fix: name a prod flavor so the real app stays buildable

android/app/build.gradle.kts

@@ -39,6 +39,13 @@ android {
 
     flavorDimensions += "test"
     productFlavors {
+        // The real app: the identity the alpha testers hold, no suffix.
+        // With a flavor dimension every build must name its flavor, so
+        // shipping builds are `flutter build apk --flavor prod`.
+        create("prod") {
+            dimension = "test"
+        }
+        // The patrol test app, installed beside — never over — the real one.
         create("integration") {
             dimension = "test"
             applicationIdSuffix = ".integration"