fix(terminal): wait for shell readiness on Codex account restart (#9365)

src/renderer/src/components/terminal-pane/TerminalPane.tsx

@@ -130,6 +130,7 @@ import {
   readPrimarySelectionText
 } from '@/lib/primary-selection'
 import { APP_MENU_PASTE_EVENT } from '@/lib/app-menu-paste'
+import { CODEX_ACCOUNT_RESTART_STARTUP } from '@/lib/codex-session-restart'
 import { WORKSPACE_FILE_PATH_MIME, WORKSPACE_FILE_PATHS_MIME } from '@/lib/workspace-file-drag'
 import { isTerminalSessionStateSaveFailure } from '../../../../shared/terminal-session-state-save-failure'
 import { isTerminalZeroDimensionsDiagnostic } from '../../../../shared/terminal-zero-dimensions-diagnostic'
@@ -1620,7 +1621,7 @@ export default function TerminalPane({
         tabId,
         worktreeId,
         cwd,
-        startup: { command: 'codex' },
+        startup: CODEX_ACCOUNT_RESTART_STARTUP,
         paneTransportsRef,
         paneMode2031Ref,
         paneKittyKeyboardModesRef,

src/renderer/src/lib/codex-session-restart.test.ts

@@ -1,6 +1,10 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { useAppStore } from '@/store'
-import { markLiveCodexSessionsForRestart } from './codex-session-restart'
+import { shouldUseShellReadyStartupDelivery } from '../../../shared/codex-startup-delivery'
+import {
+  CODEX_ACCOUNT_RESTART_STARTUP,
+  markLiveCodexSessionsForRestart
+} from './codex-session-restart'
 import {
   createCompatibleRuntimeStatusResponseIfNeeded,
   type RuntimeEnvironmentCallRequest
@@ -11,6 +15,16 @@ const ACCOUNT_A = 'account-a@example.com'
 const ACCOUNT_B = 'account-b@example.com'
 const ACCOUNT_C = 'account-c@example.com'
 
+describe('CODEX_ACCOUNT_RESTART_STARTUP', () => {
+  it('waits for shell readiness before relaunching Codex after an account switch', () => {
+    expect(CODEX_ACCOUNT_RESTART_STARTUP).toEqual({
+      command: 'codex',
+      startupCommandDelivery: 'shell-ready'
+    })
+    expect(shouldUseShellReadyStartupDelivery(CODEX_ACCOUNT_RESTART_STARTUP)).toBe(true)
+  })
+})
+
 describe('markLiveCodexSessionsForRestart', () => {
   const originalWindow = (globalThis as { window?: typeof window }).window
   const runtimeEnvironmentCall = vi.fn()

src/renderer/src/lib/codex-session-restart.ts

@@ -2,6 +2,13 @@ import type { AppState } from '@/store'
 import { useAppStore } from '@/store'
 import { inspectRuntimeTerminalProcess } from '@/runtime/runtime-terminal-inspection'
 
+// Why: prompt integrations such as Starship can outlast the daemon's 300ms
+// Codex fast-path timeout; account restarts must wait until the shell accepts input.
+export const CODEX_ACCOUNT_RESTART_STARTUP = {
+  command: 'codex',
+  startupCommandDelivery: 'shell-ready'
+} as const
+
 function normalizeProcessName(processName: string | null): string | null {
   if (!processName) {
     return null