[BUG] SSH connection hangs silently + subsequent chat messages not displayed — likely shared connection issue

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?

Two symptoms appear together in the same session and are likely caused by the same underlying issue:

SSH connection via the Code tab produces no output and no error — hangs silently
After this occurs, any further messages sent in the Chat tab do not appear in the UI

The second symptom only occurs after the first, suggesting a shared WebSocket or session state is broken by the hanging SSH connection.
Environment:

Interface: Claude Cowork (Chat + Code tab)
Server: root@xxxxxxxxx, working directory /clawdy

Actual behavior:

SSH silently hangs
Chat becomes unresponsive — messages disappear without being displayed

Root cause hypothesis:
The hanging SSH connection likely blocks or corrupts a shared WebSocket/event loop that both the Code tab and Chat tab depend on. When the connection stalls, the entire session's message pipeline breaks.
Possible fixes:

Isolate Chat and Code tab communication channels
Implement SSH connection timeout with explicit error surfacing
Recover/reconnect WebSocket automatically on SSH failure

What Should Happen?

SSH connects or fails with a clear error
Chat remains functional regardless of Code tab state

Error Messages/Logs

none

Steps to Reproduce

Open project in Code tab, initiate SSH connection
SSH hangs — no output, no error
Switch to Chat tab, send any message
Message does not appear

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

none

Claude Code Version

Claude 1.569.0 (49894a)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_