What problem does it solve? Fixing failing tests normally requires a full rebuild and test run for every code change, which slows down the fix-verify loop. This Skill sets up Microsoft Testing Platform (MTP) hot reload so the test host stays running and automatically re-runs affected tests whenever you edit code. ## Core Features & Use Cases - Platform Detection: Verifies the project uses Microsoft Testing Platform rather than VSTest, since hot reload only works with MTP. - Guided Setup: Walks through installing the Microsoft.Testing.Extensions.HotReload NuGet package and enabling the TESTINGPLATFORM_HOTRELOAD_ENABLED environment variable via shell or launchSettings.json. - Framework-Aware Filtering: Provides the correct test filter syntax for MSTest, NUnit, xUnit v3, and TUnit so you can target only the failing tests. - Use Case: You have three failing unit tests after a refactor. Instead of running dotnet test after every edit, you start the test host with hot reload, edit the production code, and watch the affected tests re-run automatically until they pass. ## Quick Start Set up MTP hot reload in my test project so I can iterate on my failing tests without rebuilding between changes.