* Done. I've updated the workspace sorting in `frontend/src/components/ui-new/hooks/useWorkspaces.ts` to use `updated_at` instead of `created_at`. Both active and archived workspaces will now be sorted by their most recent update time (with pinned workspaces still appearing first). All type checks and lint pass. * Cleanup script changes for workspace 37e99d73-8ab0-4501-990e-1007d78e44aa