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app/_layout.tsx

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+import { useEffect } from 'react';
+import { Stack } from 'expo-router';
+import { GestureHandlerRootView } from 'react-native-gesture-handler';
+import { StatusBar } from 'expo-status-bar';
+import * as Updates from 'expo-updates';
+import { useBootAuth } from '../hooks/useAuth';
+import { Colors } from '../constants/theme';
+
+export default function RootLayout() {
+  useBootAuth();
+  useOTAUpdates();
+
+  return (
+    <GestureHandlerRootView style={{ flex: 1, backgroundColor: Colors.bg }}>
+      <StatusBar style="light" />
+      <Stack screenOptions={{ headerShown: false, contentStyle: { backgroundColor: Colors.bg } }}>
+        <Stack.Screen name="(tabs)" />
+        <Stack.Screen name="auth" options={{ presentation: 'fullScreenModal' }} />
+      </Stack>
+    </GestureHandlerRootView>
+  );
+}
+
+function useOTAUpdates() {
+  useEffect(() => {
+    if (__DEV__) return;
+    (async () => {
+      try {
+        const check = await Updates.checkForUpdateAsync();
+        if (check.isAvailable) {
+          await Updates.fetchUpdateAsync();
+          await Updates.reloadAsync();
+        }
+      } catch {
+        // silent fail
+      }
+    })();
+  }, []);
+}