build: establish Android beta packaging

apps/mobile/android/app/build.gradle

@@ -4,6 +4,9 @@ plugins {
     id 'org.jetbrains.kotlin.plugin.compose'
 }
 
+def betaVersionName = '0.1.0-beta.1'
+def betaVersionCode = 10001
+
 android {
     namespace 'cloud.molberg.hermesmobile'
     compileSdk 35
@@ -12,8 +15,9 @@ android {
         applicationId 'cloud.molberg.hermesmobile'
         minSdk 23
         targetSdk 35
-        versionCode 2
-        versionName '0.2.0-native'
+        versionCode betaVersionCode
+        versionName betaVersionName
+        setProperty('archivesBaseName', "hermes-mobile-v${betaVersionName}")
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
@@ -34,6 +38,7 @@ android {
     }
 
     buildFeatures {
+        buildConfig true
         compose true
     }
 }

apps/mobile/android/app/src/test/java/cloud/molberg/hermesmobile/BetaPackageMetadataTest.kt

@@ -0,0 +1,13 @@
+package cloud.molberg.hermesmobile
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+class BetaPackageMetadataTest {
+    @Test
+    fun generatedMetadataMatchesFirstBetaIdentity() {
+        assertEquals("cloud.molberg.hermesmobile", BuildConfig.APPLICATION_ID)
+        assertEquals("0.1.0-beta.1", BuildConfig.VERSION_NAME)
+        assertEquals(10001, BuildConfig.VERSION_CODE)
+    }
+}