deleted-backwards-compatibility-code

name	deleted-backwards-compatibility-code
description	Hard blocker — flag removal or relocation of code that manages cluster state owned by previous controller versions.
license	Apache-2.0
metadata	{"copyright":"The Kubernetes Authors"}

Skill: Deleted Backwards-Compatibility Code

Deleted backwards-compatibility code — this is a hard blocker. If the diff removes or relocates code that manages cluster state owned by previous versions (finalizer cleanup, annotation/label migration, ownership reconciliation, CRD field handling), think through a rolling upgrade: objects created by the old version must still be reconciled to a terminal state by the new version — finalizers removed, obsolete annotations dropped, status converged. Deleting finalizer-removal logic, for example, will leave pre-existing objects stuck forever.