Update app to load SilverDesk staging URL

Changed target URL from admin.dark.side to silverdesk-staging.silverlabs.uk

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/src/main/kotlin/uk/silverlabs/silverdroid/MainActivity.kt

@@ -20,8 +20,8 @@ import uk.silverlabs.silverdroid.ui.webview.WasmWebView
 class MainActivity : ComponentActivity() {
 
     // Direct load configuration
-    private val targetUrl = "https://admin.dark.side"
-    private val appName = "Dark Side Admin"
+    private val targetUrl = "https://silverdesk-staging.silverlabs.uk/"
+    private val appName = "SilverDesk Staging"
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)