feat(postit): show a live published badge beside blog post titles

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

CHANGELOG.md

@@ -5,6 +5,8 @@
 
 ### Added
 
+* [PostIt] Badge « Publié » à côté du titre des billets publiés dans la
+  liste, mis à jour lors de la publication ou du retour en brouillon.
 * [PostIt] Gestion native du compte inspirée de `/Manage` : modification
   du nom d'utilisateur, du nom complet et de l'adresse, téléversement
   d'avatar, confirmation e-mail, préférence de courriel mensuel,

src/PostIt/PostIt/Views/Blogs/BlogsPage.axaml

@@ -126,7 +126,27 @@
             <ListBox.ItemTemplate>
               <DataTemplate x:DataType="models:BlogPostDto">
                 <StackPanel Spacing="4">
-                  <TextBlock FontWeight="SemiBold" Text="{Binding Title}" />
+                  <StackPanel Orientation="Horizontal" Spacing="8">
+                    <TextBlock
+                      VerticalAlignment="Center"
+                      FontWeight="SemiBold"
+                      Text="{Binding Title}" />
+                    <Border
+                      x:Name="PublishedBadge"
+                      VerticalAlignment="Center"
+                      Padding="6,2"
+                      Background="#F2F7F2"
+                      BorderBrush="#2F6D2F"
+                      BorderThickness="1"
+                      CornerRadius="6"
+                      IsVisible="{Binding IsPublished}">
+                      <TextBlock
+                        FontSize="10"
+                        FontWeight="SemiBold"
+                        Foreground="#2F6D2F"
+                        Text="Publié" />
+                    </Border>
+                  </StackPanel>
                   <TextBlock
                     FontSize="10"
                     Foreground="Gray"

src/Yavsc.Abstract/Blogspot/BlogPostDto.cs

@@ -1,12 +1,16 @@
 #nullable enable annotations
 
 using Yavsc.Abstract.Identity.Security;
+using System.ComponentModel;
 using System.Text.Json.Serialization;
 
 namespace Yavsc.Blogspot;
 
-public class BlogPostDto : IBlogPost
+public class BlogPostDto : IBlogPost, INotifyPropertyChanged
 {
+    public event PropertyChangedEventHandler? PropertyChanged;
+    private bool _isPublished;
+
     public string AuthorId { get; set; }
 
     public BlogPostAuthorDto? Author { get; set; }
@@ -30,7 +34,18 @@ public class BlogPostDto : IBlogPost
     /// follow-up request. Toggled via
     /// <c>PUT /api/BlogApi/{id}/publish</c>.
     /// </summary>
-    public bool IsPublished { get; set; }
+    public bool IsPublished
+    {
+        get => _isPublished;
+        set
+        {
+            if (_isPublished == value)
+                return;
+
+            _isPublished = value;
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(IsPublished)));
+        }
+    }
 
     public virtual bool AuthorizeCircle(long circleId)
     {