- Add scripts/changelog-lint.sh to validate [Unreleased] section has entries
- Remove unused imports from cdc.rs, explainer.rs, group_sync_worker.rs
- Fix unused variables in scatter.rs tests
- Use fully-qualified path for MockNodeClient in anti_entropy.rs tests
The changelog lint script enforces the plan §7 CHANGELOG maintenance
pattern by checking that the [Unreleased] section gained at least one
entry under standard subheadings (Added, Changed, etc.) since the last
release. This prevents silent CHANGELOG drift.
Closes: miroir-uyx.2
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>