- Replace alert() with ToastService in admin-user-approval and admin-energy-community
- Remove all console.error/console.warn statements from components and guards
- Fix admin-energy-community modal title (now shows 'Bearbeiten' in edit mode)
- Fix admin-user-approval table header ('Zählpunkt' -> 'Status')
- Remove broken header nav links (#so-gehts, #faq) that pointed to non-existent sections