Mobile (iOS) session becomes unresponsive after `/compact`; desktop reconnect required to revive

Summary

Running /compact from the Claude Code iOS app leaves the session unresponsive — new prompts from mobile get no reply. Switching to a desktop client (terminal on macOS) and sending any prompt revives the session; mobile then works again.

Steps to reproduce

1. Open an active Claude Code session on iOS
2. Run /compact
3. Wait for compaction to complete
4. Send any prompt from iOS → no response
5. Send a prompt from a desktop terminal on the same session → responds normally
6. Return to iOS → now responsive

Expected

iOS session responds normally after compaction completes.

Actual

iOS is "frozen" until a desktop client interacts with the same session. Reproducible across multiple sessions.

Environment

• Mobile: iOS (Claude Code app)
• Desktop: macOS (terminal — Mac mini + MacBook Pro)
• Claude Code version: 2.1.150

Related issues

• #19567 — compaction hangs (no mobile specifier; this adds the iOS-specific dimension)
• #52796 — mobile remote control unresponsive after first command
• #16881 — mobile breaks after long tasks