upload

mobile/package.json

@@ -12,6 +12,7 @@
     "@tanstack/react-query-persist-client": "^5.101.4",
     "drizzle-orm": "^0.45.2",
     "expo": "~57.0.4",
+    "expo-background-task": "~57.0.6",
     "expo-document-picker": "~57.0.0",
     "expo-file-system": "~57.0.0",
     "expo-image": "~57.0.1",
@@ -21,6 +22,7 @@
     "expo-secure-store": "~57.0.0",
     "expo-sqlite": "~57.0.1",
     "expo-status-bar": "~57.0.0",
+    "expo-task-manager": "~57.0.6",
     "react": "19.2.3",
     "react-native": "0.86.0",
     "react-native-gesture-handler": "~2.32.0",