Minimal to-do app for macOS 14+, inspired by Things 3.
Requires Swift 6 (Command Line Tools are enough, Xcode is not needed).
make run # build and open build/Doit.app
make install # copy to /Applications
make testTasks live in ~/Library/Application Support/doit/todos.json. Use another file with open build/Doit.app --args -storeURL /path/to/todos.json.