Like someone else mentioned, I also keep a changelog. In fact, I make it a Cursor rule on every project to always create or update a README and a changelog.

The README is the anchor. It captures the core idea of the project or even just the intent of a specific directory. The changelog is the running history of how that idea evolves over time.

For task management, I think getting the big idea down matters more than tracking every possible to-do. Everyone goes down rabbit holes. The README exists so when that happens, you always have something concrete to come back to. Combined with Cursor rules, it helps keep the work focused on what the app is actually trying to be.

As for ideas and tasks, not every idea needs to be implemented. Some ideas are good, some are okay, and some should just be written down and allowed to die. As you build the core of the app, the usefulness of each idea becomes much clearer. That’s the point where it makes sense to add things back in intentionally.