Add Markdown → HTML conversion (closes #11)#49
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Introduces `MarkdownDocument.toHTML(options:)` backed by cmark-gfm, a new `HTMLOptions` type with per-feature GFM extension toggles via `MarkdownExtensionOptions`, and a `md-utils convert to-html` CLI command. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
MarkdownDocument.toHTML(options:)backed directly by thecmark-gfmrenderer — no double-parsing, no AST traversalMarkdownExtensionOptions(OptionSetwithInt64rawValue) as a public API mirror ofCMExtensionOption, keeping cmark as an implementation detailHTMLOptions(ConversionOptions-conforming) withincludeFrontmatter,wrapInDocument,hardBreaks,allowUnsafeHTML,smartPunctuation, and per-extension togglesmd-utils convert to-htmlCLI command with--wrap-document,--include-frontmatter,--hard-breaks,--allow-unsafe-html,--smart-punctuation, and--no-Xflags for each GFM extension (tables, autolinks, strikethrough, tagfilters, tasklist)Supported features (default options)
--no-tables--no-autolinksStrikethrough--no-strikethrough--no-tagfilters--no-tasklistTest plan
swift build— clean, no errorsswift test— 806 tests, 0 failuresecho "# Hello\n\n**World**" | swift run md-utils convert to-html— correct HTML output--wrap-documentproduces<!DOCTYPE html>skeleton--no-tablespasses table markdown through as plain paragraphs<del>, task lists →<input type="checkbox">🤖 Generated with Claude Code