joren b342eeaeff Refactor(Doolhof ADT): Encapsulate maze as message-passing ADT without graphics
Pure logic ADT with grid data, cell predicates (muur?, muntje?, etc.),
mutators (cel-set!, verwijder-deur!), and voor-elke-cel iterator.
All graphics code removed - drawing responsibility moved to adt-teken.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-23 10:50:32 +01:00
2026-03-23 10:28:54 +01:00
2026-03-23 10:28:54 +01:00
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