Allow OS notifications

android/app/build.gradle.kts

@@ -13,6 +13,9 @@ android {
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17
+        // required by flutter_local_notifications and other libraries using
+        // Java 8+ APIs at runtime
+        isCoreLibraryDesugaringEnabled = true
     }
 
     kotlinOptions {
@@ -37,6 +40,14 @@ android {
             signingConfig = signingConfigs.getByName("debug")
         }
     }
+
+    // allow desugaring of Java 8+ library APIs
+
+}
+
+// dependencies section for additional compile-only libraries
+dependencies {
+    coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.1.4")
 }
 
 flutter {

android/app/src/main/AndroidManifest.xml

@@ -2,6 +2,10 @@
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
     <uses-permission android:name="android.permission.INTERNET" />
+    <!-- Required on Android 13+ to post notifications. Without this the system
+         will automatically block notifications and the user cannot enable them
+         from settings. -->
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
     <application
         android:label="tasq"
         android:name="${applicationName}"