communitytoolkit-guard

USE FOR: Writing concise, consistent guard clauses using CommunityToolkit.Diagnostics for argument validation, null checks, range checks, and string validation in constructors, methods, and factory methods. DO NOT USE FOR: Complex business rule validation (use FluentValidation or Peasy), user-facing form validation with error messages (use DataAnnotations), or replacing domain-level parsing/validation (use Parse Don't Validate pattern).