Description

[Description]
nemoclaw <name> destroy removes the sandbox but does NOT clean up the OpenShell gateway or its Docker volume when the last sandbox is destroyed.

[Environment]

• Ubuntu 22.04 / 24.04 (reproduced on both)
• NemoClaw v0.1.0 (curl|bash install)
• OpenShell 0.0.16
• Docker CE

[Steps to Reproduce]1. nemoclaw onboard → create sandbox (e.g. my-assistant)
2. nemoclaw my-assistant destroy → confirm Y
3. nemoclaw list → "No sandboxes registered"
4. docker volume ls | grep openshell → openshell-cluster-nemoclaw
5. lsof -i :8080 → gateway still listening

[Expected Result]
After destroying the last sandbox:

• Docker volume openshell-cluster-nemoclaw should be removed
• Port 8080 should be freed (gateway stopped)
• Or: provide nemoclaw cleanup / nemoclaw gateway destroy command

[Actual Result]

• Sandbox deleted successfully
• Docker volume orphaned (never garbage collected)
• Gateway process continues running on port 8080 indefinitely with 0 sandboxes
• No CLI command exists to clean up gateway without manual Docker commands

[Workaround]
docker stop $(docker ps -q --filter name=openshell-cluster)
docker rm $(docker ps -aq --filter name=openshell-cluster)
docker volume rm openshell-cluster-nemoclaw

[Related]
GitHub #859, #888, #910

Steps to reproduce

No steps provided.

[NVB# 6034865]

[NVB#6034865]

[NVB#6038812]