fix(invoice): drop fulfillmentOrders query (scope-denied), keep shippingLine pickup heuristic

Querying Order.fulfillmentOrders.deliveryMethod requires the
read_merchant_managed_fulfillment_orders scope (not read_orders, despite
what shopify.dev claims) and was failing with 'Access denied for
fulfillmentOrders field' against real stores.

Adding that scope would force every install to re-grant permissions, so
instead we rely on shippingLine alone:

- Shopify Local Pickup app: shippingLine.code = 'Pickup' (caught by the
  regex) and shippingLine.title is the chosen location name itself   (e.g. 'Lager Graz') \u2014 perfect as pickupLocationName.
- Custom-rate pickup ('Abholung im Lager'): regex matches title/code,
  title is used as the location hint.

Removes RawDeliveryMethod, the deliveryMethods field on RawOrderForInvoice,
and the fulfillmentOrders edges from RawAdminResponse.

app/services/invoice/loadOrderForInvoice.server.ts

@@ -25,11 +25,6 @@ export interface RawOrderForInvoice {
   taxLines: RawTaxLine[];
   shippingLine: RawShippingLine | null;
   fulfillments: RawFulfillment[];
-  /** Delivery methods declared on the order's fulfillment orders. Used to
-   *  reliably detect local pickup (`methodType === "PICK_UP"`) and to
-   *  surface the pickup-location name. May be empty for unfulfilled or
-   *  digital orders. */
-  deliveryMethods: RawDeliveryMethod[];
   /** Discount codes applied to the cart (e.g. `["SUMMER10"]`). Empty when
    *  no codes were used. Manual / automatic discounts without a code are
    *  not exposed here. */
@@ -107,17 +102,6 @@ export interface RawFulfillment {
   trackingInfo: RawTrackingInfo[];
 }
 
-/** Subset of Shopify's `DeliveryMethod` we care about. `methodType` is one
- *  of the enum values from `DeliveryMethodType` — e.g. `SHIPPING`,
- *  `PICK_UP`, `LOCAL`, `RETAIL`, `PICKUP_POINT`, `NONE`. */
-export interface RawDeliveryMethod {
-  methodType: string | null;
-  /** Name of the location the customer chose to pick up from (when
-   *  `methodType === "PICK_UP"`). Comes from the assigned location of the
-   *  fulfillment order. */
-  locationName: string | null;
-}
-
 const QUERY = `#graphql
   query OrderForInvoice($id: ID!) {
     order(id: $id) {
@@ -189,18 +173,6 @@ const QUERY = `#graphql
           company
         }
       }
-      fulfillmentOrders(first: 20) {
-        edges {
-          node {
-            deliveryMethod {
-              methodType
-            }
-            assignedLocation {
-              name
-            }
-          }
-        }
-      }
       lineItems(first: 250) {
         edges {
           node {
@@ -268,14 +240,6 @@ interface RawAdminResponse {
       discountCodes: string[] | null;
       shippingLine: RawShippingLine | null;
       fulfillments: RawFulfillment[] | null;
-      fulfillmentOrders: {
-        edges: {
-          node: {
-            deliveryMethod: { methodType: string | null } | null;
-            assignedLocation: { name: string | null } | null;
-          };
-        }[];
-      } | null;
       lineItems: { edges: { node: RawLineItem }[] };
       purchasingEntity: {
         company?: { name: string } | null;
@@ -329,10 +293,6 @@ export async function loadOrderForInvoice(
       : (order.discountCode ? [order.discountCode] : []),
     shippingLine: order.shippingLine ?? null,
     fulfillments: order.fulfillments ?? [],
-    deliveryMethods: (order.fulfillmentOrders?.edges ?? []).map((e) => ({
-      methodType: e.node.deliveryMethod?.methodType ?? null,
-      locationName: e.node.assignedLocation?.name ?? null,
-    })),
     lineItems: (order.lineItems?.edges || []).map((e) => {
       const node = e.node as unknown as RawLineItem & { image?: { url: string | null } | null };
       return {