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Mirror vimwiki's html_header_numbering / html_header_numbering_sym: top-level headings at or below the start level get a dotted section number (1, 1.1, 1.2, ...) with a configurable trailing symbol. Off by default (level 0). Nested headings in lists/quotes stay unnumbered, matching upstream's document-level-only scan. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>