Refactor: Extract helpers to eliminate duplication (89 lines) (#47)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: wham <448809+wham@users.noreply.github.com>
Co-authored-by: Tomáš Veselý <wham@users.noreply.github.com>

Author: Copilot