Transitions UI to react.js

Co-authored-by: Copilot <copilot@github.com>

README.md

@@ -1,3 +1,48 @@
 # kryz-go
 
-KRYZ Go! Mobile radio app
+KRYZ Go! mobile radio app built with Next.js + React and packaged with Capacitor.
+
+## Stack
+
+- Next.js (App Router, static export)
+- React
+- Capacitor (Android and iOS)
+- `@anuradev/capacitor-background-mode` for improved background playback reliability
+
+## Install
+
+```bash
+npm install
+```
+
+## Develop Frontend
+
+```bash
+npm run dev
+```
+
+## Build Web Assets For Capacitor
+
+```bash
+npm run build
+```
+
+This exports static files into `out/`, which is the Capacitor `webDir`.
+
+## Sync Native Projects
+
+```bash
+npm run sync
+```
+
+## Run Android
+
+```bash
+npm run android
+```
+
+## Open Android Studio
+
+```bash
+npm run open:android
+```