diff --git a/packages/experimental/client-ui-cua/tests/mount.client.spec.ts b/packages/experimental/client-ui-cua/tests/mount.client.spec.ts
index 846175c5d9..77ed4d1c10 100644
--- a/packages/experimental/client-ui-cua/tests/mount.client.spec.ts
+++ b/packages/experimental/client-ui-cua/tests/mount.client.spec.ts
@@ -39,7 +39,10 @@ async function fixture(fail = false) {
     $on(_event: string, listener: (namespace: string, revision: number) => void) { settingsListener = listener; return unsubscribe }
   }
   new Remote()
-  const setDefault = vi.fn(async () => true), setPersistent = vi.fn(async () => true)
+  const setDefault = vi.fn(async () => true)
+  const setPersistent = vi.fn<() => Promise<RemoteResult<void>>>().mockResolvedValue({ ok: true, value: undefined })
+  const runtimeConfiguration = vi.fn<() => Promise<RemoteResult<{ persistent: boolean; writable: boolean }>>>()
+    .mockResolvedValue({ ok: true, value: { persistent: false, writable: true } })
   const preset = createSnapshotStore({ status: 'ready' as const, value: { default: 'standard' },
     base: {}, user: {}, revision: 1, writable: true })
   ctx.provide('configForms', { get: (namespace: string) => {
@@ -55,8 +58,7 @@ async function fixture(fail = false) {
   const revoke = vi.fn<() => Promise<RemoteResult<void>>>().mockResolvedValue({ ok: true, value: undefined })
   const retryApproval = vi.fn<() => Promise<RemoteResult<void>>>().mockResolvedValue({ ok: true, value: undefined })
   ctx.provide('remote.cuaAccess', {
-    ptcConfiguration: vi.fn(async () => ({ ok: true, value: { persistent: false, writable: true } })),
-    enablePersistentPtc: async () => { await setPersistent(); return { ok: true, value: undefined } },
+    ptcConfiguration: runtimeConfiguration, enablePersistentPtc: setPersistent,
     applications: status, systemStatus, applicationIcons, requestPermission, openSettings, revoke, retryApproval })
   ctx.provide('locale', new LocaleRuntime(ctx))
   await ctx.plugin(SlotRegistry)
@@ -67,7 +69,7 @@ async function fixture(fail = false) {
   } } as never, () => null)
   if (fail) vi.spyOn(ctx.slots, 'inject').mockImplementationOnce(() => { throw new Error('slot unavailable') })
   return { ctx, unmount, unsubscribe, status, systemStatus, applicationIcons,
-    requestPermission, openSettings, revoke, retryApproval, setDefault, setPersistent,
+    requestPermission, openSettings, revoke, retryApproval, setDefault, setPersistent, runtimeConfiguration,
     updateSettings(namespace: string) { settingsListener!(namespace, 1) },
   }
 }
@@ -98,7 +100,8 @@ it('withdraws the permission Remote and all controls with the optional plugin',
     await vi.waitFor(() => { expect(actions.hooks.cuaPermissions.getSnapshot().toast?.kind).toBe('retryAllowed') })
     const failed = { ok: false as const, error: new RemoteError('gateway/internal', 'offline', {}) }
     for (const [target, invoke] of [
-      [f.status, actions.refresh], [f.systemStatus, actions.refresh], [f.applicationIcons, actions.refresh], [f.requestPermission, () => { actions.request('accessibility') }],
+      [f.runtimeConfiguration, actions.refresh], [f.status, actions.refresh], [f.systemStatus, actions.refresh],
+      [f.applicationIcons, actions.refresh], [f.requestPermission, () => { actions.request('accessibility') }],
       [f.openSettings, () => { actions.openSettings('accessibility') }],
       [f.revoke, () => { actions.revoke('a'.repeat(64) as import('@deepseek-ai/dsh-cua/types').CuaApplicationId) }],
       [f.retryApproval, () => { actions.retryApproval('a'.repeat(64) as import('@deepseek-ai/dsh-cua/types').CuaApplicationId) }],
@@ -109,8 +112,9 @@ it('withdraws the permission Remote and all controls with the optional plugin',
       invoke()
       await vi.waitFor(() => {
         const state = actions.hooks.cuaPermissions.getSnapshot()
-        const error = target === f.status ? state.applications.error : target === f.systemStatus ? state.system.error
-          : target === f.applicationIcons ? state.icons.error : state.toast?.kind === 'failed' ? state.toast.message : null
+        const error = target === f.runtimeConfiguration ? state.runtime.error : target === f.status ? state.applications.error
+          : target === f.systemStatus ? state.system.error
+            : target === f.applicationIcons ? state.icons.error : state.toast?.kind === 'failed' ? state.toast.message : null
         expect(error).toContain('offline')
       })
     }
@@ -131,6 +135,8 @@ it('withdraws the permission Remote and all controls with the optional plugin',
     expect(f.setPersistent).not.toHaveBeenCalled()
     await (settings.setPersistentPtc as () => Promise<boolean>)()
     expect(f.setPersistent).toHaveBeenCalledExactlyOnceWith()
+    f.setPersistent.mockResolvedValueOnce(failed)
+    await expect((settings.setPersistentPtc as () => Promise<boolean>)()).rejects.toThrow('offline')
     await fiber.dispose()
     expect(f.ctx.slots.entries('conversation.composer')).toHaveLength(0)
     expect(f.ctx.slots.entries('plugins.bundle.config')).toHaveLength(0)