Build a setup piece by piece in Inventory and see what each swap costs
Inventory now has a builder: fill empty spaces from a catalog, preview each swap's effect before you click, and save setups without applying them.
The left side of Inventory is now a builder split into sections. Required parts sit on their own, and every optional space starts empty with an Add button that opens a searchable catalog of what is on this Mac and what you can download.
Point at a part to swap it and the middle shows that one change while the right shows what it does to the whole setup: space, usage and readiness, with anything not yet measured marked as unknown. Click to confirm.
Save inventory and Save as new keep a setup without changing anything; only Use this inventory applies it to new chats. Local memories now open to their full saved text.