Add SSH Remote Development Support (Remote Hosts)

What variant of Codex are you using?

Codex App

What feature would you like to see?

I would like to request support for SSH-based remote development.

Currently, Codex App appears to only support local development environments. However, in many real-world workflows, development is performed on remote machines such as:
• Linux servers
• GPU workstations
• Cloud instances (AWS, GCP, etc.)
• On-premise compute clusters

Proposed functionality:
• Connect to remote hosts via SSH (similar to VS Code Remote SSH)
• Open and edit files directly on remote machines
• Run Codex agents on remote codebases
• Execute commands in remote environments
• Support multiple SSH configs (~/.ssh/config)

Why this is important:
Remote development is essential for:
• AI / deep learning workflows (large models, GPU dependency)
• High-performance computing environments
• Production-like or isolated systems

Without SSH support, Codex App is limited to local-only usage and cannot fully replace existing tools like VS Code in professional environments.

Adding this feature would significantly improve usability and adoption for advanced users.

Additional information

_No response_