Phase 1: minimal Kotlin Android app shows Hub /health

Scaffold the Android Gradle project under android/ mirroring the proven
internet_use_control toolchain: Gradle wrapper 8.11.1, AGP 8.7.3, Kotlin
2.0.21, compileSdk/targetSdk 35, Java/Kotlin 17, minSdk 29 (AGENTS.md §9).

One Activity calls GET http://192.168.20.13:8788/health off the main thread
and renders ok, service, version and every checks value plus the raw body.
INTERNET permission and usesCleartextTraffic are declared for the LAN Hub.
A failed or non-2xx call renders an explicit error line and never reports
success (AGENTS.md §10 rule 4).

applicationId au.audasmedia.hub.phone, versionName 0.1.0-phase1.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

android/settings.gradle.kts

@@ -0,0 +1,23 @@
+// Kotlin Phone App + Admin — Sam's Android app (AGENTS.md §11 Phase 1).
+//
+// The toolchain is NOT on .13. `~/android/build.sh kotlin_phone_app_admin` on
+// .27 pulls this repo from Gitea and runs `./gradlew assembleDebug` in this
+// directory. Toolchain versions mirror the proven internet_use_control project.
+pluginManagement {
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "HubPhone"
+include(":app")