Fix: add @namespace to MultiLangInput so Blazor can recognize the component class

Components/Shared/MultiLangInput.razor

@@ -1,7 +1,20 @@
+@namespace ECommerce.Module.Components.Shared
 @using System.Globalization
 
 <div class="space-y-2">
-    <div>DEBUG: ActiveCulture=@ActiveCulture, HideTabs=@HideTabs, IsTextArea=@IsTextArea</div>
+    @if (!HideTabs)
+    {
+        <div class="flex flex-wrap gap-2 mb-2">
+            @foreach (var culture in SupportedCultures)
+            {
+                <button type="button" @onclick="() => SelectCulture(culture.Key)"
+                    class="btn btn-sm @(ActiveCulture == culture.Key ? "btn-primary" : "btn-ghost")">
+                    @culture.Value
+                </button>
+            }
+        </div>
+    }
+
     <div class="relative">
         @if (IsTextArea)
         {
@@ -14,6 +27,13 @@
                 placeholder="@(Placeholder)" />
         }
     </div>
+
+    @if (Value != null && Value.ContainsKey(ActiveCulture))
+    {
+        <div class="text-xs opacity-50 text-right">
+            Chars: @Value[ActiveCulture].Length
+        </div>
+    }
 </div>
 
 @code {
@@ -27,12 +47,12 @@
     [Parameter] public bool HideTabs { get; set; } = false;
 
     private static readonly Dictionary<string, string> SupportedCultures = new()
-    {
-        { "en", "English" },
-        { "ar", "العربية" },
-        { "es", "Español" },
-        { "de", "Deutsch" }
-    };
+{
+{ "en", "English" },
+{ "ar", "العربية" },
+{ "es", "Español" },
+{ "de", "Deutsch" }
+};
 
     protected override void OnInitialized()
     {