feat: Introduce an AI-driven interactive shell mode with new

`read-shell` and `write-to-shell` tools and a configurable mode setting.

packages/cli/src/ui/hooks/useExecutionLifecycle.ts

@@ -661,6 +661,10 @@ export const useExecutionLifecycle = (
     (s: BackgroundTask) => s.status === 'running',
   ).length;
 
+  const showBackgroundShell = useCallback(() => {
+    dispatch({ type: 'SET_VISIBILITY', visible: true });
+  }, [dispatch]);
+
   return {
     handleShellCommand,
     activeShellPtyId: state.activeShellPtyId,
@@ -668,6 +672,7 @@ export const useExecutionLifecycle = (
     backgroundTaskCount,
     isBackgroundTaskVisible: state.isBackgroundTaskVisible,
     toggleBackgroundTasks,
+    showBackgroundShell,
     backgroundCurrentExecution,
     registerBackgroundTask,
     dismissBackgroundTask,