mtp-hot-reload

# MTP Hot Reload for Iterative Test Fixing Set up and use Microsoft Testing Platform hot reload to rapidly iterate fixes on failing tests without rebuilding between each change. ## When to Use - User has one or more failing tests and wants to iterate fixes quickly - User wants to avoid rebuild overhead while fixing test code or production code - User asks about hot reload for tests or speeding up the test-fix loop - User needs to set up MTP hot reload in their project ## When Not to Use - User needs to write new tests from scratch (use general coding assistance) - User needs to diagnose why a test is failing (use diagnostic skills) - User wants Visual Studio Test Explorer hot reload (different feature, built into VS) - Project uses VSTest -- hot reload requires Microsoft Testing Platform (MTP) - User needs CI/CD pipeline configuration ## Inputs | Input | Required | Description | |-------|----------|-------------| | Test project path | No | Path to the test project (.csproj). Defaults to current directory. | | Failing test name or filter | No | Specific test(s) to iterate on | ## Workflow ### Step 1: Verify the project uses Microsoft Testing Platform Hot reload requires MTP. It does **not** work with VSTest. Follow the detection procedure in the `platform-detection` skill to determine the test platform. If the project uses VSTest, inform the user that MTP hot reload is not available and suggest migrating to MTP first (see `migrate-vstest-to-mtp`), or using Visual S...