The purpose of this command is to create or update chat customization files - the agent instructions file ( or ) to help AI coding agents understand the codebase and be immediately productive - skills and custom agents to automate common tasks or enforce conventions in the codebase The user can optionally call this command with an argument. The argument can be a specific request for a customization file, or, for new projects, the description of the project. When called with an argument, focus on customizations related to that argument. Only create or modify chat customization files. Never sta…