Add code-reviewer agent and code-review skill
Create specialized agent for automated PR code review that: - Fetches PR diffs via fj CLI - Analyzes code for quality, bugs, security, style, and test coverage - Posts structured review comments to PRs Includes code-review skill with guidelines for reviewing code changes. Closes #9 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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agents/code-reviewer/AGENT.md
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agents/code-reviewer/AGENT.md
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# Code Reviewer Agent
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Specialized agent for automated code review of pull requests. Provides immediate, structured feedback on code changes.
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## Skills
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- forgejo
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- code-review
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## Capabilities
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This agent can:
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- Fetch PR diffs via `fj pr view <number> diff`
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- Analyze code for quality issues
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- Identify potential bugs and logic errors
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- Check for security vulnerabilities
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- Evaluate code style and consistency
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- Assess test coverage gaps
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- Post structured review comments via `fj pr comment`
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## When to Use
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Spawn this agent for:
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- Automated review after PR creation (e.g., from `/work-issue`)
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- On-demand code review of any PR
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- Pre-merge quality checks
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This agent should be spawned asynchronously so it doesn't block the main workflow.
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## Behavior
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### Input
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The agent expects a PR number as input:
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```
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Review PR #<number>
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```
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### Review Process
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1. Fetch PR details and diff using `fj pr view <number> diff`
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2. Analyze the diff for:
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- **Code Quality**: Readability, maintainability, complexity
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- **Bugs**: Logic errors, edge cases, null checks
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- **Security**: Injection vulnerabilities, auth issues, data exposure
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- **Style**: Naming conventions, formatting, consistency
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- **Test Coverage**: Missing tests, untested edge cases
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3. Generate a structured review comment
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4. Post the review via `fj pr comment <number> "<review>"`
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### Review Comment Format
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The agent posts reviews in this structured format:
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```markdown
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## AI Code Review
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> This is an automated review generated by the code-reviewer agent.
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### Summary
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[Brief overall assessment]
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### Findings
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#### Code Quality
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- [Finding 1]
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- [Finding 2]
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#### Potential Bugs
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- [Finding or "No issues found"]
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#### Security Concerns
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- [Finding or "No issues found"]
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#### Style Notes
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- [Finding or "Consistent with codebase"]
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#### Test Coverage
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- [Finding or "Adequate coverage"]
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### Verdict
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[LGTM / Needs Changes / Blocking Issues]
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```
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## Example Usage
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From the main conversation, spawn this agent asynchronously:
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```
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Task: Review PR #42
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Agent: code-reviewer
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Background: true
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```
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## Dependencies
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- Requires `fj` CLI to be configured and authenticated
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- Uses `code-review` skill for analysis guidelines
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skills/code-review/SKILL.md
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skills/code-review/SKILL.md
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# Code Review
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Guidelines for reviewing code changes in pull requests.
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## Review Categories
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### Code Quality
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Look for:
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- **Readability**: Clear naming, logical structure, appropriate comments
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- **Maintainability**: Easy to modify, follows DRY, single responsibility
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- **Complexity**: Avoid deep nesting, overly long functions, complex conditionals
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- **Dead code**: Unused variables, unreachable code, commented-out blocks
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Questions to ask:
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- Can someone unfamiliar with this code understand it quickly?
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- Would I be comfortable maintaining this code?
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- Does this follow existing patterns in the codebase?
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### Potential Bugs
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Look for:
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- **Edge cases**: Empty arrays, null values, boundary conditions
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- **Logic errors**: Off-by-one, incorrect operators, inverted conditions
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- **Race conditions**: Async operations, shared state
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- **Resource leaks**: Unclosed connections, missing cleanup
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- **Error handling**: Unhandled exceptions, silent failures
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Questions to ask:
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- What happens with unexpected input?
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- Are all error paths handled appropriately?
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- Could concurrent execution cause issues?
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### Security Concerns
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Look for:
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- **Injection**: SQL, command, XSS vulnerabilities
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- **Authentication**: Bypasses, weak validation
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- **Authorization**: Missing permission checks
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- **Data exposure**: Logging secrets, exposing internals
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- **Dependencies**: Known vulnerabilities in imports
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Questions to ask:
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- Could an attacker exploit this?
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- Is user input properly validated and sanitized?
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- Are secrets properly protected?
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### Style & Consistency
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Look for:
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- **Naming conventions**: Match existing codebase style
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- **Formatting**: Consistent indentation, spacing
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- **File organization**: Logical grouping, appropriate location
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- **Import order**: Following project conventions
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Note: Style issues are lower priority than functional concerns.
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### Test Coverage
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Look for:
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- **Missing tests**: New functionality without tests
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- **Edge cases**: Boundary conditions not tested
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- **Error paths**: Exception handling not verified
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- **Integration**: Component interactions not covered
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Questions to ask:
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- Would these tests catch a regression?
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- Are the assertions meaningful?
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- Do tests cover the acceptance criteria?
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## Review Process
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1. **Understand context**: Read PR description and linked issues
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2. **High-level scan**: Understand overall structure and approach
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3. **Detailed review**: Go through changes file by file
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4. **Consider impact**: Think about side effects and dependencies
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5. **Provide feedback**: Be constructive and specific
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## Writing Review Comments
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### Be Constructive
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- Explain *why* something is an issue
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- Suggest alternatives when possible
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- Distinguish between blocking issues and suggestions
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### Be Specific
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- Reference exact lines or code blocks
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- Provide concrete examples
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- Link to relevant documentation or patterns
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### Be Kind
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- Phrase feedback as questions when appropriate
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- Acknowledge good solutions
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- Remember there's a person receiving this feedback
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## Verdict Criteria
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### LGTM (Looks Good To Me)
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- No blocking issues
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- Code meets quality standards
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- Tests are adequate
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- Ready to merge
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### Needs Changes
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- Minor issues that should be addressed
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- Style improvements
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- Missing tests for edge cases
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- Not blocking, but worth fixing
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### Blocking Issues
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- Security vulnerabilities
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- Logic errors that would cause bugs
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- Missing critical functionality
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- Breaking changes without migration
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## Review Comment Template
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```markdown
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## AI Code Review
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> This is an automated review generated by the code-reviewer agent.
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### Summary
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[1-2 sentence overall assessment of the changes]
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### Findings
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#### Code Quality
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- [Issue with specific file:line reference and explanation]
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- [Or "Code is well-structured and readable"]
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#### Potential Bugs
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- [Bug risk with explanation]
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- [Or "No obvious issues found"]
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#### Security Concerns
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- [Security issue with severity]
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- [Or "No security concerns identified"]
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#### Style Notes
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- [Style improvement suggestion]
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- [Or "Consistent with codebase conventions"]
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#### Test Coverage
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- [Missing test scenario]
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- [Or "Tests adequately cover changes"]
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### Verdict
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**[LGTM / Needs Changes / Blocking Issues]**
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[Brief explanation of verdict]
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```
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