feat: stabilize Xingtu market data sync

tests/manifest.test.ts

@@ -0,0 +1,13 @@
+import { describe, expect, test } from "vitest";
+
+import manifest from "../src/manifest.json";
+
+describe("manifest", () => {
+  test("injects the content script on the www Xingtu market page", () => {
+    expect(manifest.content_scripts?.[0]?.matches).toEqual(
+      expect.arrayContaining([
+        expect.stringMatching(/^https:\/\/(\*\.|www\.)?xingtu\.cn\/ad\/creator\/market\*$/)
+      ])
+    );
+  });
+});