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-formats/dist/limit.d.ts

@@ -0,0 +1,10 @@
+import type { Plugin, CodeKeywordDefinition, ErrorObject } from "ajv";
+type Kwd = "formatMaximum" | "formatMinimum" | "formatExclusiveMaximum" | "formatExclusiveMinimum";
+type Comparison = "<=" | ">=" | "<" | ">";
+export type LimitFormatError = ErrorObject<Kwd, {
+    limit: string;
+    comparison: Comparison;
+}>;
+export declare const formatLimitDefinition: CodeKeywordDefinition;
+declare const formatLimitPlugin: Plugin<undefined>;
+export default formatLimitPlugin;