What problem does it solve? Code changes to a WinForms solution can silently break the build, especially when touching forms, .Designer.cs files, resources, project references, or event wiring. This Skill enforces a mandatory build verification step so every task ends with a successfully compiled TpIDS.sln instead of undiscovered compile errors. ## Core Features & Use Cases - Mandatory Build Gate: Requires compiling TpIDS.sln with MSBuild before responding to the user, with zero errors as the acceptance criterion. - Documented Build Command: Provides the exact MSBuild.exe invocation plus fallback discovery paths across Visual Studio installations. - Architecture Guard Integration: The build also keeps the automatic 7-layer architecture guard green. - Use Case: After renaming a class and moving it between layers in a .NET Framework 4.7.2 WinForms app, the Skill forces a full solution compile, surfaces any broken references, and blocks handoff until the build is clean. ## Quick Start Use the winforms-build-verification skill to compile TpIDS.sln with MSBuild and confirm the solution builds with zero errors before finishing this task.