name: pr-review-loop description: Monitor PR for code review, analyze feedback with AI, implement fixes, and merge when approved with CI green.

PR Review Loop

Goal

Automate the PR review cycle: wait for review → analyze feedback → implement fixes → push → repeat until approved and CI passes → merge.

Input

PR Number - The GitHub PR to monitor (required)
Repository - Owner/repo (auto-detected from git remote if not provided)
Task Context - Optional link to task list for updating status

Output

PR merged and branch deleted (success path)
Or: PR left open with detailed status comment (if human escalation needed)
Task list updated with completion status (if task context provided)

Process

Phase 1: Initial Setup

Validate PR Exists
```
gh pr view [PR-number] --json number,state,title,headRefName
```
- Confirm PR is open
- Capture branch name for later operations
Check Initial CI Status
```
gh pr checks [PR-number] --json name,state,conclusion
```
- Log current CI state
- Note any already-failing checks

Phase 2: Review Polling Loop

Poll for Reviews and Comments

IMPORTANT: Feedback can appear in two places:
- Formal Reviews: Via GitHub's review system (APPROVED, CHANGES_REQUESTED, COMMENTED)
- PR Comments: Direct comments on the PR conversation thread
Both must be checked as reviewers often leave feedback as comments without formal review submission.
```
# Check formal review state
gh api repos/[owner]/[repo]/pulls/[PR-number]/reviews \
  --jq '[.[] | {state: .state, user: .user.login, body: .body, submitted_at}]'

# Check PR conversation comments (CRITICAL - reviewers often use this)
gh pr view [PR-number] --json comments \
  --jq '.comments[] | {body: .body, author: .author.login, createdAt}'
```
Polling Strategy:
- Check every 60 seconds
- Maximum duration: 8 hours (480 checks)
- Continue until:
  - Formal review with APPROVED or CHANGES_REQUESTED state appears, OR
  - New PR comments detected since last check (analyze for feedback), OR
  - Timeout reached
Status Updates:
- Every 5 minutes: Log "Still waiting for review on PR #[number]... (checked N times)"
- After 30 minutes: Add PR comment "Waiting for code review. Please review when available."
- After 2 hours: Add PR comment "Still awaiting review after 2 hours. Ping @reviewers if urgent."
- After 8 hours: Add PR comment "Review polling timeout reached (8 hours). Please notify when review is complete." and escalate to user
Timeout Escalation:
```
# After 480 checks (8 hours)
gh pr comment [PR-number] --body "⏱️ Review polling timeout reached (8 hours).

I've been monitoring this PR for review feedback but haven't received any.
Please notify me when review is complete and I'll resume monitoring.

To resume: Run \`/pr-review-loop [PR-number]\`"

# Log to user
echo "❌ PR #[number] review timeout after 8 hours. Manual intervention needed."
# Exit with status code indicating timeout
exit 124  # Standard timeout exit code
```

Fetch All Review Feedback

# Get inline review comments (file-specific)
gh api repos/[owner]/[repo]/pulls/[PR-number]/comments \
  --jq '[.[] | {path: .path, line: .line, body: .body, user: .user.login, created_at}]'

# Get PR conversation comments (ALREADY fetched in step 3, analyze here)
# Parse for review-like feedback even if not formal review

Phase 3: AI Feedback Analysis

Analyze Review Comments with AI

For each review/comment, classify as:

Category	Criteria	Action
BLOCKING	"must fix", "blocker", "breaks", "security issue", "won't approve until", explicit CHANGES_REQUESTED	Must address before merge
IMPORTANT	"should", "please consider", "would be better", suggestions with rationale	Address if reasonable effort
NIT	"nit:", "minor:", "optional:", style preferences, typos	Address if trivial, else note
QUESTION	Questions about implementation, "why did you...?"	Respond with explanation
PRAISE	"LGTM", "nice", "good work", positive feedback	Acknowledge, no action needed

AI Analysis Prompt:

Analyze this code review comment and classify it:

Comment: "[comment text]"
File: [file path] (line [line number])

Classify as: BLOCKING | IMPORTANT | NIT | QUESTION | PRAISE

Provide:
1. Classification with confidence (high/medium/low)
2. Summary of what's being requested
3. Suggested fix approach (if applicable)
4. Estimated effort (trivial/small/medium/large)

