Использовать pytest-benchmark в экспериментах

Зафиксировать использование [pytest-benchmark](https://pypi.org/project/pytest-benchmark/) в экспериментах как требование.

Locate the course materials and experiment instructions where benchmarking is described or performed, then review the linked pytest-benchmark project. Done means the relevant course guidance explicitly requires pytest-benchmark for experiments and the requirement is consistent across the affected materials.

Written by the indexing model from the issue text.