- Update pancake/third_party alias path to use correct NIXPACKS_PHP_ROOT_DIR
- Add proper pretty URL handling with @pancake_fallback location
- Fix SCRIPT_FILENAME to use $document_root instead of $realpath_root
- Enables Apache .htaccess equivalent functionality in nginx
This resolves issues where:
- Static assets in pancake/third_party were returning 404
- Pretty URLs without index.php were not working correctly
- Pancake application routing was broken