v4.0.0

4.0.0 (2026-04-14)

Breaking Changes

• replace release-please with go-semantic-release (d4a6764)

release-please requires two workflow runs to create a tag,
but GITHUB_TOKEN pushes don't trigger subsequent workflows.
go-semantic-release does everything in a single run: analyze
commits, create tag, create GitHub release, update changelog.

Chores

• deduplicate .planning gitignore entry (cc56186)
• add .planning to gitignore (8adbbb8)