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

update README.md

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

update README.md

create README.md

upload files

delete demo/cursor_.md

update dev/solution.cs

upload files

create demo/run.txt

create dev/solution.cs

delete spec/c

upload files

create spec/c