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/dist/vocabularies/validation/limitNumber.d.ts

@@ -0,0 +1,11 @@
+import type { CodeKeywordDefinition, ErrorObject } from "../../types";
+type Kwd = "maximum" | "minimum" | "exclusiveMaximum" | "exclusiveMinimum";
+type Comparison = "<=" | ">=" | "<" | ">";
+export type LimitNumberError = ErrorObject<Kwd, {
+    limit: number;
+    comparison: Comparison;
+}, number | {
+    $data: string;
+}>;
+declare const def: CodeKeywordDefinition;
+export default def;