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/default.test.ts

@@ -0,0 +1,112 @@
+// @ts-ignore TS6133
+import { expect, test } from "vitest";
+
+import { z } from "zod/v3";
+import { util } from "../helpers/util.js";
+
+test("basic defaults", () => {
+  expect(z.string().default("default").parse(undefined)).toBe("default");
+});
+
+test("default with transform", () => {
+  const stringWithDefault = z
+    .string()
+    .transform((val) => val.toUpperCase())
+    .default("default");
+  expect(stringWithDefault.parse(undefined)).toBe("DEFAULT");
+  expect(stringWithDefault).toBeInstanceOf(z.ZodDefault);
+  expect(stringWithDefault._def.innerType).toBeInstanceOf(z.ZodEffects);
+  expect(stringWithDefault._def.innerType._def.schema).toBeInstanceOf(z.ZodSchema);
+
+  type inp = z.input<typeof stringWithDefault>;
+  util.assertEqual<inp, string | undefined>(true);
+  type out = z.output<typeof stringWithDefault>;
+  util.assertEqual<out, string>(true);
+});
+
+test("default on existing optional", () => {
+  const stringWithDefault = z.string().optional().default("asdf");
+  expect(stringWithDefault.parse(undefined)).toBe("asdf");
+  expect(stringWithDefault).toBeInstanceOf(z.ZodDefault);
+  expect(stringWithDefault._def.innerType).toBeInstanceOf(z.ZodOptional);
+  expect(stringWithDefault._def.innerType._def.innerType).toBeInstanceOf(z.ZodString);
+
+  type inp = z.input<typeof stringWithDefault>;
+  util.assertEqual<inp, string | undefined>(true);
+  type out = z.output<typeof stringWithDefault>;
+  util.assertEqual<out, string>(true);
+});
+
+test("optional on default", () => {
+  const stringWithDefault = z.string().default("asdf").optional();
+
+  type inp = z.input<typeof stringWithDefault>;
+  util.assertEqual<inp, string | undefined>(true);
+  type out = z.output<typeof stringWithDefault>;
+  util.assertEqual<out, string | undefined>(true);
+});
+
+test("complex chain example", () => {
+  const complex = z
+    .string()
+    .default("asdf")
+    .transform((val) => val.toUpperCase())
+    .default("qwer")
+    .removeDefault()
+    .optional()
+    .default("asdfasdf");
+
+  expect(complex.parse(undefined)).toBe("ASDFASDF");
+});
+
+test("removeDefault", () => {
+  const stringWithRemovedDefault = z.string().default("asdf").removeDefault();
+
+  type out = z.output<typeof stringWithRemovedDefault>;
+  util.assertEqual<out, string>(true);
+});
+
+test("nested", () => {
+  const inner = z.string().default("asdf");
+  const outer = z.object({ inner }).default({
+    inner: undefined,
+  });
+  type input = z.input<typeof outer>;
+  util.assertEqual<input, { inner?: string | undefined } | undefined>(true);
+  type out = z.output<typeof outer>;
+  util.assertEqual<out, { inner: string }>(true);
+  expect(outer.parse(undefined)).toEqual({ inner: "asdf" });
+  expect(outer.parse({})).toEqual({ inner: "asdf" });
+  expect(outer.parse({ inner: undefined })).toEqual({ inner: "asdf" });
+});
+
+test("chained defaults", () => {
+  const stringWithDefault = z.string().default("inner").default("outer");
+  const result = stringWithDefault.parse(undefined);
+  expect(result).toEqual("outer");
+});
+
+test("factory", () => {
+  expect(z.ZodDefault.create(z.string(), { default: "asdf" }).parse(undefined)).toEqual("asdf");
+});
+
+test("native enum", () => {
+  enum Fruits {
+    apple = "apple",
+    orange = "orange",
+  }
+
+  const schema = z.object({
+    fruit: z.nativeEnum(Fruits).default(Fruits.apple),
+  });
+
+  expect(schema.parse({})).toEqual({ fruit: Fruits.apple });
+});
+
+test("enum", () => {
+  const schema = z.object({
+    fruit: z.enum(["apple", "orange"]).default("apple"),
+  });
+
+  expect(schema.parse({})).toEqual({ fruit: "apple" });
+});