chore: Fix dart deprecation messages

lib/util/absorb_events.dart

@@ -13,7 +13,7 @@ class AbsorbEvents extends ConsumerWidget {
         onDoubleTap: () {},
         onTap: () {},
         onLongPress: () {},
-        child: Container(color: Colors.black.withOpacity(0), child: child),
+        child: Container(color: Colors.black.withValues(alpha: 0), child: child),
       );
     } else {
       return child;

lib/util/color_extensions.dart

@@ -2,6 +2,37 @@ import 'package:flutter/material.dart';
 
 import 'package:fladder/util/localization_helper.dart';
 
+Color? colorFromJson(dynamic color) {
+  if (color == null) return null;
+
+  if (color is Map<String, dynamic>) {
+    return Color.from(
+      alpha: color['alpha'] ?? 1.0,
+      red: color['red'] ?? 1.0,
+      green: color['green'] ?? 1.0,
+      blue: color['blue'] ?? 1.0,
+    );
+  }
+
+  // Deprecated format (integer value)
+  if (color is int) {
+    return Color(color);
+  }
+
+  return null;
+}
+
+extension ColorExtensions on Color {
+  Map<String, dynamic> get toMap {
+    return {
+      'alpha': a,
+      'red': r,
+      'green': g,
+      'blue': b,
+    };
+  }
+}
+
 extension DynamicSchemeVariantExtension on DynamicSchemeVariant {
   String label(BuildContext context) => switch (this) {
         DynamicSchemeVariant.tonalSpot => context.localized.schemeSettingsTonalSpot,

lib/util/debug_banner.dart

@@ -29,7 +29,7 @@ class DebugBanner extends ConsumerWidget {
                   padding: const EdgeInsets.all(4.0),
                   child: Card(
                     shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(6)),
-                    color: Colors.purpleAccent.withOpacity(0.8),
+                    color: Colors.purpleAccent.withValues(alpha: 0.8),
                     child: Padding(
                       padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
                       child: Text(

lib/util/fab_extended_anim.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 class FloatingActionButtonAnimated extends ConsumerWidget {

lib/util/humanize_duration.dart

@@ -1,5 +1,3 @@
-import 'package:collection/collection.dart';
-
 extension DurationExtensions on Duration? {
   String? get humanize {
     if (this == null) return null;
@@ -7,7 +5,7 @@ extension DurationExtensions on Duration? {
     final hours = duration.inHours != 0 ? '${duration.inHours.toString()}h' : null;
     final minutes = duration.inMinutes % 60 != 0 ? '${duration.inMinutes % 60}m'.padLeft(3, '0') : null;
     final seconds = duration.inSeconds % 60 != 0 ? '${duration.inSeconds % 60}s'.padLeft(3, '0') : null;
-    final result = [hours, minutes, seconds].whereNotNull().map((e) => e).join(' ');
+    final result = [hours, minutes, seconds].nonNulls.map((e) => e).join(' ');
     return result.isNotEmpty ? result : null;
   }
 
@@ -18,7 +16,7 @@ extension DurationExtensions on Duration? {
     final minutes = (duration.inMinutes % 60).toString().padLeft(2, '0');
     final seconds = (duration.inHours == 0 ? duration.inSeconds % 60 : null)?.toString().padLeft(2, '0');
 
-    final result = [hours, minutes, seconds].whereNotNull().map((e) => e).join(':');
+    final result = [hours, minutes, seconds].nonNulls.map((e) => e).join(':');
     return result.isNotEmpty ? result : null;
   }
 

lib/util/keyed_list_view.dart

@@ -1,5 +1,6 @@
-import 'package:collection/collection.dart';
 import 'package:flutter/material.dart';
+
+import 'package:collection/collection.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:scrollable_positioned_list/scrollable_positioned_list.dart';
 
@@ -69,9 +70,12 @@ class _KeyedListViewState extends ConsumerState<KeyedListView> {
                     style: TextButton.styleFrom(
                       padding: EdgeInsets.zero,
                       textStyle: Theme.of(context).textTheme.titleSmall?.copyWith(fontWeight: FontWeight.bold),
+                      iconColor: atPosition
+                          ? Theme.of(context).colorScheme.onSecondary
+                          : Theme.of(context).colorScheme.onSurface.withValues(alpha: 0.35),
                       foregroundColor: atPosition
                           ? Theme.of(context).colorScheme.onSecondary
-                          : Theme.of(context).colorScheme.onSurface.withOpacity(0.35),
+                          : Theme.of(context).colorScheme.onSurface.withValues(alpha: 0.35),
                     ),
                     onPressed: () {
                       itemScrollController.scrollTo(

lib/util/mouse_parking.dart

@@ -24,7 +24,7 @@ class _MouseParkingState extends ConsumerState<MouseParking> {
         child: Container(
           decoration: BoxDecoration(
             borderRadius: const BorderRadius.only(topLeft: Radius.circular(20)),
-            color: parked ? Theme.of(context).colorScheme.primary.withOpacity(0.5) : Colors.black12,
+            color: parked ? Theme.of(context).colorScheme.primary.withValues(alpha: 0.5) : Colors.black12,
           ),
           child: const Row(
             mainAxisAlignment: MainAxisAlignment.center,

lib/util/string_extensions.dart

@@ -1,5 +1,3 @@
-import 'package:collection/collection.dart';
-
 import 'package:fladder/models/items/item_shared_models.dart';
 
 extension StringExtensions on String {
@@ -64,6 +62,6 @@ extension GenreExtensions on List<GenreItems> {
 
 extension StringListExtension on List<String?> {
   String get detailsTitle {
-    return whereNotNull().join(" ● ");
+    return nonNulls.join(" ● ");
   }
 }