fixed client login and changed qt6 lib

server/app/templates/users/form.html

@@ -25,8 +25,7 @@
                         <label class="form-label">Benutzername *</label>
                         <input type="text" class="form-control" name="username" required
                                value="{{ user.username if user else '' }}"
-                               placeholder="benutzername"
-                               {{ 'readonly' if user else '' }}>
+                               placeholder="benutzername">
                     </div>
 
                     <div class="mb-3">
@@ -61,13 +60,15 @@
                         </select>
                     </div>
 
-                    {% if current_user.is_super_admin and not user %}
+                    {% if current_user.is_super_admin %}
                     <div class="mb-3">
                         <label class="form-label">Mandant</label>
                         <select class="form-select" name="tenant_id">
                             <option value="">Kein Mandant (Super Admin)</option>
                             {% for tenant in tenants %}
-                            <option value="{{ tenant.id }}">{{ tenant.name }}</option>
+                            <option value="{{ tenant.id }}" {{ 'selected' if user and user.tenant_id == tenant.id }}>
+                                {{ tenant.name }}
+                            </option>
                             {% endfor %}
                         </select>
                     </div>