SchedunApp/Schedun — reverse-engineered prompt

Build me a desktop app called Schedun for university students who export their class data from Neptun into Excel files.

The app should help a student plan the best possible semester schedule from the subjects and courses they choose. They should be able to import files from an Exports folder, refresh the data, pick subjects, then generate different schedule options. Let them filter by max days at university, earliest start time, latest finish time, max number of results, lunch break, and an optimization mode that can make the schedule compact or balanced.

Also add search pages for teachers and students using the exported Excel lists. A user should be able to search a name, select their classes, and visualize that person’s schedule.

Include a simple license activation screen where a key is entered and tied to the current computer. Add basic setup guidance inside the app that explains the required Exports folders for Teacher, Students, and Schedule. Keep the interface clean and practical.