adf-codec/corpus/README.md

The corpus

One directory per contract kind, each landing with its milestone:

• round-trip/ — <name>.json + <name>.md: the markdown adfToMarkdown must emit for that document, byte for byte, and that markdownToAdf must read back to it (AGENTS.md §2). Grouped by what the fixture exercises.
• normalization/ — <name>.md + <name>.json: markdown input, and the document markdownToAdf must build from it, which must in turn emit and read back to itself. The markdown is not canonical.
• errors/ — <name>.md: markdown input that must not convert. A <name>.error beside it pins which error.
• real-payloads/ — <name>.json: sanitized live ADF, round-tripped ADF→markdown→ADF. No expected markdown.
• commonmark-spec/ — spec.json (the CommonMark 0.31.2 suite, vendored byte-exact) and exceptions.json (the examples a known divergence exempts, keyed by check and example with a reason).

JSON is editor-normal (AGENTS.md §2), two-space indent, keys sorted. spec.json is the vendored, upstream machine-readable suite (CommonMark 0.31.2, CC-BY-SA-4.0, © John MacFarlane) and is not re-serialized by the corpus gate.