This is a really good game loop! I'd love to see if it could be expanded to something more akin to a long-term clicker game with a little more interactivity than a typical clicker game.
Maybe something like having your farm tools destroy growing crops, so you have to plan around their growth times, or making it so you have to fill the water can so spam clicking is less efficient regardless of the tool's upgrade levels.
Interesting little experience... Good job!