refactor(changelog): update unreleased since v1.0.0

changelog.md

@@ -9,6 +9,23 @@ A `### Breaking` section is used in addition to Keep a Changelog's standard sect
 
 ## [Unreleased]
 
+### Breaking
+
+### Added
+
+- Reusable `workflow_call` support for the `Prepare Release` workflow, enabling other repositories to invoke it directly.
+- Automated release artifact publishing in the release workflow for `darwin`, `linux`, and `windows` binaries plus `checksums.txt`.
+- README guidance for release artifacts and examples for reusing vociferate as a composite action or reusable workflow.
+
+### Changed
+
+- Release creation is now idempotent: existing releases for the same tag are updated in place instead of recreated.
+- Release asset uploads now replace existing assets with matching filenames so reruns stay synchronized.
+
+### Fixed
+
+### Removed
+
 ## [1.0.0] - 2026-03-20
 
 ### Breaking