& prefix silently ignored in interactive mode (--remote works)

Bug Description

The & prefix in interactive mode silently does nothing — the prompt runs locally as if & wasn't typed. However, claude --remote "prompt" works correctly from the CLI.

Key Detail

This feature previously worked on this machine and stopped working at some point (unclear which update broke it).

Environment

• Version: Claude Code 2.1.47
• OS: macOS (Darwin 24.6.0, Apple Silicon)
• Plan: Claude Max
• Shell: zsh

Steps to Reproduce

1. Start an interactive Claude Code session: claude
2. Type: & just say hello
3. Expected: Creates a remote session on claude.ai/code
4. Actual: Prompt runs locally as a normal message, & is silently ignored

What Works

• claude --remote "just say hello" — correctly creates remote session
• Web UI at claude.ai/code — fully functional, GitHub connected, Claude GitHub app installed
• /teleport — works

What Doesn't Work

• & prompt inside interactive session — silently treated as normal local prompt
• No error message, no indication that & was even recognized

Expected Behavior

& prompt in interactive mode should create a remote session on claude.ai/code, as documented and as it previously worked on this machine.

Suspicion

May be related to a statsig feature flag rollout — the & shortcut appears to be gated separately from --remote.