Capture changeset entries before 'changeset version' deletes them,
distill deterministic notes post-version, and replace the version's
section in the root CHANGELOG with curated end-user notes.
Merges FN-3311 work into the release pipeline: adds a version notes extractor with tests and integrates GitHub release creation into the release script, plus a minor CSS design token consistency fix in the dashboard.
Fusion-Task-Id: FN-3311