Add coverage#273

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Phlya wants to merge 6 commits intomasterfrom

Commits on Jul 15, 2025

Commits on Aug 8, 2025

Fix coverage for both sides
Phlya
committed

Commits on Aug 13, 2025

Address comments, e.g. "both" option for side, and improve help text for shift opt
Phlya
committed

Commits on Aug 18, 2025

remove wrong import
Phlya
committed