feat: release design system engine, studio and component contracts

packages/email-renderer/test/countdown.test.ts

@@ -12,7 +12,7 @@ test("countdown ticks across boundaries and stops at zero", () => {
 test("countdown generates deterministic bounded non-looping GIF output", () => {
   const first = renderCountdownGif(60000, 0);
   expect(first).toEqual(renderCountdownGif(60000, 0));
-  expect(new TextDecoder().decode(first.subarray(0,6))).toBe("GIF89a");
+  expect(new TextDecoder().decode(first.subarray(0, 6))).toBe("GIF89a");
   expect(first[6]! + first[7]! * 256).toBe(320);
   expect(first[8]! + first[9]! * 256).toBe(64);
   expect(first.at(-1)).toBe(0x3b);