- Add protocols for all UseCases and implement them in their respective classes
- Add DefaultUseCaseFactory and MockUseCaseFactory for dependency injection
- Implement all mock UseCases with dummy data
- Start migration of view models and views to protocol-based UseCase injection (not all migrated yet)
- Refactor previews and some initializers for easier testing
- Move SectionHeader to Components, update server settings UI text
- Add sample article.html for mock content
- Split TabView and Sidebar logic into PhoneTabView, PadSidebarView, SidebarTab, and BookmarkState for better device adaptation
- Remove old SettingsViewModel, introduce SettingsGeneralViewModel and SettingsServerViewModel for modular settings
- Update BookmarksView and BookmarksViewModel for new paginated and filtered data model
- Clean up and modularize settings UI (SettingsGeneralView, SettingsServerView, FontSettingsView)
- Remove obsolete files (old TabView, File.swift, SettingsViewModel, etc.)
- Add BookmarksPageDto and update related data flow
- Various UI/UX improvements and code cleanup
BREAKING: Settings and navigation structure refactored, old settings logic removed
