fix: Add debounced Undo/Redo system to avoid character-by-character history

- Add debounced state updates for title and content (500ms delay)
- Immediate UI updates with delayed history saving
- Prevent one-letter-per-undo issue
- Add cleanup for debounce timers on unmount

mcp-server/node_modules/zod/src/v3/tests/object-in-es5-env.test.ts

@@ -0,0 +1,29 @@
+// @ts-ignore TS6133
+import { expect, test } from "vitest";
+
+import * as z from "zod/v3";
+
+const RealSet = Set;
+const RealMap = Map;
+const RealDate = Date;
+
+test("doesn’t throw when Date is undefined", () => {
+  delete (globalThis as any).Date;
+  const result = z.object({}).safeParse({});
+  expect(result.success).toEqual(true);
+  globalThis.Date = RealDate;
+});
+
+test("doesn’t throw when Set is undefined", () => {
+  delete (globalThis as any).Set;
+  const result = z.object({}).safeParse({});
+  expect(result.success).toEqual(true);
+  globalThis.Set = RealSet;
+});
+
+test("doesn’t throw when Map is undefined", () => {
+  delete (globalThis as any).Map;
+  const result = z.object({}).safeParse({});
+  expect(result.success).toEqual(true);
+  globalThis.Map = RealMap;
+});