* test(2130): add failing tests for frontmatter body --- sequence mis-parse
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix(2130): anchor extractFrontmatter regex to file start, preventing body --- mis-parse
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>