Voeg thema-selector toe (DayNight, Radiogroep, teal accent)

android/app/build.gradle

@@ -5,6 +5,9 @@ plugins {
 
 android {
     namespace 'com.eddy.atomrelay'
+    // compileSdk/targetSdk stays on 34 (Android 14) by deliberate choice. The target audience
+    // consists of physically disabled users who are very reluctant to update their phones. Staying
+    // on API 34 maximises device compatibility. Re-evaluate when the user base has migrated.
     compileSdk 34
 
     defaultConfig {