feat: Initial clean release of CHM

packages/app-desktop/gui/WindowCommandsAndDialogs/commands/globalUndo.ts

@@ -0,0 +1,27 @@
+import CommandService, { CommandContext, CommandDeclaration, CommandRuntime } from '@joplin/lib/services/CommandService';
+import { _ } from '@joplin/lib/locale';
+import { WindowControl } from '../utils/useWindowControl';
+import bridge from '../../../services/bridge';
+import canUseNativeUndo from './utils/canUseNativeUndo';
+
+export const declaration: CommandDeclaration = {
+	name: 'globalUndo',
+	label: () => _('Undo'),
+};
+
+export const runtime = (control: WindowControl): CommandRuntime => {
+	return {
+		execute: async (_context: CommandContext) => {
+			// As of January 2026, webContents.undo() doesn't work properly in more complex
+			// edit controls (e.g. CodeMirror or TinyMCE). Only use it when a more simple input
+			// has focus:
+			if (canUseNativeUndo(control)) {
+				bridge().activeWindow().webContents.undo();
+			} else {
+				await CommandService.instance().execute('editor.undo');
+			}
+		},
+
+		enabledCondition: '',
+	};
+};