auch einzelnutzer können sich registrieren

timetracker.Client/Components/Layout/NavMenu.razor

@@ -67,7 +67,7 @@
                         </div>
                         <div class="user-info">
                             <span class="user-name">@context.User.Identity?.Name</span>
-                            <span class="user-status">@_companyName</span>
+                            <span class="user-status">@GetUserStatus(context.User.Identity?.Name)</span>
                         </div>
                     </div>
                 </NavLink>
@@ -159,4 +159,12 @@
             return parts[0][..Math.Min(2, parts[0].Length)].ToUpper();
         return $"{parts[0][0]}{parts[1][0]}".ToUpper();
     }
+
+    private string GetUserStatus(string? username)
+    {
+        if (string.IsNullOrWhiteSpace(username)) return "";
+        if (username.Equals("marc", StringComparison.OrdinalIgnoreCase)) return "SuperAdmin";
+        if (_companyName == "Hauptdomain") return "Einzelnutzer";
+        return _companyName;
+    }
 }

timetracker.Client/Components/Pages/AdminUsers.razor

@@ -102,7 +102,7 @@ else
                                 else
                                 {
                                     <MudChip T="string" Color="Color.Default" Variant="Variant.Text" Size="Size.Small">
-                                        Hauptdomain (SuperUser)
+                                        @(context.Username == "marc" ? "SuperAdmin" : "Einzelnutzer")
                                     </MudChip>
                                 }
                             }

timetracker.Client/Components/Pages/Login.razor

@@ -91,6 +91,16 @@ else
                             Zurück zum Login
                         </MudButton>
                     </MudStack>
+                } else {
+                    @* ── Header / Navigation ── *@
+                    @if (_activeTab == 2)
+                    {
+                        @* ── Back Button for Firm Registration ── *@
+                        <MudStack Row="true" AlignItems="AlignItems.Center" Class="mb-4">
+                            <MudIconButton Icon="@Icons.Material.Filled.ArrowBack" OnClick="@(() => SetTab(0))" Color="Color.Primary" />
+                            <MudText Typo="Typo.h6" Style="font-weight:700">Firma registrieren</MudText>
+                        </MudStack>
+                        <MudDivider Class="mb-6" />
                     }
                     else
                     {
@@ -106,11 +116,11 @@ else
                                        Variant="@(_activeTab == 1 ? Variant.Filled : Variant.Text)"
                                        Color="Color.Primary"
                                        Style="min-width: 120px; border-radius: 20px;">
-                            @(_tenantInfo.IsTenant ? "Registrieren" : "Firma registrieren")
+                                Registrieren
                             </MudButton>
                         </MudStack>
-
                         <MudDivider Class="mb-6" />
+                    }
 
                     @if (_activeTab == 0)
                     {
@@ -156,7 +166,7 @@ else
                             </EditForm>
                         </MudStack>
                     }
-                    else
+                    else if (_activeTab == 1)
                     {
                         @if (_tenantInfo.IsTenant)
                         {
@@ -210,6 +220,66 @@ else
                             </MudStack>
                         }
                         else
+                        {
+                            @* ── Single User Register Form ── *@
+                            <MudStack Spacing="3">
+                                @if (_error != null)
+                                {
+                                    <MudAlert Severity="Severity.Error" Dense="true">@_error</MudAlert>
+                                }
+                                <EditForm Model="@_registerModel" OnValidSubmit="HandleSingleUserRegister">
+                                    <MudStack Spacing="3">
+                                        <MudTextField T="string"
+                                                      Label="Benutzername"
+                                                      Variant="Variant.Outlined"
+                                                      Adornment="Adornment.Start"
+                                                      AdornmentIcon="@Icons.Material.Filled.Person"
+                                                      @bind-Value="_registerModel.Username"
+                                                      Required="true"
+                                                      HelperText="Mindestens 3 Zeichen" />
+                                        <MudTextField T="string"
+                                                      Label="Passwort"
+                                                      Variant="Variant.Outlined"
+                                                      Adornment="Adornment.Start"
+                                                      AdornmentIcon="@Icons.Material.Filled.Lock"
+                                                      InputType="InputType.Password"
+                                                      @bind-Value="_registerModel.Password"
+                                                      Required="true"
+                                                      HelperText="Mindestens 6 Zeichen" />
+                                        <MudTextField T="string"
+                                                      Label="Passwort wiederholen"
+                                                      Variant="Variant.Outlined"
+                                                      Adornment="Adornment.Start"
+                                                      AdornmentIcon="@Icons.Material.Filled.Lock"
+                                                      InputType="InputType.Password"
+                                                      @bind-Value="_confirmPassword"
+                                                      Required="true" />
+                                        <input type="text" style="display: none;" tabindex="-1" autocomplete="off" @bind="_honeypot" />
+                                        
+                                        <MudCheckBox @bind-Value="_acceptAgb" Color="Color.Secondary" Class="mt-1">
+                                            <MudText Typo="Typo.body2">Ich akzeptiere die <a href="/agb" target="_blank" style="color: var(--mud-palette-secondary); text-decoration: underline; font-weight: 600;">AGB</a>.</MudText>
+                                        </MudCheckBox>
+
+                                        <MudButton ButtonType="ButtonType.Submit"
+                                                   Variant="Variant.Filled"
+                                                   Color="Color.Secondary"
+                                                   FullWidth="true"
+                                                   Size="Size.Large"
+                                                   StartIcon="@Icons.Material.Filled.PersonAdd"
+                                                   Class="mt-2"
+                                                   Disabled="_loading || !_acceptAgb">
+                                            @if (_loading)
+                                            {
+                                                <MudProgressCircular Size="Size.Small" Indeterminate="true" Class="mr-2" />
+                                            }
+                                            Konto erstellen
+                                        </MudButton>
+                                    </MudStack>
+                                </EditForm>
+                            </MudStack>
+                        }
+                    }
+                    else if (_activeTab == 2)
                     {
                         @* ── Firm Register Form ── *@
                         <MudStack Spacing="3">
@@ -288,6 +358,18 @@ else
                             </EditForm>
                         </MudStack>
                     }
+
+                    @if (!_tenantInfo.IsTenant && _activeTab != 2)
+                    {
+                        <MudDivider Class="my-4" />
+                        <MudStack AlignItems="AlignItems.Center">
+                            <MudText Typo="Typo.body2" Color="Color.Secondary">
+                                Sie möchten Timetracker für Ihr Unternehmen nutzen?
+                            </MudText>
+                            <MudButton Variant="Variant.Text" Color="Color.Primary" OnClick="@(() => SetTab(2))" StartIcon="@Icons.Material.Filled.Business">
+                                Eigene Firma registrieren
+                            </MudButton>
+                        </MudStack>
                     }
                 }
             </MudPaper>
@@ -303,6 +385,7 @@ else
     private string _honeypot = "";
     private bool _acceptAgb;
     private bool _firmRegisteredSuccessfully;
+    private string _confirmPassword = "";
 
