[BUG] Claude Code Desktop SSH to Hostinger KVM4 VPS - process.spawn exits with code 1 on every message

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?

Environment:

• Claude Code Desktop: latest
• OS: Windows 11
• VPS: Hostinger KVM4, Ubuntu 24.04 LTS
• Claude Code on server: v2.1.131
• ccd-cli version: 2.1.128

What happens:
Every message sent via SSH remote session crashes with "Claude Code process exited with code 1".
SSH connection appears to establish successfully but crashes when spawning ccd-cli.

What I've tried:

• SSH key authentication (no passphrase) ✅
• Added server to known_hosts ✅
• Ran ccd-cli first-run wizard manually as non-root user ✅
• Upgraded Node.js to v20 ✅
• Cleared /root/.claude/remote/ cache ✅
• Created non-root user (stimulate) and ran first-run wizard ✅
• Updated SSH config with StrictHostKeyChecking no ✅
• Firewall open on port 22 ✅

Server log from /root/.claude/remote/remote-server.log:

Claude remote server listening on /root/.claude/remote/rpc.sock
2026/05/07 09:11:22 [process.Manager] Process started, PID=25917, command=/root/.claude/remote/ccd-cli/2.1.128
2026/05/07 09:11:22 [process.Manager] drainStdin: 951 bytes, preview "{\"request_id\":\"yyyrzagz74h\",\"type\":\"control_request\",\"request\":{\"subtype\":\"initialize\"..."
2026/05/07 09:11:23 [process.Manager] Process exited with code 1

Expected: Message is processed and response returned
Actual: ccd-cli spawned, receives initialize payload, immediately exits with code 1

Note: Running /root/.claude/remote/ccd-cli/2.1.128 --version works fine.
Running it with --dangerously-skip-permissions fails with "cannot be used with root/sudo privileges".
First-run wizard completed successfully as non-root user (stimulate) but SSH connection still crashes.

What Should Happen?

i should be able to log into ssh on external server via claude code desktop

Error Messages/Logs

Steps to Reproduce

1

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.128

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_