Open your Admin panel and paste into System > Web Settings > Head section HTML
Usage
To download hands, Lobby > Account > Download hand histories...
To clear saved hands, Lobby > Account > Clear hand histories...
How it works
Each hand is saved into your browser's IndexedDB storage and persists across page refreshes and browser restarts. Each player gets a unique database so if you are sharing a computer with another Mavens user the hands won't be overwritten. Note that anyone with access to your browser will be able to inspect the data.
Oh . . . I realized this could be run as a UserScript by anyone without having the admin load it on the backend. Here is a version that works with the Tampermonkey browser extension: https://codepen.io/strobe878/pen/JoPOaxw?editors=1000
You just have to edit line 7 of the script to match your Mavens server URL.
I tested this on win10, Chrome and tampermonkey shows it running, it's enabled and all good but when I select download hand history, I get a popup saying No handhistories available for download. This happens after I left one table and are still sitting at another.
So a couple of things that struck me, I don't know how realistic this is as I don't know the capabilities nor limitations of userscripts and browsers, but here goes...
It would be nice to download the hh in bigger files, i.e. per session at a table. So all e.g. 108 hands on one table as one text file.
Some option for automation would also be cool, e.g. auto download either each hand (as a separate file) as it concludes or all hands as a single file when leaving a table. I think the former might be slightly more annoying than useful though.
One question though, if I refresh the browser now will it clear all hands?
Refreshing (or closing) the browser, logging out, etc., does not clear the hands. That is the main reason I wrote this script because I can never remember to download the history
Given that, the complexity around auto-downloading I think is not worth the effort. At least I'm not inclined to give it go.
I should be able to do a single file per session, that's a good idea.