[Feature Request] Support for concurrent Claude Code sessions via ssh(Port Conflict / Multiplexing)

[chen-001]

Hi,

First of all, thank you for this fantastic tool! It really makes using Claude Code feel like antigravity—the experience is great.

Context I am currently developing on a remote server via SSH. I have configured my environment variables in .bashrc as follows:

export PLANNOTATOR_REMOTE=1
export PLANNOTATOR_PORT=19432

This works perfectly for a single instance; I can view the Claude Code plan by accessing port 19432.

The Issue The problem arises when I try to run multiple Claude Code processes simultaneously. The second and third processes encounter port conflicts with the first one, meaning I can't view their plans.

Proposed Solution Currently, PLANNOTATOR_PORT does not appear to support a list of ports. It would be perfect if we could handle concurrency in one of the following ways:

Port Range/List: Allow the variable to accept multiple ports, e.g., export PLANNOTATOR_PORT=19432,19433,19434,19435.

UI Multiplexing (Ideally): A more elegant solution might be to keep the single port (19432) but update the web UI to include tabs or sub-pages. This way, we could switch between different active Claude Code plans within the same interface.

Thanks again for your work on this project!