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/ajv/lib/vocabularies/errors.ts

@@ -0,0 +1,18 @@
+import type {TypeError} from "../compile/validate/dataType"
+import type {ApplicatorKeywordError} from "./applicator"
+import type {ValidationKeywordError} from "./validation"
+import type {FormatError} from "./format/format"
+import type {UnevaluatedPropertiesError} from "./unevaluated/unevaluatedProperties"
+import type {UnevaluatedItemsError} from "./unevaluated/unevaluatedItems"
+import type {DependentRequiredError} from "./validation/dependentRequired"
+import type {DiscriminatorError} from "./discriminator"
+
+export type DefinedError =
+  | TypeError
+  | ApplicatorKeywordError
+  | ValidationKeywordError
+  | FormatError
+  | UnevaluatedPropertiesError
+  | UnevaluatedItemsError
+  | DependentRequiredError
+  | DiscriminatorError