This is great! I like it a lot better than tv.garden
Two issues i had:
1. Closed captions didnt work on firefox (windows) - the menu did appear where im suppposed to be able to select a cc option but i cant actually click on any of them
2. Closed captions did work on chrome (windows) but i could only just barely click the menu icon; putting the mouse over most of the menu buttons caused them to disappear, so i had to click the very lowest part of the button
but otherwise terrific, especially if this is updating from github live as you say; lots of channels were dead on tv.garden (maybe its different now - i dont actually watch tv that often unless an event is going on like moon landing or something)