I highly recommend making the messaging simpler before you post it on HN.
That video is atrocious. At first I was upset at how much time you wasted on flashy poorly executed effects. Then I realized the entire video is like that. If you're going to show only one word at at time, it has to be something short like a 3 word tagline, not entire sentences. It's impossible to follow, you have so many cuts, so fast, padded with things like "woah, a browser".
I still don't really understand what the app even is. A lot of it is poorly worded, or shouldn't be there.
"Right-clicking to add a task" is not a feature that should be on the landing page. Unless you mean you can right click a tab that's not running your app. Nor should there be things like "Runs in Chrome" - so is it an extension, chrome only?
My 2c would be to make things as simple as possible for the user by cutting out ambiguity, and focusing on user stories.