Add: Ticket Benutzer-Filter, Dropdown-Styling, User Model Felder fix

backend/src/models/User.js

@@ -8,6 +8,8 @@ class User {
                 u.id, u.username, u.email, u.first_name, u.last_name,
                 u.is_active, u.must_change_password, u.email_notifications, u.last_login,
                 u.created_at, u.updated_at, u.role_id, u.azure_id,
+                u.department, u.position, u.phone, u.location, u.manager_id,
+                u.cost_center, u.employment_type, u.work_hours, u.joined_date, u.avatar_url,
                 r.name as role_name, r.description as role_description
             FROM users u
             LEFT JOIN roles r ON u.role_id = r.id
@@ -23,6 +25,8 @@ class User {
                 u.id, u.username, u.email, u.first_name, u.last_name,
                 u.is_active, u.must_change_password, u.email_notifications, u.last_login,
                 u.created_at, u.updated_at, u.role_id, u.azure_id,
+                u.department, u.position, u.phone, u.location, u.manager_id,
+                u.cost_center, u.employment_type, u.work_hours, u.joined_date, u.avatar_url,
                 r.name as role_name, r.description as role_description
             FROM users u
             LEFT JOIN roles r ON u.role_id = r.id