The quality reviewer named three specific input probes for the C1/C2/
C3 fixes. Encode each as a verbatim test so future regressions on
those exact inputs surface immediately:
- probe_overflow: parse_blocks(b"# h\nbody\n", u32::MAX) → empty +
Warning::ExtractFailed.
- probe_list_escape: list with embedded code block → single List
block, two items.
- probe_empty_heading: `# \n# Real\nbody\n` → body's heading_path is
`["Real"]`.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>