Woocommerce Backend Dev

This one's for when you're writing or modifying WooCommerce backend PHP code and need to follow the project's actual conventions. It covers the essentials: where to put new classes (src/Internal/ by default), how to name things, hook callback patterns, dependency injection usage, and unit testing requirements. The instructions link out to detailed docs on file organization, coding standards, and data integrity practices. One nice touch is the clear guidance on version numbers for @since annotations, which saves you from guessing. It assumes you're working in a WooCommerce core or plugin codebase where these conventions matter, not just throwing together a quick integration.