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/useGeminiStream.ts

@@ -390,6 +390,7 @@ export const useGeminiStream = (
     backgroundTaskCount,
     isBackgroundTaskVisible,
     toggleBackgroundTasks,
+    showBackgroundShell,
     backgroundCurrentExecution,
     registerBackgroundTask,
     dismissBackgroundTask,
@@ -1917,6 +1918,7 @@ export const useGeminiStream = (
             backgroundedTool.command,
             backgroundedTool.initialOutput,
           );
+          showBackgroundShell();
         }
       }
 
@@ -2056,6 +2058,7 @@ export const useGeminiStream = (
       modelSwitchedFromQuotaError,
       addItem,
       registerBackgroundTask,
+      showBackgroundShell,
       consumeUserHint,
       isLowErrorVerbosity,
       maybeAddSuppressedToolErrorNote,