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

This reverts commit 651ad63ed6.

packages/core/src/tools/definitions/base-declarations.ts

@@ -56,18 +56,6 @@ export const READ_FILE_PARAM_END_LINE = 'end_line';
 export const SHELL_TOOL_NAME = 'run_shell_command';
 export const SHELL_PARAM_COMMAND = 'command';
 export const SHELL_PARAM_IS_BACKGROUND = 'is_background';
-export const SHELL_PARAM_WAIT_SECONDS = 'wait_for_output_seconds';
-
-// -- write_to_shell --
-export const WRITE_TO_SHELL_TOOL_NAME = 'write_to_shell';
-export const WRITE_TO_SHELL_PARAM_PID = 'pid';
-export const WRITE_TO_SHELL_PARAM_INPUT = 'input';
-export const WRITE_TO_SHELL_PARAM_SPECIAL_KEYS = 'special_keys';
-
-// -- read_shell --
-export const READ_SHELL_TOOL_NAME = 'read_shell';
-export const READ_SHELL_PARAM_PID = 'pid';
-export const READ_SHELL_PARAM_WAIT_SECONDS = 'wait_seconds';
 
 // -- write_file --
 export const WRITE_FILE_TOOL_NAME = 'write_file';

packages/core/src/tools/definitions/coreTools.ts

@@ -27,8 +27,6 @@ export {
   LS_TOOL_NAME,
   READ_FILE_TOOL_NAME,
   SHELL_TOOL_NAME,
-  WRITE_TO_SHELL_TOOL_NAME,
-  READ_SHELL_TOOL_NAME,
   WRITE_FILE_TOOL_NAME,
   EDIT_TOOL_NAME,
   WEB_SEARCH_TOOL_NAME,
@@ -75,12 +73,6 @@ export {
   LS_PARAM_IGNORE,
   SHELL_PARAM_COMMAND,
   SHELL_PARAM_IS_BACKGROUND,
-  SHELL_PARAM_WAIT_SECONDS,
-  WRITE_TO_SHELL_PARAM_PID,
-  WRITE_TO_SHELL_PARAM_INPUT,
-  WRITE_TO_SHELL_PARAM_SPECIAL_KEYS,
-  READ_SHELL_PARAM_PID,
-  READ_SHELL_PARAM_WAIT_SECONDS,
   WEB_SEARCH_PARAM_QUERY,
   WEB_FETCH_PARAM_PROMPT,
   READ_MANY_PARAM_INCLUDE,
@@ -257,21 +249,18 @@ export function getShellDefinition(
   enableInteractiveShell: boolean,
   enableEfficiency: boolean,
   enableToolSandboxing: boolean = false,
-  interactiveShellMode?: string,
 ): ToolDefinition {
   return {
     base: getShellDeclaration(
       enableInteractiveShell,
       enableEfficiency,
       enableToolSandboxing,
-      interactiveShellMode,
     ),
     overrides: (modelId) =>
       getToolSet(modelId).run_shell_command(
         enableInteractiveShell,
         enableEfficiency,
         enableToolSandboxing,
-        interactiveShellMode,
       ),
   };
 }

packages/core/src/tools/definitions/dynamic-declaration-helpers.ts

@@ -22,7 +22,6 @@ import {
   PARAM_DIR_PATH,
   SHELL_PARAM_IS_BACKGROUND,
   EXIT_PLAN_PARAM_PLAN_FILENAME,
-  SHELL_PARAM_WAIT_SECONDS,
   SKILL_PARAM_NAME,
   PARAM_ADDITIONAL_PERMISSIONS,
   UPDATE_TOPIC_TOOL_NAME,
@@ -37,9 +36,7 @@ import {
 export function getShellToolDescription(
   enableInteractiveShell: boolean,
   enableEfficiency: boolean,
-  interactiveShellMode?: string,
 ): string {
-  const isAiMode = interactiveShellMode === 'ai';
   const efficiencyGuidelines = enableEfficiency
     ? `
 
@@ -59,11 +56,6 @@ export function getShellToolDescription(
       Background PIDs: Only included if background processes were started.
       Process Group PGID: Only included if available.`;
 
