fix(tui): handle Kitty protocol lock key modifiers

Fixes keyboard input in Ghostty on Linux when Num Lock is enabled.
The Kitty protocol includes Caps Lock (64) and Num Lock (128) bits
in modifier values. Now masks out lock bits when matching shortcuts.

Added helper functions: isArrowUp/Down/Left/Right, isEnter, isTab,
isBackspace, isShiftEnter, isAltEnter, isAltLeft/Right, isCtrlLeft/Right

fixes #243

packages/tui/src/index.ts

@@ -21,18 +21,31 @@ export { TruncatedText } from "./components/truncated-text.js";
 // Kitty keyboard protocol helpers
 export {
 	isAltBackspace,
+	isAltEnter,
+	isAltLeft,
+	isAltRight,
+	isArrowDown,
+	isArrowLeft,
+	isArrowRight,
+	isArrowUp,
+	isBackspace,
 	isCtrlA,
 	isCtrlC,
 	isCtrlD,
 	isCtrlE,
 	isCtrlK,
+	isCtrlLeft,
 	isCtrlO,
 	isCtrlP,
+	isCtrlRight,
 	isCtrlT,
 	isCtrlU,
 	isCtrlW,
+	isEnter,
 	isEscape,
+	isShiftEnter,
 	isShiftTab,
+	isTab,
 	Keys,
 } from "./keys.js";
 // Terminal interface and implementations