Remote Control: iOS app drops connection on background/foreground, no auto-reconnect, no session cleanup

Remote Control sessions between Claude Code CLI (Linux) and the Claude iOS app are unreliable when the phone app is backgrounded.

Behavior

• Connection works fine while the Claude iOS app is in the foreground — messages flow both ways
• Switching to another iOS app and returning to Claude kills the connection
• The app still shows the session as "active" but responses stop flowing
• Requires /remote-control disconnect + reconnect from the CLI to restore the session
• After /clear in the terminal, the phone shows a zombie session — appears active but won't connect at all

Feature requests

1. Auto-reconnect on foreground resume — when the iOS app returns from background, it should automatically restore the WebSocket connection without requiring CLI-side intervention
2. Delete archived sessions — old/dead remote sessions accumulate in the iOS app's archive with no way to remove them
3. Graceful /clear handling — clearing conversation in CLI should either update the remote view or cleanly disconnect it, not leave it in a zombie state

Environment

• Claude Code CLI on Ubuntu Linux 6.17
• Claude iOS app (latest) on iPhone
• Same local WiFi network
• Connection is local (not routed through external services)