This is the same five-year engine that produced every figure in the proposal, running live in your browser. It opens on the configuration actually being recommended. Change any number on the left — there are 69 of them and none are locked — and the statements, the returns and the funding test rebuild as you type.
Every input carries a one-line descriptor and an evidence tag. VERIFIED means the number is traced to a primary source — customs microdata, a gazetted statute, a published tariff, a scraped shelf price. DERIVED means it is computed from verified inputs. ASSUMPTION means it is a judgement call, and you should test it. 48 of the 69 are assumptions, 17 are traced to a primary source. Those are the ones worth arguing about.