feat(orders): month/year filter on both order lists + fix received-orders search

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/__tests__/issued-orders.test.ts

@@ -10,6 +10,7 @@ import {
   computeIssuedOrderTotals,
   createIssuedOrder,
   getIssuedOrder,
+  listIssuedOrders,
   updateIssuedOrder,
   deleteIssuedOrder,
 } from "../services/issued-orders.service";
@@ -219,6 +220,26 @@ describe("deleteIssuedOrder", () => {
   });
 });
 
+describe("listIssuedOrders month filter", () => {
+  it("returns only orders whose order_date is in the given month", async () => {
+    const inMonth = await createIssuedOrder({ order_date: "2026-03-15" });
+    const outMonth = await createIssuedOrder({ order_date: "2026-04-15" });
+    createdIds.push(inMonth.id, outMonth.id);
+    const res = await listIssuedOrders({
+      page: 1,
+      limit: 50,
+      skip: 0,
+      sort: "id",
+      order: "desc",
+      month: 3,
+      year: 2026,
+    });
+    const ids = res.data.map((o) => o.id);
+    expect(ids).toContain(inMonth.id);
+    expect(ids).not.toContain(outMonth.id);
+  });
+});
+
 describe("renderIssuedOrderHtml", () => {
   const order = {
     po_number: "26720001",