[BUG] Remote Control: MCP tool permission prompts do not propagate to mobile app — session silently stalls

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?

When using Claude Code via Remote Control (/rc) from the Claude mobile app (iOS), MCP tool permission prompts — specifically for integrations like Linear and Jira/Atlassian — do not appear in the mobile interface. The session silently stalls with no indication that user input is required. The permission prompt is only visible in the local terminal.
This effectively makes MCP-heavy workflows unusable via Remote Control, since the user cannot approve tool calls without returning to the terminal.

What Should Happen?

The MCP tool permission prompt should be forwarded to and rendered in the Claude mobile app, allowing the user to approve or deny the tool call remotely — the same way file edit and bash command prompts are (partially) shown.

Error Messages/Logs

Steps to Reproduce

1. Start Claude Code with MCP servers configured (e.g., Linear, Atlassian/Jira)
2. Enable Remote Control via /rc and connect from the Claude iOS app
3. From the mobile app, ask Claude to perform an MCP tool action that requires permission — e.g., "Create a Linear issue titled 'Test issue' in team Company"
4. Claude Code invokes the MCP tool (e.g., Linear - save_issue(...)) and displays the permission prompt in the terminal only:

```
Tool use
claude.ai Linear - save_issue(title: "Test issue", team: "Company", ...)
Do you want to proceed?
❯ 1. Yes

1. Yes, and don't ask again for claude.ai Linear - save_issue commands in /workspaces/project
2. No

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.87

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_