Perhaps there could be a way to include a “Completed tasks” section at the bottom of a project, this way it could function more like a traditional todo app.
w/ a “completed tasks” section, when you mark something as done instead of just adding a checkmark to the note it could collapse and show up only when you click on the completed tasks section. Right now whenever I complete something, i also have to delete it, which makes it less convenient to retrieve if ever I want to see work already done.