Review of recipe_GCM_and_RCM_ALP-3.yml

as a first task in QA of the work here, I will start with the recipe_GCM_and_RCM_ALP-3.yml recipe file. I note that some aspects of this are planned to change with the refactoring to a single recipe but I wanted to start somewhere

Start by reviewing recipe_GCM_and_RCM_ALP-3.yml, the only file named in the issue. The issue provides no QA criteria or expected changes, so first clarify the review scope and what counts as done. Completion would require recording concrete findings or corrections after that scope is agreed.

Written by the indexing model from the issue text.