improve image lifecycle handling

app/lib/presentation/widgets/safe_raw_image.dart

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2024-2026 Fabian Freund.
+ *
+ * This file is part of WebLibre
+ * (see https://weblibre.eu).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+import 'package:flutter/widgets.dart';
+import 'package:weblibre/domain/entities/equatable_image.dart';
+
+/// A safe wrapper around [RawImage] that guards against disposed images.
+///
+/// Checks [EquatableImage.isDisposed] before rendering. When the image
+/// is null or disposed, renders [fallback] (defaults to an empty SizedBox
+/// matching the requested dimensions).
+class SafeRawImage extends StatelessWidget {
+  final EquatableImage? image;
+  final double? width;
+  final double? height;
+  final BoxFit? fit;
+  final Widget? fallback;
+
+  const SafeRawImage({
+    super.key,
+    required this.image,
+    this.width,
+    this.height,
+    this.fit,
+    this.fallback,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final uiImage = image?.value;
+
+    if (uiImage == null) {
+      return fallback ?? SizedBox(width: width, height: height);
+    }
+
+    return RawImage(
+      image: uiImage,
+      width: width,
+      height: height,
+      fit: fit,
+    );
+  }
+}

app/lib/presentation/widgets/url_icon.dart

@@ -24,6 +24,7 @@ import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:skeletonizer/skeletonizer.dart';
 import 'package:weblibre/domain/services/generic_website.dart';
 import 'package:weblibre/presentation/hooks/cached_future.dart';
+import 'package:weblibre/presentation/widgets/safe_raw_image.dart';
 
 class UrlIcon extends HookConsumerWidget {
   final double iconSize;
@@ -46,11 +47,12 @@ class UrlIcon extends HookConsumerWidget {
         dimension: iconSize,
         child: (icon.data != null)
             ? RepaintBoundary(
-                child: RawImage(
-                  image: icon.data?.image.value,
+                child: SafeRawImage(
+                  image: icon.data?.image,
                   height: iconSize,
                   width: iconSize,
                   fit: BoxFit.fill,
+                  fallback: Icon(MdiIcons.web, size: iconSize),
                 ),
               )
             : Icon(MdiIcons.web, size: iconSize),

app/lib/presentation/widgets/website_title_tile.dart

@@ -25,6 +25,7 @@ import 'package:skeletonizer/skeletonizer.dart';
 import 'package:weblibre/features/geckoview/domain/entities/states/tab.dart';
 import 'package:weblibre/presentation/controllers/website_title.dart';
 import 'package:weblibre/presentation/widgets/failure_widget.dart';
+import 'package:weblibre/presentation/widgets/safe_raw_image.dart';
 import 'package:weblibre/presentation/widgets/uri_breadcrumb.dart';
 
 class WebsiteTitleTile extends HookConsumerWidget {
@@ -45,10 +46,11 @@ class WebsiteTitleTile extends HookConsumerWidget {
             leading: RepaintBoundary(
               child:
                   info.favicon.mapNotNull(
-                    (favicon) => RawImage(
-                      image: favicon.image.value,
+                    (favicon) => SafeRawImage(
+                      image: favicon.image,
                       height: 24,
                       width: 24,
+                      fallback: const Icon(MdiIcons.web, size: 24),
                     ),
                   ) ??
                   const Icon(MdiIcons.web, size: 24),
@@ -71,8 +73,8 @@ class WebsiteTitleTile extends HookConsumerWidget {
           );
         },
         loading: () => ListTile(
-          leading: RawImage(
-            image: initialTabState.favicon?.image.value,
+          leading: SafeRawImage(
+            image: initialTabState.favicon?.image,
             height: 24,
             width: 24,
           ),