feat(ui): use Tab to switch focus between shell and input (#14332)

packages/cli/src/ui/components/InputPrompt.tsx

@@ -135,7 +135,7 @@ export const InputPrompt: React.FC<InputPromptProps> = ({
   const kittyProtocol = useKittyKeyboardProtocol();
   const isShellFocused = useShellFocusState();
   const { setEmbeddedShellFocused } = useUIActions();
-  const { mainAreaWidth } = useUIState();
+  const { mainAreaWidth, activePtyId } = useUIState();
   const [justNavigatedHistory, setJustNavigatedHistory] = useState(false);
   const escPressCount = useRef(0);
   const [showEscapePrompt, setShowEscapePrompt] = useState(false);
@@ -829,6 +829,14 @@ export const InputPrompt: React.FC<InputPromptProps> = ({
         return;
       }
 
+      if (keyMatchers[Command.TOGGLE_SHELL_INPUT_FOCUS_IN](key)) {
+        // If we got here, Autocomplete didn't handle the key (e.g. no suggestions).
+        if (activePtyId) {
+          setEmbeddedShellFocused(true);
+        }
+        return;
+      }
+
       // Fall back to the text buffer's default input handling for all other keys
       buffer.handleInput(key);
 
@@ -870,6 +878,8 @@ export const InputPrompt: React.FC<InputPromptProps> = ({
       kittyProtocol.enabled,
       tryLoadQueuedMessages,
       setBannerVisible,
+      activePtyId,
+      setEmbeddedShellFocused,
     ],
   );