Wire up file size

Wallet.Avalonia/AttachmentEntryView.axaml

@@ -1,6 +1,7 @@
 <SettingsExpanderItem
     x:Class="Wallet.Avalonia.AttachmentEntryView"
     xmlns="https://github.com/avaloniaui"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-    Welcome to Avalonia!
-</SettingsExpanderItem>
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:vm="using:Wallet"
+    x:DataType="vm:LocalAttachmentEntryViewModel"
+    Description="{Binding Size, Converter={FileSizeNameConverter}}" />

Wallet/AttachmentEntryCollectionViewModel.cs

@@ -31,7 +31,7 @@ public partial class AttachmentEntryCollectionViewModel(IServiceProvider provide
                 string path = file.Path;
                 DateTimeOffset created = DateTimeOffset.Now;
                 string name = file.Name;
-                int size = file.Size;
+                long size = file.Size;
 
                 Attachment attachment = new()
                 {

Wallet/LocalAttachmentEntryViewModel.cs

@@ -11,7 +11,7 @@ public partial class LocalAttachmentEntryViewModel(IServiceProvider provider,
     IDisposer disposer,
     string path,
     DateTimeOffset created,
-    int size,
+    long size,
     string name) : Observable(provider, factory, mediator, publisher, subscriber, disposer),
     IAttachmentEntryViewModel
 {
@@ -22,7 +22,7 @@ public partial class LocalAttachmentEntryViewModel(IServiceProvider provider,
     private string path = path;
 
     [ObservableProperty]
-    private int size = size;
+    private long size = size;
 
     [ObservableProperty]
     private string name = name;