Generate Gap Analysis

Create structured analysis:

## PR #[number] Review Gap Analysis

**Review State:** CHANGES_REQUESTED | COMMENTED | APPROVED
**CI Status:** passing | failing | pending
**Generated:** [timestamp]

### Blocking Issues (Must Fix)
- [ ] [File:line] - [Summary] - [Suggested fix]

### Important Issues (Should Fix)
- [ ] [File:line] - [Summary] - [Suggested fix]

### Nits (Optional)
- [ ] [File:line] - [Summary]

### Questions to Answer
- [ ] [Question] - [Suggested response]

### Verdict
- **Ready to Merge:** No
- **Blocking Count:** N issues
- **Fix Complexity:** [trivial/small/medium/large]

Phase 4: Fix Implementation Loop

If Blocking Issues Exist → Implement Fixes

For each blocking issue:

a. Read the relevant file
```
# Context around the issue
sed -n '[start],[end]p' [file-path]
```
b. Implement the fix
- Use appropriate agent based on issue type:
  - Code logic: tdd-developer
  - Security/safety: reliability-engineer
  - Architecture: technical-planner
c. Run tests to verify fix
```
bun test [relevant-test-file]
# or
npm test -- --testPathPattern=[pattern]
```

Commit and Push Fixes

# Verify git state before operations
git status || {
  echo "❌ Error: git status failed. Repository may be in bad state."
  exit 1
}

# Stage changes
git add [modified-files]

# Verify files were staged
git diff --cached --name-only | grep -q . || {
  echo "❌ Error: No files staged. Check if files were modified."
  exit 1
}

# Commit with descriptive message
git commit -m "fix(review): address PR feedback

- [Summary of fix 1]
- [Summary of fix 2]

Addresses review comments:
- [Reviewer]: [Brief quote of feedback addressed]

Co-Authored-By: Gemini CLI <noreply@anthropic.com>" || {
  echo "❌ Error: git commit failed. Check for pre-commit hooks or conflicts."
  git status
  exit 1
}

# Verify commit succeeded
git log -1 --oneline || {
  echo "❌ Error: Could not verify last commit."
  exit 1
}

# Push to PR branch
git push origin [branch-name] || {
  echo "❌ Error: git push failed. Check network connection and permissions."
  echo "Branch may need rebasing if remote has new commits."
  git status
  exit 1
}

# Verify push succeeded
git fetch origin
LOCAL=$(git rev-parse HEAD)
REMOTE=$(git rev-parse origin/[branch-name])
if [[ "$LOCAL" != "$REMOTE" ]]; then
  echo "❌ Warning: Local and remote commits don't match. Push may have failed."
else
  echo "✅ Successfully pushed fixes to PR branch"
fi

Add Detailed PR Comment

gh pr comment [PR-number] --body "$(cat <<'EOF'
## Review Feedback Addressed

I've pushed changes to address the review feedback:

### Changes Made
| File | Change | Addresses |
|------|--------|-----------|
| `[file1]` | [Description] | @[reviewer]'s comment about [topic] |
| `[file2]` | [Description] | @[reviewer]'s suggestion to [topic] |

### Fixes Summary
- **Blocking issues resolved:** N/N
- **Important issues resolved:** N/N
- **Nits addressed:** N/N

### Questions Answered
> [Original question]

[Response with explanation]

### CI Status
- Tests: [passing/failing]
- Lint: [passing/failing]

**Ready for re-review.** Please take another look when you have a chance.
EOF
)"

Loop Back to Step 3
- Wait for re-review
- Re-analyze any new comments
- Repeat until no blocking issues

Phase 5: CI Verification

Wait for CI to Complete

# Poll CI status
while true; do
  STATUS=$(gh pr checks [PR-number] --json state --jq '.[].state' | sort -u)

  if [[ "$STATUS" == "SUCCESS" ]]; then
    echo "All CI checks passed"
    break
  elif [[ "$STATUS" == *"FAILURE"* ]]; then
    echo "CI failed - analyzing..."
    # Fetch failure details and fix
    break
  fi

  sleep 30
done

If CI Fails → Fix and Push

# Get failed check details
gh pr checks [PR-number] --json name,conclusion,detailsUrl \
  --jq '.[] | select(.conclusion == "FAILURE")'