     private readonly AuthModel _loginModel = new();
     private readonly AuthModel _registerModel = new();
@@ -432,6 +515,44 @@ else
         }
     }
 
+    private async Task HandleSingleUserRegister()
+    {
+        if (!_acceptAgb)
+        {
+            _error = "Du musst die AGB akzeptieren.";
+            return;
+        }
+        if (_registerModel.Password != _confirmPassword)
+        {
+            _error = "Passwörter stimmen nicht überein.";
+            return;
+        }
+
+        _loading = true;
+        _error = null;
+        try
+        {
+            var (user, error) = await AuthService.RegisterAsync(_registerModel.Username, _registerModel.Password, _honeypot);
+            if (user != null)
+            {
+                await JSRuntime.InvokeVoidAsync("localStorage.setItem", "showOnboarding", "true");
+                Nav.NavigateTo("/", forceLoad: true);
+            }
+            else
+            {
+                _error = error ?? "Registrierung fehlgeschlagen.";
+            }
+        }
+        catch (Exception ex)
+        {
+            _error = $"Registrierungs Fehler: {ex.Message}";
+        }
+        finally
+        {
+            _loading = false;
+        }
+    }
+
     private async Task HandleRegisterFirm()
     {
         if (!_acceptAgb)

timetracker.Server/Data/AuthService.cs

@@ -97,15 +97,15 @@ public class AuthService(
             return (null, "Passwort muss mindestens 6 Zeichen lang sein.");
 
         var tenantId = tenantProvider.TenantId;
-        if (tenantId == null)
+        if (tenantId == null && username.Equals("marc", StringComparison.OrdinalIgnoreCase))
         {
-            return (null, "Mitarbeiter-Registrierung ist nur über die Firmen-Subdomain möglich.");
+            return (null, "Dieser Benutzername ist reserviert.");
         }
 
         await using var db = await factory.CreateDbContextAsync();
-        // Filter handles checking uniqueness within the same tenant
+        // Filter handles checking uniqueness within the same tenant context
         if (await db.Users.AnyAsync(u => u.Username == username))
-            return (null, "Benutzername in dieser Firma bereits vergeben.");
+            return (null, tenantId.HasValue ? "Benutzername in dieser Firma bereits vergeben." : "Benutzername bereits vergeben.");
 
         var (hash, salt) = HashPassword(password);
         var user = new User 
@@ -113,7 +113,7 @@ public class AuthService(
             Username = username, 
             PasswordHash = hash, 
             PasswordSalt = salt,
-            TenantId = tenantId.Value
+            TenantId = tenantId
         };
         db.Users.Add(user);
         await db.SaveChangesAsync();

timetracker.Server/Program.cs

@@ -219,9 +219,9 @@ app.MapPost("/api/auth/login", async (HttpContext ctx, [FromBody] LoginRequest r
     }
     else
     {
-        if (user.Username != "marc")
+        if (user.Username != "marc" && user.TenantId != null)
         {
-            return Results.BadRequest("Anmeldung auf der Hauptdomain nur für Administratoren.");
+            return Results.BadRequest("Benutzer gehört zu einer Firma. Bitte melden Sie sich über Ihre Firmen-Subdomain an.");
         }
     }