Shrink the Android app with R8

app/android/app/build.gradle

@@ -24,9 +24,13 @@ android {
             applicationIdSuffix ".test"
             versionNameSuffix "-test"
         }
+        // R8 shrinks and optimizes the native part (Google Play asks for it). Capacitor's own rules
+        // keep every plugin class, which the bridge finds by reflection. The mapping file goes into
+        // the app bundle, so Play shows crash reports with the real class and method names.
         release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
     // On Codemagic the upload key comes in through these variables (codemagic.yaml); without them,

app/android/app/proguard-rules.pro

@@ -14,8 +14,8 @@
 
 # Uncomment this to preserve the line number information for
 # debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
+-keepattributes SourceFile,LineNumberTable
 
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
-#-renamesourcefileattribute SourceFile
+-renamesourcefileattribute SourceFile

app/android/app/src/main/AndroidManifest.xml

@@ -13,6 +13,9 @@
         <!-- localeConfig: the app's language can be chosen in Android's settings (13 and later), like
              any app's. No "locale" in configChanges below: choosing one restarts the app, and the
              page comes back in the new language. -->
+        <!-- screenOrientation portrait: on a phone held sideways the scene and both bar rows don't fit.
+             Android 16 ignores it on tablets and foldables, where the page stands as a column in the
+             middle and works either way. Google Play warns about it; the warning is kept on purpose. -->
 
         <activity
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|screenLayout|uiMode|navigation|density"