fix: preserve ebay rate-limit fallback

packages/core/test/ebay-core.test.ts

@@ -86,6 +86,21 @@ describe("eBay Scraper Cookie Handling", () => {
     ]);
   });
 
+  test("returns empty results when eBay rate-limits the request", async () => {
+    global.fetch = mock(() =>
+      Promise.resolve({
+        ok: false,
+        status: 429,
+        headers: { get: () => "0" },
+        text: () => Promise.resolve(""),
+      }),
+    ) as unknown as typeof fetch;
+
+    const results = await fetchEbayItems("laptop", 1000);
+
+    expect(results).toEqual([]);
+  });
+
   test("deduplicates repeated item links from the same card", async () => {
     global.fetch = mock(() =>
       Promise.resolve({