fix: stabilize TASK-WP5-03 CI toolchain timeout

tests/unit/toolchain-smoke.test.ts

@@ -19,7 +19,7 @@ describe("TASK-WP0-01 minimum toolchain", () => {
     expect(probe.fabricVersion).toBe("7.4.0");
   });
 
-  it("loads and closes Fastify with the frozen Swagger plugin", async () => {
+  it("loads and closes Fastify with the frozen Swagger plugin", { timeout: 15_000 }, async () => {
     const app = await createApp();
     await app.ready();
     expect(app.hasPlugin("@fastify/swagger")).toBe(true);