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/eventsource-parser/dist/stream.cjs

@@ -0,0 +1,28 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: !0 });
+var index = require("./index.cjs");
+class EventSourceParserStream extends TransformStream {
+  constructor({ onError, onRetry, onComment } = {}) {
+    let parser;
+    super({
+      start(controller) {
+        parser = index.createParser({
+          onEvent: (event) => {
+            controller.enqueue(event);
+          },
+          onError(error) {
+            onError === "terminate" ? controller.error(error) : typeof onError == "function" && onError(error);
+          },
+          onRetry,
+          onComment
+        });
+      },
+      transform(chunk) {
+        parser.feed(chunk);
+      }
+    });
+  }
+}
+exports.ParseError = index.ParseError;
+exports.EventSourceParserStream = EventSourceParserStream;
+//# sourceMappingURL=stream.cjs.map