A study plan is easy to postpone when it only exists as a list of topics. Turning that plan into calendar data gave each phase a place in time and made the work easier to return to.
The roadmap generator was deliberately simple: define phases, assign milestones, calculate dates, and export an iCalendar file that could be imported into an existing calendar.
Structure makes intention visible
The useful part was not the file format by itself. It was making the plan specific enough to become appointments, review points, and visible progress instead of remaining an abstract ambition.