Thanks for the kind words!
Interesting idea, hadn't really considered the standalone concept. Is the desire for a self-hosted portal related to privacy? If so, the extension doesn't store any data, but if you want full assurance, you can self-host the API that's in the repo [1] and install the unpacked extension yourself [2].
[1] https://github.com/samueldobbie/troogl-extension/tree/main/a... [2] https://stackoverflow.com/questions/24577024/install-chrome-...