dns-update-change-gate

name	dns-update-change-gate
description	Validate a change for correctness, safety, and reviewability before merge.

1. Restate the behavior change, keep the edit in scope and the PR reviewable, and regenerate the agent docs with go run ./cmd/agentdocgen whenever docs/agents/** changes.
2. Run the smallest tests that prove the change, then review for correctness, idiomatic Go or shell, performance, public wording, and any docs or release impacts; normal code changes still require go test ./..., go vet ./..., and go build ./....