Auto-fix common Mermaid mistakes in a document, returning the corrected text.
Applies safe rewrites inside Mermaid blocks only — normalizing flowchart
arrows (-> to -->), inserting missing sequence-message colons, and closing
unclosed fences — re-running until the output stabilizes (max 10 passes).
%% comments and a leading YAML frontmatter block are left byte-identical.
Auto-fix common Mermaid mistakes in a document, returning the corrected text. Applies safe rewrites inside Mermaid blocks only — normalizing flowchart arrows (
->to-->), inserting missing sequence-message colons, and closing unclosed fences — re-running until the output stabilizes (max 10 passes).%%comments and a leading YAML frontmatter block are left byte-identical.