-  if (isAiMode) {
-    const autoPromoteInstructions = `Commands that do not complete within \`${SHELL_PARAM_WAIT_SECONDS}\` seconds are automatically promoted to background. Once promoted, use \`write_to_shell\` and \`read_shell\` to interact with the process. Do NOT use \`&\` to background commands.`;
-    return `This tool executes a given shell command as \`bash -c <command>\`. ${autoPromoteInstructions} Command is executed as a subprocess that leads its own process group. Command process group can be terminated as \`kill -- -PGID\` or signaled as \`kill -s SIGNAL -- -PGID\`.${efficiencyGuidelines}${returnedInfo}`;
-  }
-
   if (os.platform() === 'win32') {
     const backgroundInstructions = enableInteractiveShell
       ? `To run a command in the background, set the \`${SHELL_PARAM_IS_BACKGROUND}\` parameter to true. Do NOT use PowerShell background constructs.`
@@ -94,33 +86,12 @@ export function getShellDeclaration(
   enableInteractiveShell: boolean,
   enableEfficiency: boolean,
   enableToolSandboxing: boolean = false,
-  interactiveShellMode?: string,
 ): FunctionDeclaration {
-  const isAiMode = interactiveShellMode === 'ai';
-
-  // In AI mode, use wait_for_output_seconds instead of is_background
-  const backgroundParam = isAiMode
-    ? {
-        [SHELL_PARAM_WAIT_SECONDS]: {
-          type: 'number' as const,
-          description:
-            'Max seconds to wait for command to complete before auto-promoting to background (default: 5). Set low (2-5) for commands likely to prompt for input (npx, installers, REPLs). Set high (60-300) for long builds or installs. Once promoted, use write_to_shell/read_shell to interact.',
-        },
-      }
-    : {
-        [SHELL_PARAM_IS_BACKGROUND]: {
-          type: 'boolean' as const,
-          description:
-            'Set to true if this command should be run in the background (e.g. for long-running servers or watchers). The command will be started, allowed to run for a brief moment to check for immediate errors, and then moved to the background.',
-        },
-      };
-
   return {
     name: SHELL_TOOL_NAME,
     description: getShellToolDescription(
       enableInteractiveShell,
       enableEfficiency,
-      interactiveShellMode,
     ),
     parametersJsonSchema: {
       type: 'object',
@@ -149,7 +120,6 @@ export function getShellDeclaration(
           description:
             'Optional. Delay in milliseconds to wait after starting the process in the background. Useful to allow the process to start and generate initial output before returning.',
         },
-        ...backgroundParam,
         ...(enableToolSandboxing
           ? {
               [PARAM_ADDITIONAL_PERMISSIONS]: {

packages/core/src/tools/definitions/model-family-sets/default-legacy.ts

@@ -337,13 +337,11 @@ export const DEFAULT_LEGACY_SET: CoreToolSet = {
     enableInteractiveShell,
     enableEfficiency,
     enableToolSandboxing,
-    interactiveShellMode,
   ) =>
     getShellDeclaration(
       enableInteractiveShell,
       enableEfficiency,
       enableToolSandboxing,
-      interactiveShellMode,
     ),
 
   replace: {

packages/core/src/tools/definitions/model-family-sets/gemini-3.ts

@@ -344,13 +344,11 @@ export const GEMINI_3_SET: CoreToolSet = {
     enableInteractiveShell,
     enableEfficiency,
     enableToolSandboxing,
-    interactiveShellMode,
   ) =>
     getShellDeclaration(
       enableInteractiveShell,
       enableEfficiency,
       enableToolSandboxing,
-      interactiveShellMode,
     ),
 
   replace: {

packages/core/src/tools/definitions/types.ts

@@ -38,7 +38,6 @@ export interface CoreToolSet {
     enableInteractiveShell: boolean,
     enableEfficiency: boolean,
     enableToolSandboxing: boolean,
-    interactiveShellMode?: string,
   ) => FunctionDeclaration;
   replace: FunctionDeclaration;
   google_web_search: FunctionDeclaration;