feat(guide): add thinking keywords, GitHub Actions examples, and improvement recommendations

Documentation enhancements:
- Add inline thinking keywords section (think, think hard, ultrathink) with usage examples
- Create examples/github-actions/ directory with 3 ready-to-use workflows:
  * Auto PR review with inline comments
  * Security review on every PR
  * Issue triage with label suggestions
- Add comprehensive IMPROVEMENT_RECOMMENDATIONS.md with prioritized action items

Improvements based on zebbern/claude-code-guide analysis:
- Enhanced troubleshooting guidance
- Format enhancements (badges, collapsible tables, C-style comments)
- Security/performance/workflow pitfalls sections
- DeepSeek integration documentation
- One-shot health check scripts

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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# GitHub Actions Workflows for Claude Code
Ready-to-use GitHub Actions workflows that integrate Claude Code into your CI/CD pipeline.
## Prerequisites
1. **Install the Claude GitHub App** on your org/repo (required for Actions to comment on PRs/issues)
2. **Add API Key Secret**: In your repo, go to Settings → Secrets and variables → Actions → New repository secret
- Name: `ANTHROPIC_API_KEY`
- Value: Your Anthropic API key from [console.anthropic.com](https://console.anthropic.com)
3. **Copy Workflows**: Place these `.yml` files in `.github/workflows/` directory
4. **Test**: Open a test PR or issue to see them run
## Available Workflows
### 1. Auto PR Review (`claude-pr-auto-review.yml`)
Creates a structured review with inline comments as soon as a PR opens or updates.
**Features:**
- