feature(mobile): allow app to be used offline (#1932)

* feature(mobile): allow app to be used offline

* translatable server/network error message

* adjust profile drawer error message

* call getAllAsset after cold app starts

* fix analyzer error

* update asset state if length differs

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Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/modules/search/ui/thumbnail_with_info.dart

@@ -53,6 +53,8 @@ class ThumbnailWithInfo extends StatelessWidget {
                           httpHeaders: {
                             "Authorization": "Bearer ${box.get(accessTokenKey)}"
                           },
+                          errorWidget: (context, url, error) =>
+                              const Icon(Icons.image_not_supported_outlined),
                         ),
                       )
                     : Center(

mobile/lib/modules/search/views/search_result_page.dart

@@ -119,7 +119,10 @@ class SearchResultPage extends HookConsumerWidget {
           settings.getSetting(AppSettingsEnum.storageIndicator);
 
       if (searchResultPageState.isError) {
-        return const Text("Error");
+        return Padding(
+          padding: const EdgeInsets.all(12),
+          child: const Text("common_server_error").tr(),
+        );
       }
 
       if (searchResultPageState.isLoading) {