The three PR templates still asked contributors to tick `CHANGELOG.md
updated`, contradicting the post-#2978 rule (documented in
CONTRIBUTING.md and enforced by scripts/changeset/lint.cjs) that
`CHANGELOG.md` must not be edited directly.
Each checkbox now references `npm run changeset` with the appropriate
`--type` (Fixed/Changed/Added) and notes the `no-changelog` opt-out
label where applicable, so `gh pr create` users land in the correct
workflow by copy-paste.
Closes#3006
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
