feat(paperreview): add paperreview.ai adapter

[Lr-2002]

Description

Add a new public paperreview adapter with three commands:

• opencli paperreview submit
• opencli paperreview review
• opencli paperreview feedback

The adapter supports PDF validation, submission, review lookup by token, and review-quality feedback. This PR also adds adapter docs, README discoverability updates, focused adapter tests, and a dry-run E2E check.

Related issue:

Type of Change

• 🐛 Bug fix
• ✨ New feature
• 🌐 New site adapter
• 📝 Documentation
• ♻️ Refactor
• 🔧 CI / build / tooling

Checklist

• I ran the checks relevant to this PR
• I updated tests or docs if needed
• I included output or screenshots when useful

Documentation (if adding/modifying an adapter)

• Added doc page under docs/adapters/ (if new adapter)
• Updated docs/adapters/index.md table (if new adapter)
• Updated sidebar in docs/.vitepress/config.mts (if new adapter)
• Updated README.md / README.zh-CN.md when command discoverability changed
• Used positional args for the command's primary subject unless a named flag is clearly better
• Normalized expected adapter failures to CliError subclasses instead of raw Error

Screenshots / Output

Validation run:

npm run typecheck
npx vitest run --project adapter src/clis/paperreview/commands.test.ts src/clis/paperreview/utils.test.ts
npm run build
npx vitest run --project e2e tests/e2e/public-commands.test.ts -t "paperreview submit dry-run validates a local PDF without remote upload"
node dist/main.js list | sed -n '/^  paperreview$/,/^$/p'
node dist/main.js paperreview submit /tmp/DeepReviewer-v2-paperreview.pdf --email wang2629651228@gmail.com --venue RAL --dry-run true -f json

Key output:

paperreview
  feedback [public] — Submit feedback for a paperreview.ai review token
  review [public] — Fetch a paperreview.ai review by token
  submit [public] — Submit a PDF to paperreview.ai for review

{
  "status": "dry-run",
  "file": "DeepReviewer-v2-paperreview.pdf",
  "email": "wang2629651228@gmail.com",
  "venue": "RAL",
  "message": "Input validation passed. No remote request was sent."
}

[Astro-Han]

Interesting use case! One thought: since all three commands are browser: false public API calls, this might be a good fit for the plugin system (opencli-plugin-paperreview). The plugin guide uses the same YAML/TS format with automatic discovery.