{
  "version": 1,
  "notice": "References were checked for file existence and line bounds, not semantic truth. Excerpts may contain private information: review before publishing.",
  "evidence": [
    {
      "diagram": "overview",
      "node": "read",
      "path": "main.mjs",
      "start": 2,
      "end": 5,
      "excerpt": "const input = process.argv[2];\nif (!input) { console.error('Usage: node main.mjs file.md'); process.exit(1); }\ntry {\n  const markdown = await readFile(input, 'utf8');"
    },
    {
      "diagram": "overview",
      "node": "extract",
      "path": "main.mjs",
      "start": 6,
      "end": 7,
      "excerpt": "  const links = [...markdown.matchAll(/\\[[^\\]]+\\]\\((https?:\\/\\/[^\\s)]+)\\)/g)].map(match => match[1]);\n  const unique = [...new Set(links)];"
    },
    {
      "diagram": "overview",
      "node": "output",
      "path": "main.mjs",
      "start": 8,
      "end": 8,
      "excerpt": "  console.log(JSON.stringify(unique, null, 2));"
    },
    {
      "diagram": "architecture",
      "node": "file",
      "path": "main.mjs",
      "start": 2,
      "end": 5,
      "excerpt": "const input = process.argv[2];\nif (!input) { console.error('Usage: node main.mjs file.md'); process.exit(1); }\ntry {\n  const markdown = await readFile(input, 'utf8');"
    },
    {
      "diagram": "architecture",
      "node": "parser",
      "path": "main.mjs",
      "start": 6,
      "end": 7,
      "excerpt": "  const links = [...markdown.matchAll(/\\[[^\\]]+\\]\\((https?:\\/\\/[^\\s)]+)\\)/g)].map(match => match[1]);\n  const unique = [...new Set(links)];"
    },
    {
      "diagram": "architecture",
      "node": "stdout",
      "path": "main.mjs",
      "start": 8,
      "end": 8,
      "excerpt": "  console.log(JSON.stringify(unique, null, 2));"
    },
    {
      "diagram": "quickstart",
      "node": "runtime",
      "path": "README.md",
      "start": 7,
      "end": 7,
      "excerpt": "Requires Node.js 22+; no packages to install."
    },
    {
      "diagram": "quickstart",
      "node": "run",
      "path": "README.md",
      "start": 8,
      "end": 9,
      "excerpt": "From this fixture directory:\n`node main.mjs sample.md`"
    },
    {
      "diagram": "quickstart",
      "node": "save",
      "path": "README.md",
      "start": 9,
      "end": 10,
      "excerpt": "`node main.mjs sample.md`\nThe output is a JSON array printed to standard output."
    }
  ]
}