feat: add MeasurementDetailScreen, 365-day charts, and edit support

- New MeasurementDetailScreen with wijzigen/verwijderen
- WeightChart now supports 30 and 365 days
- NewMeasurementScreen now handles both create and edit
- Updated README to match current code
- Add build-toolchain documentation
- Ignore *.apk build artifacts

App.tsx

@@ -5,8 +5,18 @@ import DashboardScreen from './src/screens/DashboardScreen'
 import NewMeasurementScreen from './src/screens/NewMeasurementScreen'
 import HistoryScreen from './src/screens/HistoryScreen'
 import SettingsScreen from './src/screens/SettingsScreen'
+import MeasurementDetailScreen from './src/screens/MeasurementDetailScreen'
+import { Measurement } from './src/types'
 
-const Stack = createNativeStackNavigator()
+type RootStackParamList = {
+  Dashboard: undefined
+  NewMeasurement: { measurement?: Measurement }
+  History: undefined
+  MeasurementDetail: { measurementId: string }
+  Settings: undefined
+}
+
+const Stack = createNativeStackNavigator<RootStackParamList>()
 
 export default function App() {
   return (
@@ -27,6 +37,11 @@ export default function App() {
           component={HistoryScreen}
           options={{ title: 'Historie' }}
         />
+        <Stack.Screen
+          name="MeasurementDetail"
+          component={MeasurementDetailScreen}
+          options={{ title: 'Meting' }}
+        />
         <Stack.Screen
           name="Settings"
           component={SettingsScreen}