fix: resolve FloatingUIActivity crash on startup

- Move setupTransparentOverlay() from onCreate to onResume to avoid null window
- Add try-catch block to handle WindowInsetsController access errors
- Add null-safety checks for window operations
- Prevent crash when accessing insetsController before window is ready

Fixes: NullPointerException when accessing WindowInsetsController
Error: 'getWindowInsetsController()' on a null object reference

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

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

app/src/main/java/com/quillstudios/pokegoalshelper/ui/FloatingUIActivity.kt

@@ -74,9 +74,6 @@ class FloatingUIActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         
-        // Make activity transparent and overlay-capable
-        setupTransparentOverlay()
-        
         // Bind to the ScreenCaptureService
         bindToScreenCaptureService()
         
@@ -92,6 +89,12 @@ class FloatingUIActivity : ComponentActivity() {
         }
     }
     
+    override fun onResume() {
+        super.onResume()
+        // Setup overlay after window is fully initialized
+        setupTransparentOverlay()
+    }
+    
     override fun onDestroy() {
         super.onDestroy()
         if (serviceBound) {
@@ -101,8 +104,9 @@ class FloatingUIActivity : ComponentActivity() {
     }
     
     private fun setupTransparentOverlay() {
+        try {
             // Make the activity transparent and fullscreen
-        window.apply {
+            window?.apply {
                 // Hide system UI (navigation bar, status bar)
                 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.R) {
                     setDecorFitsSystemWindows(false)
@@ -139,6 +143,10 @@ class FloatingUIActivity : ComponentActivity() {
                 setType(WindowManager.LayoutParams.TYPE_PHONE)
             }
             }
+        } catch (e: Exception) {
+            Log.e(TAG, "Error setting up transparent overlay", e)
+            // Continue without overlay setup if it fails
+        }
     }
     
     private fun bindToScreenCaptureService() {