fix: Add View parameter to onAdminAreaTap

XML onClick handlers require a View parameter. Missing parameter
was causing crash when triple-tapping admin area.

Fixes admin settings access crash on tap.

app/src/main/kotlin/farm/hobbs/kioskbrowser/MainActivity.kt

@@ -187,7 +187,8 @@ class MainActivity : AppCompatActivity() {
     private var tapCount = 0
     private val tapHandler = Handler(Looper.getMainLooper())
     
-    fun onAdminAreaTap() {
+    // Note: View parameter required for XML onClick handler
+    fun onAdminAreaTap(view: View) {
         tapCount++
         tapHandler.removeCallbacksAndMessages(null)
         tapHandler.postDelayed({ tapCount = 0 }, 500)