- add helpdesk module pages, services, settings and tests
- standardize debtor list on drawer/grid contracts and robust filter drawer behavior
- add helpdesk aside panel navigation and settings visibility provider
- switch primary list slug to helpdesk/debitor and remove helpdesk/search compatibility
- include required core contract updates for list contracts and detail/drawer integration
- Add icanhazstring/composer-unused as dev dependency for dependency hygiene checks
- Add German documentation (docs/) covering architecture, conventions, workflows, and developer checklists
- Add API layer (ApiAuth, ApiBootstrap, ApiResponse), audit, scheduler, custom fields, and SSO services
- Add Microsoft OIDC SSO, API token management, and user lifecycle features
- Add swagger-ui vendor integration and OpenAPI spec
- Add production Docker setup and bin/ scripts
- Update composer dependencies, config, templates, and frontend assets throughout
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>