## Debugging WordPress Playground - Start CLI with Xdebug: `server --auto-mount --xdebug`. The CLI prints host/port and IDE key to configure your debugger; if the installed CLI help differs, follow `npx @wp-playground/cli@latest server --help`. - If breakpoints are not hit, confirm: - IDE listens on the port shown by CLI. - Path mappings include the mounted VFS path used by Playground. - For slow or stuck runs: - Add `--verbosity=debug` to see step-level logs. - Use `--debug` to print the PHP error log when boot fails. - Adjust request workers with `--workers=`; use `--workers=1` to isolate worker-related behavior. - For mount issues: - Prefer absolute paths in `--mount`. - Use `--mount-before-install` when installer steps need files present early. - To inspect runtime state: - Open the Playground browser console; the Service Worker logs network/FS events. - Use the “Terminal” tab (if available) to run WP-CLI inside the instance.