Update copilot-instructions.md (#36)

* Update copilot-instructions.md

* Update .github/copilot-instructions.md

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Copilot <[email protected]>

Author: matt-goldman

.github/copilot-instructions.md

@@ -134,6 +134,9 @@ For new site templates:
 - Prefer explicit error handling over exceptions where appropriate
 - Include XML documentation for public APIs
 - Use dependency injection patterns where applicable
+- Do not make any formatting changes unless explicitly requested
+- Do not include files in commits that contain only formatting or style changes, unless explicitly requested
+- Do not downgrade .NET versions - Blake targets .NET 9.0 and is compatible with later versions unless otherwise noted
 
 ### Testing
 
@@ -253,4 +256,4 @@ Keep instructions current with the actual codebase to ensure Copilot suggestions
 
 ---
 
-*These instructions help Copilot understand Blake's architecture, conventions, and development patterns to provide better code suggestions and assistance.*
+*These instructions help Copilot understand Blake's architecture, conventions, and development patterns to provide better code suggestions and assistance.*