@taskproof/report

Renders a run into a single self-contained HTML file — the artifact CLAUDE.md calls "the product": the matrix (task × model, pass@k + cost per cell), the per-run trace (agent narration, the actions it took, and the screenshot after each step), the deterministic assertion results (the exact thing that passed or failed), and totals.

taskproof run writes a run-manifest.json (the graded matrix — it carries the pass@k thresholds the individual artifacts don't); taskproof report feeds that manifest plus the per-run artifacts here.

import { buildReportHtml, parseRunManifest } from '@taskproof/report';

const html = buildReportHtml({
  manifest: parseRunManifest(manifestJson),
  artifacts, // RunArtifact[]
  resolveScreenshot: (path) => `data:image/png;base64,${readFileSync(path).toString('base64')}`,
});

Pure and dependency-light: no DOM, no templating engine, no JS in the output (collapsible traces use native <details>). Screenshots are injected as data URIs so the report is one portable file. v0 is deliberately plain — legible over pretty.

Pre-release.