fix: some warnings remove + light / ugly theme added

lib/views/widgets/closed_tab_card.dart

@@ -6,7 +6,7 @@ import 'package:kooltab2/models/closed_tab_item.dart';
 class ClosedTabCard extends StatefulWidget {
   final ClosedTab closedTab;
 
-  const ClosedTabCard({required this.closedTab});
+  const ClosedTabCard({super.key, required this.closedTab});
 
   @override
   State<ClosedTabCard> createState() => _ClosedTabCardState();

lib/views/widgets/product_tile.dart

@@ -10,6 +10,7 @@ class ProductTile extends StatelessWidget {
   static const _tileImageSize = 280.0;
 
   const ProductTile({
+    super.key,
     required this.product,
     required this.enabled,
     required this.onTap,
@@ -25,8 +26,7 @@ class ProductTile extends StatelessWidget {
         product.stockQuantity > 0 &&
         product.stockQuantity <= product.lowStockThreshold;
 
-    final hasImage = product.imagePath != null &&
-        product.imagePath!.isNotEmpty;
+    final hasImage = product.imagePath != null && product.imagePath!.isNotEmpty;
 
     final borderColor = outOfStock
         ? scheme.error.withValues(alpha: 0.7)
@@ -58,8 +58,8 @@ class ProductTile extends StatelessWidget {
                           File(product.imagePath!),
                           fit: BoxFit.scaleDown,
                           cacheWidth: _tileImageSize.toInt(),
-                          errorBuilder:
-                              (context, error, stackTrace) => _noImage(scheme),
+                          errorBuilder: (context, error, stackTrace) =>
+                              _noImage(scheme),
                         )
                       : _noImage(scheme),
                 ),

lib/views/widgets/slide_confirm.dart

@@ -3,7 +3,7 @@ import 'package:flutter/material.dart';
 class SlideConfirm extends StatefulWidget {
   final VoidCallback onConfirmed;
 
-  const SlideConfirm({required this.onConfirmed});
+  const SlideConfirm({super.key, required this.onConfirmed});
 
   @override
   State<SlideConfirm> createState() => _SlideConfirmState();