v2: static results website (Astro)

[ThePlenkov]

Issue #14 — Static results website (Astro)

Task

Build a static website (Astro) under packages/web/ that reads
results/summary.json and renders the per-scenario pass-rate view.
The site is a static export; no server runtime.

Context

• Repo: https://github.com/abapify/adt-bench
• Read first:
  • packages/report/src/report.ts (the Summary shape)
  • docs/result-schema.md
  • docs/project-views.md (the 6 planned project views)
  • docs/backlog.md
• Background: v1 prints a console report. v2 turns that into a
  browsable website so anyone (including non-CLI users) can compare
  runs.

Out of scope

• Real-time updates. The site is a static export of the latest
  summary.json.
• Authentication or per-user views. Public read-only.

Files to add or modify

• packages/web/package.json (new)
• packages/web/astro.config.mjs (new)
• packages/web/src/pages/index.astro (new) — pass-rate table.
• packages/web/src/pages/trials.astro (new) — trial statistics.
• packages/web/src/pages/agents.astro (new) — agent leaderboard.
• packages/web/src/components/RunCard.astro (new)
• packages/web/public/summary.json — copied from results/summary.json
  at build time.
• packages/web/scripts/build-data.mjs (new) — copies results/summary.json
  and any per-run files into packages/web/public/.
• Root package.json — add web:dev and web:build scripts.
• docs/website.md (new) — design notes.
• README.md — link to the website.

Steps

1. pnpm add -D astro at the root.
2. Scaffold the packages/web/ directory per the Astro "Hello World"
   template; keep the structure minimal.
3. Write scripts/build-data.mjs:
   • Read results/summary.json.
   • For each runs[], copy result.json to
     packages/web/public/runs/<run_id>/result.json and
     transcript.jsonl similarly.
   • Write packages/web/public/summary.json.
4. Author the 3 Astro pages (Table layout, no interactivity needed for
   v1).
5. Add pnpm web:dev and pnpm web:build scripts.
6. Add docs/website.md describing the planned views (mirroring
   docs/project-views.md).
7. Update the README with a "Website" section.

Deliverables

• pnpm web:dev starts a local dev server with the latest summary.json.
• pnpm web:build produces a static dist/ in packages/web/dist/.
• 3 pages: index, trials, agents.
• docs/website.md design notes.

Test plan

• Manual: pnpm web:dev and visit http://localhost:4321.
• Visual check: the per-scenario pass-rate table matches the console
  output from bench:report.

Acceptance gate

• pnpm web:dev starts without errors.
• The 3 pages render with sample data (commit a sample summary.json).
• pnpm verify still exits 0 (the web build is not part of verify in
  v1.1).

Definition of done

• Astro project scaffolded.
• 3 pages implemented.
• pnpm web:dev and pnpm web:build work.
• docs/website.md written.
• README updated.
• Conventional commit: feat(web): static Astro results website.
• PR opened; this issue closed.

Dependencies

Blocked by #7 (multi-trial reporting — the website needs aggregates to
be interesting).

Blocks #15 (the connector-comparison dashboard is a superset of this).