fix(invoice): use shippingLine.deliveryCategory as primary pickup signal

Order 1032 on dev still rendered as 'Versandart: Lager Graz' because the
shipping line's title/code/source contained no 'pickup' keyword — only
`shippingLine.deliveryCategory == "pickup"` flagged it as a pickup.

`shippingLine.deliveryCategory` only requires `read_orders` (already
granted), so query and use it as the primary signal. Keep the regex on
title/code/source/carrier as a fallback for custom rates without a proper
pickup category.

scripts/render-sample.ts

@@ -168,6 +168,7 @@ function buildAtB2BOrder(): RawOrderForInvoice {
       code: "STD",
       source: "shopify",
       carrierIdentifier: null,
+      deliveryCategory: "shipping",
       originalPriceSet: { shopMoney: { amount: "5.00", currencyCode: "EUR" } },
       discountedPriceSet: { shopMoney: { amount: "5.00", currencyCode: "EUR" } },
       taxLines: [
@@ -302,6 +303,25 @@ function buildPickupOrder(): RawOrderForInvoice {
     code: "Pickup",
     source: "shopify",
     carrierIdentifier: null,
+    deliveryCategory: "pickup",
+    originalPriceSet: { shopMoney: { amount: "0.00", currencyCode: "EUR" } },
+    discountedPriceSet: { shopMoney: { amount: "0.00", currencyCode: "EUR" } },
+    taxLines: [],
+  };
+  return o;
+}
+
+/** Pickup variant where neither title/code nor source mention "pickup" —
+ *  detection must rely purely on `deliveryCategory`. Mirrors what we
+ *  observed on a real Shopify Local Pickup install. */
+function buildCategoryOnlyPickupOrder(): RawOrderForInvoice {
+  const o = buildAtB2BOrder();
+  o.shippingLine = {
+    title: "Lager Graz",
+    code: "Standard",
+    source: "shopify",
+    carrierIdentifier: null,
+    deliveryCategory: "pickup",
     originalPriceSet: { shopMoney: { amount: "0.00", currencyCode: "EUR" } },
     discountedPriceSet: { shopMoney: { amount: "0.00", currencyCode: "EUR" } },
     taxLines: [],
@@ -622,6 +642,19 @@ async function main() {
   const pickupEnText = await pdfToText(await renderInvoicePdf(pickupEnVm));
   assert("EN pickup PDF shows 'Pick-up location' label", pickupEnText.includes("Pick-up location"));
 
+  // Real-world pickup variant: shippingLine has no "pickup" keyword in
+  // title/code/source — only `deliveryCategory` says it's pickup.
+  const categoryPickupVm = composeInvoice({
+    order: buildCategoryOnlyPickupOrder(),
+    settings: settings as never,
+    invoiceNumber: "RE-1033",
+  });
+  assert("isPickup detected from deliveryCategory alone", categoryPickupVm.isPickup);
+  assertEq("pickupLocationName from title when category-only",
+    categoryPickupVm.pickupLocationName, "Lager Graz");
+  assert("shippingMethod cleared in category-only pickup",
+    categoryPickupVm.shippingMethod == null);
+
   // Fallback: when footerNoteEn is empty, English uses the German note.
   console.log("• Footer note fallback (en → de when EN empty)");
   const settingsNoEn = { ...(settings as object), footerNoteEn: "" } as never;