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/hono/dist/helper/streaming/text.js

@@ -0,0 +1,12 @@
+// src/helper/streaming/text.ts
+import { TEXT_PLAIN } from "../../context.js";
+import { stream } from "./index.js";
+var streamText = (c, cb, onError) => {
+  c.header("Content-Type", TEXT_PLAIN);
+  c.header("X-Content-Type-Options", "nosniff");
+  c.header("Transfer-Encoding", "chunked");
+  return stream(c, cb, onError);
+};
+export {
+  streamText
+};