Feature request: Cancel/interrupt button for Remote Control (mobile)

Summary

When using Claude Code via Remote Control mode from a mobile browser (claude.ai), there is no way to cancel or interrupt a running tool (e.g., WebFetch, Bash) that hangs or takes too long.

On desktop, Ctrl+C works. On mobile, the only options are waiting for a timeout or killing the process from another terminal — neither is practical.

Use case

• WebFetch hangs on large pages (e.g., Wikipedia 400KB+) with no timeout mechanism
• Long-running Bash commands that unexpectedly stall
• Any tool that blocks the session without a way to recover from mobile

Proposed solution

Add a Cancel / Stop button in the Remote Control UI (claude.ai web interface) that sends an interrupt signal equivalent to Ctrl+C on the desktop app.

Current workaround

• PreToolUse hooks to block known problematic tools (e.g., WebFetch)
• Using curl --max-time or timeout wrappers instead of built-in tools
• These are preventive only — no recovery option exists once a tool hangs

Environment

• Claude Code Desktop App on Windows 11
• Remote Control from mobile browser (iOS/Android)