windows-app-organization-maintenance

To split oversized WinUI files, separate code into host concerns in the main project, testable application logic in the Application project, and portable core code in the Core project. This enforces project boundaries and prevents UI and application logic from collapsing into monolithic files.

In a WinUI workspace layout, view models, controls, services, converters, and resources follow deterministic placement rules to maintain namespace-folder alignment. Pages and interop also have designated locations to keep UI separated from testable application logic.

The canonical workspace and content layout uses TitleCase folder structure and correct state location rules. Maintaining this structure during reorganization ensures migration compatibility and prevents messy workspace content layouts.

To clean up dead code after refactoring a Windows app, review recent changes under the apps/windows directory, identify unused files from renames or splits, and remove them using safe cleanup procedures. This keeps the codebase free of drifted remnants.

You need to reorganize code between Windows app projects when editing files under apps/windows causes structure to drift. This occurs when UI and application logic collapse into monolithic files, making ownership unclear and maintenance difficult.

Yes, this Windows app maintenance approach requires strict adherence to .NET and WinUI placement rules. Following these rules ensures namespace-folder alignment, correct project boundary enforcement, and safe splitting procedures across host, application, and core layers.