diff --git a/packages/computer-use/cua/src/application-access.ts b/packages/computer-use/cua/src/application-access.ts
index 0331c1f554..7666198fad 100644
--- a/packages/computer-use/cua/src/application-access.ts
+++ b/packages/computer-use/cua/src/application-access.ts
@@ -81,6 +81,8 @@ export class ApplicationAccess {
       const saved = identity.persistable && this.options.grants().some(grant => grant.id === identity.id)
       let scope: Selection['scope'] = 'persistent'
       if (!saved && this.rejected.get(agent)?.has(identity.id)) throw this.denied(identity)
+      // The awaited user decision can outlive the helper, so re-read its live getter.
+      // oxlint-disable-next-line typescript/no-unnecessary-condition
       if (client.disposed) throw new NativeError('NATIVE_CLOSED', 'Helper is closed; acquire fresh application handles')
       if (!saved) {
         const questions = this.ctx.get('userQuestions')
diff --git a/packages/computer-use/cua/tests/api.spec.ts b/packages/computer-use/cua/tests/api.spec.ts
index e97a98cc90..95e6baea5a 100644
--- a/packages/computer-use/cua/tests/api.spec.ts
+++ b/packages/computer-use/cua/tests/api.spec.ts
@@ -30,7 +30,7 @@ function fixture(withSink = true) {
         snapshotId: `snapshot-${++generation}`, tree: `Tree ${generation}`, truncated: false,
         windows: params.windowId === undefined ? windows : windows.filter(window => window.windowId === params.windowId),
       }
-      case 'screenshot': return { mimeType: 'image/png', data: PNG, pixelWidth: 1, pixelHeight: 1, windowId: params.windowId!, bounds, coordinateSpace: 'window-points' }
+      case 'screenshot': return { mimeType: 'image/png', data: PNG, pixelWidth: 1, pixelHeight: 1, windowId: params.windowId, bounds, coordinateSpace: 'window-points' }
       default: return delivered
     }
   })
diff --git a/packages/computer-use/cua/tests/provider-lifecycle.spec.ts b/packages/computer-use/cua/tests/provider-lifecycle.spec.ts
index 34b7aafbd8..c0227c73de 100644
--- a/packages/computer-use/cua/tests/provider-lifecycle.spec.ts
+++ b/packages/computer-use/cua/tests/provider-lifecycle.spec.ts
@@ -24,12 +24,13 @@ import { SessionId } from '@deepseek-ai/dsh-session'
 import Subprocess from '@deepseek-ai/dsh-subprocess'
 import { expect, it, onTestFinished, vi } from 'vitest'
 import * as NativeProvider from '../src/index.ts'
+import type { NativeClient } from '../src/native-client.ts'
 import type { NativeBuildSpec } from '../src/native-build.ts'
 
 const native = vi.hoisted(() => ({
   prepare: vi.fn<(spec: NativeBuildSpec) => Promise<string>>(),
   architecture: vi.fn(() => 'arm64' as const),
-  request: vi.fn(), dispose: vi.fn(), instances: [] as Array<{ disposed: boolean }>,
+  request: vi.fn<NativeClient['request']>(), dispose: vi.fn(), instances: [] as Array<{ disposed: boolean }>,
 }))
 vi.mock('../src/native-build.ts', async importOriginal => ({
   ...await importOriginal<typeof import('../src/native-build.ts')>(),