feat(api-contract): add order contract

Add order contract with list and get operations.
Uses singular naming convention.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: npslaney

src/contracts/order.ts

@@ -0,0 +1,39 @@
+import { oc } from "@orpc/contract";
+import { z } from "zod";
+import { CustomerSchema } from "../schemas/customer";
+import { OrderItemSchema, OrderSchema } from "../schemas/order";
+import {
+	PaginationInputSchema,
+	PaginationOutputSchema,
+} from "../schemas/pagination";
+
+// Order with related data for list view
+const OrderWithRelationsSchema = OrderSchema.extend({
+	customer: CustomerSchema.nullable(),
+	orderItems: z.array(OrderItemSchema),
+});
+
+// Order with full details for get view
+const OrderDetailSchema = OrderWithRelationsSchema;
+
+const ListOrdersInputSchema = PaginationInputSchema.extend({
+	customerId: z.string().optional(),
+	status: z.string().optional(), // Prisma uses String type for status
+});
+
+const ListOrdersOutputSchema = PaginationOutputSchema.extend({
+	orders: z.array(OrderWithRelationsSchema),
+});
+
+export const listOrdersContract = oc
+	.input(ListOrdersInputSchema)
+	.output(ListOrdersOutputSchema);
+
+export const getOrderContract = oc
+	.input(z.object({ id: z.string() }))
+	.output(OrderDetailSchema);
+
+export const order = {
+	list: listOrdersContract,
+	get: getOrderContract,
+};

src/index.ts

@@ -7,6 +7,7 @@ import {
 	products as mcpProducts,
 } from "./contracts/mcp";
 import { onboarding } from "./contracts/onboarding";
+import { order } from "./contracts/order";
 import { products } from "./contracts/products";
 
 export type {
@@ -59,7 +60,7 @@ export {
 } from "./schemas/product-price-input";
 
 // SDK contract - consumed by SDK clients
-export const contract = { checkout, customer, onboarding, products };
+export const contract = { checkout, customer, onboarding, order, products };
 
 /**
  * MCP contract - separate namespace for MCP tools.