Very interesting take on the theme, having scale be more of a mechanic of the reason the gameplay is played in a certain way a nice way of using it, rather than scale be a major factor within the direct gameplay itself.
I was glad to see that there were some more interactions past typing within the game, and I think you got to the mouse movement right as typing on the keyboard was just starting to get rather tedious. Although, I think it would interesting to see some more mechanics that come come out from having to navigate a small computer. I was trying to think of ways that I could optimize my movements by typing in certain ways, then remove characters that I didn't need, but wasn't able to without arrow keys.
But, you wouldn't need to stick it to a computer, it could go on even further with just other tasks. Like having to do some random household task but small, or navigating a phone screen where all input matters. Just ways to get around the seemingly small ideas that come from specifically the computer would be likely beneficial.
With a game like this where errors and mistakes are often and expected, I think you need to lean into them a bit more within the design. As it is right now, any mistake is purely negative, and causing it to be just an annoyance. There are games that allow mistakes to be a part of the gameplay, but not be outright negative or annoying. One thing is with the texts, if you somehow were able to take in more responses, reacting to typos and such could be a entertaining thing to go through. Maybe your computer will auto send a message every X seconds, and (given the player has more quicker ways to move around) you need to type something out within that time, and mistakes are very much expected and add to the humor of the situation. But, I'm not entirely sure what else could be explored to fit this, but if you want to keep the idea of having to carefully navigate and mistakes will be made, you'd need it to less frustrating for player and more of the core design of the game.
The art is very nice! I love the hand drawn theme, and the final picture is very cute :)