Scope Markdown spacing, bare-link and repeated-heading exceptions to the
generated changelog, matching GitHub's native release-note output. Keep normal
rules for all other documentation. Verified actual generated notes and two
consecutive native sections, plus repository Markdown and internal links.
Refs: #21
Co-Authored-By: OpenAI GPT-6 Codex <noreply@openai.com>
Signed-off-by: James Maes <james@kof22.com>