Sync changes, that were made on lab#13

Merged

NF-coder merged 3 commits intodevfrom

Sep 21, 2025

Commits on Sep 15, 2025

Merge pull request #12 from NF-itmo/dev
NF-coder
authored

Commits on Sep 16, 2025

Multiple small imprivements. They won't ruin all project, trust me
NF-coder
committed
codestyle improvements + extended validation for Y in frontend
NF-coder
committed