Need to provide a reasonable way to allow the user to keep track of launched processes

Version: 1.139.0-insider
Commit: https://github.com/microsoft/vscode/commit/4fa9fcf245ad90eb1f21fae5ed0511515e068b1d
Date: 2026-09-17T15:56:52Z
Electron: 43.6.0
ElectronBuildId: 15274685
Chromium: 150.0.7871.250
Node.js: 24.20.0
V8: 15.0.245.31-electron.0
@github/copilot: 1.0.84-5
@github/copilot-sdk: 1.0.13
OS: Darwin arm64 25.6.0

1. use the copilot harness
2. ask the agent to start a server process (like in https://github.com/microsoft/vscode/issues/336681 to open a resource in a browser via a web server)

-> naturally the server keeps running after the session finishes; however in yolo mode and as a side effect of running scripts I might miss that a server was started

We should have support to track launched processes, for example we could list them in a drop down in the artifacts section of the agents window similar to what we do we subagents. Need also a solution for the editor window.

Start by reading the agents window's artifacts section and the editor window experience, using issue #336681 for the server-process scenario. Define how launched processes remain visible after a session ends, including a dropdown similar to subagents and an editor-window solution. Done means users can discover and track processes started by agents or scripts.

Written by the indexing model from the issue text.