Memory is built in. Drop the package matrix, the catalog template and the
entry in the generated library index, and stop building it in the package
workflow, so the add-on is no longer offered for a new install. The sources
stay as the fixture of copies that are still installed: the host keeps the
alias that maps the legacy id to the built-in provider, and the add-on page
keeps its notice that memory is built in. The inventories and the docs follow.
Assisted-by: Claude:claude-sonnet-5-5