Add Agent Zero topology workspace

[TerminallyLazy]

Summary

• add a Cytoscape-backed Topology tab for local and remote Agent Zero instances
• persist node roles/layout and support local Docker network connect/disconnect
• add A2A setup, probing, node-to-node messaging, and read-only live activity previews from bounded logs

Verification

• node --check shell/main.js
• node --check shell/preload.js
• node --check shell/docker_manager/index.js
• node --check shell/docker_adapter/impl/DockerodeDocker.mjs
• node --check app/docker_manager.js
• node --check app/components/docker-manager/topology/topology.js
• node --test app/components/docker-manager/topology/topology.test.mjs
• node --test shell/docker_manager/topology.test.js
• node --test shell/docker_adapter/dockerode_docker.test.mjs
• node --test app/components/docker-manager/sidebar/sidebar.test.mjs
• git diff --check
• git diff --cached --check