Add admin docs and Android admin scaffold

android-admin/README.md

@@ -0,0 +1,18 @@
+# Admin Android App
+
+Android (Kotlin + Jetpack Compose) admin client for the local-network Firmware Chat server.
+
+## Features
+
+- Configure `Base URL` (e.g. `http://192.168.88.2:8787`)
+- Store `ADMIN_TOKEN` securely (EncryptedSharedPreferences)
+- View/search logs, open log detail
+- View stats summary
+
+## Build / Run
+
+Open `android-admin/` in Android Studio and run the `app` configuration.
+
+## Note
+
+This repo does not include `gradle-wrapper.jar` (Android Studio will generate/sync it).