fix: keep save button visible when keyboard open, auto-sync after save

src/screens/NewMeasurementScreen.tsx

@@ -30,9 +30,17 @@ export default function NewMeasurementScreen({ navigation }: Props) {
   const handleSubmit = async (m: Measurement) => {
     await initDatabase()
     await insertMeasurement(m)
-    Alert.alert('Opgeslagen', 'Meting is opgeslagen', [
-      { text: 'OK', onPress: () => navigation.goBack() },
-    ])
+    try {
+      const { syncAll } = await import('../sync/syncService')
+      await syncAll()
+      Alert.alert('Opgeslagen & gesynct', 'Meting is opgeslagen en gesynchroniseerd', [
+        { text: 'OK', onPress: () => navigation.goBack() },
+      ])
+    } catch {
+      Alert.alert('Opgeslagen', 'Meting is opgeslagen (sync mislukt)', [
+        { text: 'OK', onPress: () => navigation.goBack() },
+      ])
+    }
   }
 
   if (latest === undefined) {