[BUG] "Additional allowed domains" field missing from Capabilities settings on iOS mobile app

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

On the Claude mobile app (iOS), the Capabilities settings screen does not show an "Additional allowed domains" field anywhere, even with "Code execution and file creation" and network egress enabled. This field is documented/expected to let users add custom domains to the sandbox's network allowlist, and is present on desktop/web.

What Should Happen?

An "Additional allowed domains" input field should appear under Code execution and file creation, matching what's available on desktop/web, so users can add custom domains to the sandbox network allowlist from mobile.

Error Messages/Logs

N/A

Steps to Reproduce

1. Open the Claude iOS app
2. Go to Settings > Capabilities
3. Ensure "Code execution and file creation" is toggled on
4. Scroll through the full Capabilities page (Artifacts, Inline visualizations, Code execution and file creation, Web search, Switch models when a message is flagged, Memory settings, Tool access)
5. No domain allowlist input field appears anywhere on the screen

Claude Model

_No response_

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

1.260904.19 (33939969638)

Platform

Other

Operating System

Other

Terminal/Shell

Other

Additional Information

Platform: iOS (Claude mobile app, not Claude Code)
Account type: Pro
App version: 1.260904.19 (33939969638)

This is documented as an account-level setting, expected to be editable from any platform, including mobile. Screenshots of the full Capabilities screen attached showing every section with no domain field present. Only on/off toggles are shown, even after updating to the latest app version.

<img width="1206" height="2422" alt="Image" src="https://github.com/user-attachments/assets/5a299f04-0087-4d4f-a8c3-0ffa624783b1" />
<img width="1206" height="2319" alt="Image" src="https://github.com/user-attachments/assets/4454931b-2c29-4b05-837c-7825841c7040" />