Nice work! What I noticed:

• please remove the requirements.txt file. As anything in there causes it to be (re-)installed in the environment of the app itself and we already ship websocket-client with the app.
• it would be nice to have some info text in the action config area, telling the user to install the vscode extension (for inspiration check out the Discord plugin)
• for consistency reasons please rename your plugin to don't include StreamController in the name. Otherwise it's a bit weird in the action selector if only one plugin starts with "StreamController!

Feel free to ping me if you have any questions or are ready for merge.

Sounds good! Will do. Thanks for making this btw.

Great! Just update the hash when you're ready.

ok good to go now I think! Also I moved the hostname/portnum settings out of the Actions into a new plugin wide settings screen.

Nice work!