PR Review Fixer

Fetch unresolved PR comments, validate each issue, create a fix plan, implement fixes, and verify CI checks pass (tests, lint, build).

Workflow

1. Fetch PR Comments

# Get PR info
PR_NUM=$(gh pr view --json number --jq '.number')

# Get all PR comments via GraphQL (code-level AND PR-level)
gh api graphql -f query='
  query($owner: String!, $repo: String!, $pr: Int!) {
    repository(owner: $owner, name: $repo) {
      pullRequest(number: $pr) {
        # Code-level review comments (file/line specific)
        reviewThreads(first: 100) {