The reason you might not want to filter on the watch is some apps tend to 'spam' the notifications - maybe they update the notification every second, and would end up sending notifications to the watch constantly. Ideally you want to be able to ignore those before they even get sent to the watch so they don't bog it down/drain your battery
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Yes - if you enable GitHub pages (https://www.espruino.com/Bangle.js+App+Loader) then anyone can install it and try if they go to your page.
The reason you might not want to filter on the watch is some apps tend to 'spam' the notifications - maybe they update the notification every second, and would end up sending notifications to the watch constantly. Ideally you want to be able to ignore those before they even get sent to the watch so they don't bog it down/drain your battery