Read receipt lines under the keys the receipt panel renders

The order-details panel reads qty/description/amount from
expense_metadata.line_items. A grocery shop is a receipt like any other, so it
stores the same keys rather than name/quantity/line_total — otherwise the rows
arrive complete and display blank, which is exactly the failure ING-8 names.
unit and category are the two fields a grocery line has and a delivery line does
not; nothing renders them yet and the category composition will.

src/__tests__/integration/receipt-ingest.test.ts

@@ -37,8 +37,8 @@ const colesSplit = () => ({
     { leg_index: 2, amount: 73.82, card_last4: "3302", card_product: "MASTERCARD", class: "card" as const },
   ],
   line_items: [
-    { name: "Pork Loin Roast", quantity: 1, unit: "ea", line_total: 15.86, category: "meat" },
-    { name: "Tomatoes", quantity: 1, unit: "ea", line_total: 98.71, category: "produce" },
+    { description: "Pork Loin Roast", qty: 1, unit: "ea", amount: 15.86, category: "meat" },
+    { description: "Tomatoes", qty: 1, unit: "ea", amount: 98.71, category: "produce" },
   ],
 });
 
@@ -50,7 +50,7 @@ const woolworthsGiftCard = () => ({
   transaction_date: "2026-06-29",
   total: 40.75,
   tender_legs: [{ leg_index: 1, amount: 40.75, card_last4: "0443", card_product: "STORE CARD", class: "gift_card" as const }],
-  line_items: [{ name: "Oat Milk", quantity: 2, unit: "ea", line_total: 40.75, category: "dairy" }],
+  line_items: [{ description: "Oat Milk", qty: 2, unit: "ea", amount: 40.75, category: "dairy" }],
 });
 
 beforeAll(async () => {
@@ -197,7 +197,7 @@ describe("validation — what becomes money", () => {
   });
 
   it("flags but accepts lines that do not sum, because promo rows are skipped by design", async () => {
-    const res = await POST(req({ ...colesSplit(), line_items: [{ name: "One line", line_total: 10 }] }));
+    const res = await POST(req({ ...colesSplit(), line_items: [{ description: "One line", amount: 10 }] }));
     expect(res.status).toBe(200);
     expect((await res.json()).flags.some((f: string) => f.startsWith("line_items_sum_"))).toBe(true);
   });