Analyze failure logs
Implement fix
Commit with fix(ci): [description]
Push and wait for CI to re-run

Phase 6: Merge and Cleanup

Final Readiness Check

All conditions must be true:
- Review state is APPROVED (or no blocking issues remain)
- All CI checks are green
- No unresolved conversations
- Branch is not behind base (no merge conflicts)

Merge PR

# Squash merge with detailed message
gh pr merge [PR-number] --squash --delete-branch \
  --subject "[PR title]" \
  --body "$(cat <<'EOF'
[Detailed description of changes]

Reviewed-by: [reviewer(s)]

    EOF
)"

Update CHANGELOG.md

After successful merge, update the changelog with the new entry:

# Get merge commit details
MERGE_SHA=$(git rev-parse HEAD)
MERGE_DATE=$(date +%Y-%m-%d)
PR_TITLE="[PR title from PR metadata]"
PR_NUMBER="[PR-number]"

# Detect change type from PR title or labels
# feat: → Added
# fix: → Fixed
# docs: → Documentation
# refactor: → Changed
# test: → Testing
# chore: → Infrastructure

# Update CHANGELOG.md
# Insert new entry under [Unreleased] or create new version section

Changelog format (Keep a Changelog):

# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).

## [Unreleased]

### Added
- Feature description from PR #123 (@username, YYYY-MM-DD)

### Fixed
- Bug fix description from PR #124 (@username, YYYY-MM-DD)

### Changed
- Refactor description from PR #125 (@username, YYYY-MM-DD)

## [1.0.0] - YYYY-MM-DD
...

Update logic:

Check if CHANGELOG.md exists, create if not
Parse PR title for conventional commit type (feat/fix/docs/etc.)
Map to changelog category (Added/Fixed/Changed/etc.)
Insert entry under [Unreleased] section
Include: description, PR number, author, date
Commit: docs(changelog): update for PR #[number]
Push to main (post-merge)

Update Task List (if context provided)
- Mark parent task as [x] completed
- Add merge commit SHA as reference
- Trigger next dependent task if applicable

Final Summary Comment

# Comment is auto-added by GitHub on merge, but we can add context
gh pr comment [PR-number] --body "$(cat <<'EOF'
## Merged Successfully

- **Merge commit:** [SHA]
- **Review iterations:** N
- **Total fixes:** N blocking, N important, N nits
- **Time to merge:** [duration]

Task list updated. Moving to next phase.
EOF
)"

Error Handling

Merge Conflicts

# Detect conflicts
gh pr view [PR-number] --json mergeable --jq '.mergeable'

# If "CONFLICTING":
# 1. Fetch latest base branch
git fetch origin main
# 2. Rebase PR branch
git checkout [branch-name]
git rebase origin/main
# 3. Resolve conflicts (may need human help for complex conflicts)
# 4. Force push
git push --force-with-lease origin [branch-name]

Review Stuck / No Response

After 2 hours with no review: Add polite reminder comment
After 24 hours: Escalate to user with summary of PR status
Log: "PR #[number] awaiting review for [duration]. Consider reaching out to reviewers."

CI Flaky Tests

If same test fails intermittently:
1. Re-run CI: gh pr checks [PR-number] --rerun
2. If fails again, investigate test stability
3. Add [flaky] label and document in PR comment

Protected Branch Rules

If merge blocked by branch protection:
```
gh pr view [PR-number] --json mergeStateStatus --jq '.mergeStateStatus'
```
- BLOCKED: Missing required reviews or checks
- BEHIND: Branch needs to be updated
- Log specific blocker and wait or escalate

Interaction Model

Autonomous by Default - Runs without user intervention
Status Updates - Logs progress every 5 minutes during polling
Escalation Points:
- Complex merge conflicts → ask user
- Review timeout (24h) → notify user
- Repeated CI failures → ask user
Completion Notification - Final summary when merged

Integration Points

This skill can be invoked by:

task-processor-auto after creating a PR
task-processor-parallel for each phase PR
dev-workflow-orchestrator as part of full pipeline
Standalone via /pr-review-loop [PR-number] command

References

See reference.md for gh CLI patterns
See .gemini/agents/tdd-developer.md for fix implementation
See .gemini/agents/reliability-engineer.md for security fixes

pr-review-loop

SKILL.md