[BUG] Mobile app: slash commands & skills execute but don't autocomplete (works on Desktop)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report
• [x] I am using the latest version of Claude Code

What's Wrong?

On the mobile Claude Code app, typing a slash command shows no autocomplete
suggestion, even though the command still runs on Enter. Typing /compact produces
no entry in the "/" menu, yet it executes correctly. User skills also don't surface in
the "/" menu on mobile.

The same actions autocomplete correctly on the Desktop app — this is a
mobile-only gap.

What Should Happen?

Typing / (and filtering as you type) should list matching built-in commands and
skills on mobile, with parity to Desktop and the VS Code extension.

Error Messages/Logs

(none — the command runs; it's just absent from autocomplete on mobile)

Steps to Reproduce

1. Open the Claude Code mobile app.
2. Type /comp in the input box.
3. Observe: no filtered suggestion for /compact appears.
4. Press Enter — /compact runs correctly regardless.
5. Same with user skills: they run, but don't show as typed-filter suggestions.
6. Repeat the same steps on Desktop -> autocomplete works as expected.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

(n/a)

Claude Code Version

Latest (mobile app)

Platform

Anthropic API

Operating System

Other (Android)

Terminal/Shell

Other (Claude mobile app — not a terminal)

Additional Information

Desktop autocomplete works correctly; this is mobile-only. Related skill-autocomplete
issues on other surfaces: #10246, #18949, #9710, #54160. Companion to the mobile
status-display request #71583.