HTML report

The offline React app renders a Reforge report: Issues, nested Evidence and measurements, typed Dataflow witnesses, per-analysis coverage, suppression totals, and optional baseline comparison. It does not render raw metrics, Flow IR, arbitrary JSON extensions, or internal ontology fields.

After frontend changes run:

cd web/report-app
npm ci
npm test
npm run test:e2e
npm run build

Commit the source together with regenerated assets/report-app.js and assets/report-app.css plus their synchronized crates/reforge-output/assets copies; the HTML renderer embeds the package-local assets and requires no server or network.