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

This reverts commit 651ad63ed6.

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

@@ -92,23 +92,7 @@ export function shellReducer(
         nextTasks.delete(action.pid);
       }
       nextTasks.set(action.pid, updatedTask);
-
-      // Auto-hide panel when all tasks have exited
-      let nextVisible = state.isBackgroundTaskVisible;
-      if (action.update.status === 'exited') {
-        const hasRunning = Array.from(nextTasks.values()).some(
-          (s) => s.status === 'running',
-        );
-        if (!hasRunning) {
-          nextVisible = false;
-        }
-      }
-
-      return {
-        ...state,
-        backgroundTasks: nextTasks,
-        isBackgroundTaskVisible: nextVisible,
-      };
+      return { ...state, backgroundTasks: nextTasks };
     }
     case 'APPEND_TASK_OUTPUT': {
       const task = state.backgroundTasks.get(action.pid);

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

@@ -1,101 +0,0 @@
-/**
- * @license
- * Copyright 2025 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { useState, useEffect, useMemo, useRef } from 'react';
-import { type BackgroundTask } from './shellReducer.js';
-
-export interface BackgroundShellManagerProps {
-  backgroundTasks: Map<number, BackgroundTask>;
-  backgroundTaskCount: number;
-  isBackgroundTaskVisible: boolean;
-  activePtyId: number | null | undefined;
-  embeddedShellFocused: boolean;
-  setEmbeddedShellFocused: (focused: boolean) => void;
-  terminalHeight: number;
-}
-
-export function useBackgroundShellManager({
-  backgroundTasks,
-  backgroundTaskCount,
-  isBackgroundTaskVisible,
-  activePtyId,
-  embeddedShellFocused,
-  setEmbeddedShellFocused,
-  terminalHeight,
-}: BackgroundShellManagerProps) {
-  const [isBackgroundShellListOpen, setIsBackgroundShellListOpen] =
-    useState(false);
-  const [activeBackgroundShellPid, setActiveBackgroundShellPid] = useState<
-    number | null
-  >(null);
-
-  const prevShellCountRef = useRef(backgroundTaskCount);
-
-  useEffect(() => {
-    if (backgroundTasks.size === 0) {
-      if (activeBackgroundShellPid !== null) {
-        setActiveBackgroundShellPid(null);
-      }
-      if (isBackgroundShellListOpen) {
-        setIsBackgroundShellListOpen(false);
-      }
-    } else if (
-      activeBackgroundShellPid === null ||
-      !backgroundTasks.has(activeBackgroundShellPid)
-    ) {
-      // If active shell is closed or none selected, select the first one
-      setActiveBackgroundShellPid(backgroundTasks.keys().next().value ?? null);
-    } else if (backgroundTaskCount > prevShellCountRef.current) {
-      // A new shell was added — auto-switch to the newest one (last in the map)
-      const pids = Array.from(backgroundTasks.keys());
-      const newestPid = pids[pids.length - 1];
-      if (newestPid !== undefined && newestPid !== activeBackgroundShellPid) {
-        setActiveBackgroundShellPid(newestPid);
-      }
-    }
-    prevShellCountRef.current = backgroundTaskCount;
-  }, [
-    backgroundTasks,
-    activeBackgroundShellPid,
-    backgroundTaskCount,
-    isBackgroundShellListOpen,
-  ]);
-
-  useEffect(() => {
-    if (embeddedShellFocused) {
-      const hasActiveForegroundShell = !!activePtyId;
-      const hasVisibleBackgroundShell =
-        isBackgroundTaskVisible && backgroundTasks.size > 0;
-
-      if (!hasActiveForegroundShell && !hasVisibleBackgroundShell) {
-        setEmbeddedShellFocused(false);
-      }
-    }
-  }, [
-    isBackgroundTaskVisible,
-    backgroundTasks,
-    embeddedShellFocused,
-    backgroundTaskCount,
-    activePtyId,
-    setEmbeddedShellFocused,
-  ]);
-
-  const backgroundShellHeight = useMemo(
-    () =>
-      isBackgroundTaskVisible && backgroundTasks.size > 0
-        ? Math.max(Math.floor(terminalHeight * 0.3), 5)
-        : 0,
-    [isBackgroundTaskVisible, backgroundTasks.size, terminalHeight],
-  );
-
-  return {
-    isBackgroundShellListOpen,
-    setIsBackgroundShellListOpen,
-    activeBackgroundShellPid,
-    setActiveBackgroundShellPid,
-    backgroundShellHeight,
-  };
-}

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

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

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

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