{
  "checker": {
    "claims": [
      {
        "claim": "The viewer reads the files on every page load.",
        "command": "/usr/bin/env NODE_USE_ENV_PROXY=1 npx -y node@22.19.0 /usr/bin/npm exec --yes --package=uigraph@latest -- uigraph start --port 18448",
        "evidence": "<!doctype html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n\n    <link\n      rel=\"icon\"\n      type=\"image/png\"\n      sizes=\"32x32\"\n      href=\"/icons/icon-dark-32.png\"\n    />\n    <link\n      rel=\"icon\"\n      type=\"image/png\"\n      sizes=\"64x64\"\n      href=\"/icons/icon-dark-64.png\"\n    />\n    <link\n      rel=\"icon\"\n      type=\"image/png\"\n      sizes=\"128x128\"\n      href=\"/icons/icon-blue-128.png\"\n    />\n    <link rel=\"apple-touch-icon\" href=\"/icons/icon-blue-256.png\" />\n\n    <title>UIGraph</title>\n    <meta\n",
        "expected": "The viewer returns its application page.",
        "input": "Start the local viewer and request its root page.",
        "kind": "claim",
        "outcome": "Real input produced the expected result: <!doctype html>",
        "source": "After that, the viewer reads the files on every page load, so refresh the browser to see anything the agent writes later.",
        "source_checked": true,
        "source_file": "README.md",
        "verdict": "yes"
      }
    ],
    "cycle_checks": [
      {
        "claim": "Scheduled or looping main behavior",
        "command": "",
        "evidence": "README inspected; UIGraph is a local viewer and artifact editor with no scheduled or recurring product cycle.",
        "expected": "identify the product trigger",
        "input": "source inspection",
        "kind": "cycle",
        "outcome": "README inspected; UIGraph is a local viewer and artifact editor with no scheduled or recurring product cycle.",
        "source": "repository entry points",
        "verdict": "yes"
      }
    ],
    "details": {
      "argv": [
        "/usr/bin/env",
        "NODE_USE_ENV_PROXY=1",
        "npx",
        "-y",
        "node@22.19.0",
        "/usr/bin/npm",
        "exec",
        "--yes",
        "--package=uigraph@latest",
        "--",
        "uigraph",
        "open",
        "<guest-path>",
        "--port",
        "18447"
      ],
      "kind": "cli",
      "needs_browser": false,
      "needs_credentials": false,
      "returncode": 0,
      "scope": "product operation",
      "stderr": "",
      "stdout": "\nUIGraph viewer is already running at http://127.0.0.1:18447/\nOpening the UIGraph artifacts in <guest-path>\n  1 services \u00b7 0 endpoints \u00b7 0 dependencies \u00b7 2 diagrams\n\u2714 Registered with the viewer (http://127.0.0.1:18447/)",
      "working": true
    },
    "evidence_strength": "readme_checked",
    "example_checks": [
      {
        "claim": "Run the documented background viewer command and then its sync command",
        "command": "/usr/bin/env NODE_USE_ENV_PROXY=1 npx -y node@22.19.0 /usr/bin/npm exec --yes --package=uigraph@latest -- uigraph sync <guest-path>",
        "deferred": false,
        "evidence": "1 services \u00b7 0 endpoints \u00b7 0 dependencies \u00b7 2 diagrams\n\u2714 Registered with the viewer (http://127.0.0.1:8447/)",
        "expected": "The project is registered in the local viewer.",
        "input": "Open the sample repository and synchronize its .uigraph.yaml artifacts.",
        "kind": "example",
        "outcome": "command completed successfully",
        "returncode": 0,
        "source": "README.md#Quick start: uigraph and uigraph sync",
        "verdict": "yes"
      }
    ],
    "status": "PASS"
  },
  "deviations": [
    "Ubuntu apt supplied Node 18, so npx Node 22 provided the supported runtime.",
    "Global npm install initially failed with EACCES; used npx npm exec from /tmp."
  ],
  "fault_owner": null,
  "main_blocker": null,
  "operation": "Run the documented UIGraph viewer command and register the sample repository artifacts",
  "operation_scope": "Local viewer startup and artifact registration on Node.js 22; Python 3.12.3 verified against the available environment",
  "outcome": "working",
  "plain_failure": null,
  "steps": [
    "Installed Node.js/npm from Ubuntu packages and pnpm 12.9.1.",
    "Used npx Node 22 because Ubuntu supplied Node 18, below the README minimum.",
    "Ran the README documented viewer command; confirmed the local page returned HTML.",
    "Ran README sync example; it reported 1 service, 2 diagrams and registered the repository.",
    "Checker replay validated probe, README claim, example and cycles."
  ],
  "stuck_step": null,
  "suggested_fix": null
}