fix: open the user menu on click of the initials (MudBlazor 9 custom activator)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/FamilyPlanner.Web.Client/Layout/UserMenu.razor

@@ -5,8 +5,8 @@
 <AuthorizeView>
     <Authorized Context="auth">
         <MudMenu AnchorOrigin="Origin.BottomRight" TransformOrigin="Origin.TopRight" aria-label="Benutzermenü">
-            <ActivatorContent>
-                <div class="fp-user-avatar" style="cursor:pointer">
+            <ActivatorContent Context="menu"> @* MudBlazor 9: ein eigener Aktivator muss MenuContext.ToggleAsync aufrufen, sonst öffnet sich nichts (Tastatur übernimmt MudMenu) *@
+                <div class="fp-user-avatar" style="cursor:pointer" @onclick="e => menu.ToggleAsync(e)">
                     <UserAvatarView Name="@DisplayNameOf(auth.User)" Color="@ColorOf(auth.User)" AvatarUrl="@AuthState.CurrentUser?.AvatarUrl" />
                 </div>
             </ActivatorContent>

tests/FamilyPlanner.Web.Tests/Account/UserMenuHost.razor

@@ -0,0 +1,3 @@
+@* Testhülle: MudBlazor-Popover-Provider + Benutzermenü, damit das geöffnete Menü gerendert wird. *@
+<MudPopoverProvider />
+<FamilyPlanner.Web.Client.Layout.UserMenu />

tests/FamilyPlanner.Web.Tests/Account/UserMenuTests.cs

@@ -0,0 +1,50 @@
+using FamilyPlanner.Domain;
+using FamilyPlanner.Shared.Auth;
+using FamilyPlanner.Web.Client.Auth;
+using FamilyPlanner.Web.Client.Services;
+using Microsoft.Extensions.DependencyInjection;
+using MudBlazor.Services;
+
+namespace FamilyPlanner.Web.Tests.Account;
+
+/// <summary>Klick auf die eigenen Initialen öffnet das Benutzermenü (MudBlazor 9: eigener Aktivator muss <c>ToggleAsync</c> aufrufen).</summary>
+public sealed class UserMenuTests : BunitContext
+{
+    public UserMenuTests()
+    {
+        JSInterop.Mode = JSRuntimeMode.Loose;
+        Services.AddMudServices();
+        var auth = AddAuthorization();
+        auth.SetAuthorized("Mia");
+        auth.SetRoles(Roles.Family);
+        Services.AddSingleton<IAuthService, NoopAuthService>();
+        Services.AddSingleton<ApiAuthenticationStateProvider>();
+    }
+
+    [Fact]
+    public void Clicking_the_initials_opens_the_menu_with_settings_password_and_logout()
+    {
+        var cut = Render<UserMenuHost>();
+
+        cut.Find(".fp-user-avatar").Click();
+
+        cut.WaitForAssertion(() =>
+        {
+            var items = cut.FindAll(".mud-menu-item").Select(i => i.TextContent.Trim()).ToList();
+            Assert.Contains("Meine Einstellungen", items);
+            Assert.Contains("Passwort ändern", items);
+            Assert.Contains("Abmelden", items);
+        });
+    }
+
+    private sealed class NoopAuthService : IAuthService
+    {
+        public Task<CurrentUserDto?> GetCurrentUserAsync(CancellationToken cancellationToken = default) => Task.FromResult<CurrentUserDto?>(null);
+
+        public Task<AuthResult> LoginAsync(LoginRequest request, CancellationToken cancellationToken = default) => throw new NotSupportedException();
+
+        public Task LogoutAsync(CancellationToken cancellationToken = default) => Task.CompletedTask;
+
+        public Task<AuthResult> ChangePasswordAsync(ChangePasswordRequest request, CancellationToken cancellationToken = default) => throw new NotSupportedException();
+    }
+}