Write PR review workflow

[jdelfino]

Write the PR review GitHub Action that triggers three reviewer agents on PR events.

File

.github/workflows/pr-review.yml

What

• Trigger: PR opened or synchronized (new commits pushed)
• Parse fixes #N from PR description to determine parent issue
• Run 3 reviewer skills in parallel via claude -p:
  • reviewer-correctness
  • reviewer-tests
  • reviewer-architecture
• Each reviewer creates child issues under #N with severity labels
• Blocking findings are set as blocking #N via GitHub dependency API

Implementation

• Use claude-code-action or direct claude -p invocation
• Each reviewer runs as a separate job for parallelism
• Needs ANTHROPIC_API_KEY secret

Dependencies

• Blocked by Write three reviewer skills #11 (reviewer skills)
• Blocked by Write API surface change guardrail #21 (workflow config)

Reference

• docs/design.md: PR Review Workflow section (Layer 3)