Write and edit QuickMarkup declarative UI markup in C# projects. Use when the project uses QuickMarkup, identifiable by `using QuickMarkup.Infra`, `using QuickMarkup.SourceGen`, or `[QuickMarkup(...)]` attribute in .cs files.
How to run, update, or add snapshot tests for source generator output in Get.Parser. Snapshot tests verify generated C# code (`.g.cs`) against stored reference files to catch regressions.