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/iconv-lite/encodings/index.js

@@ -0,0 +1,23 @@
+"use strict"
+
+var mergeModules = require("../lib/helpers/merge-exports")
+
+// Update this array if you add/rename/remove files in this directory.
+// We support Browserify by skipping automatic module discovery and requiring modules directly.
+var modules = [
+  require("./internal"),
+  require("./utf32"),
+  require("./utf16"),
+  require("./utf7"),
+  require("./sbcs-codec"),
+  require("./sbcs-data"),
+  require("./sbcs-data-generated"),
+  require("./dbcs-codec"),
+  require("./dbcs-data")
+]
+
+// Put all encoding/alias/codec definitions to single object and export it.
+for (var i = 0; i < modules.length; i++) {
+  var module = modules[i]
+  mergeModules(exports, module)
+}