Fix pytest version conflict in CI/CD

Run CI/CD tests

Remove pages.yml - not supported on GitVerse

Trigger CI/CD tests

Переход на GitVerse CI/CD

Добавлены CI/CD workflows для GitVerse

Генератор вариантов заданий для студентов

Запрос на слияние 'feature' (#1) из feature в master

create README.md

update dev/solution.cs

update demo/output.txt

upload files

create README.md

Apply code review improvements: add exception handling, recursion limits, XML documentation, fix RemoveEdge, replace LINQ with manual implementations

dd demo folder with artifacts confirming application functionality and spec compliance

create spec/codex.md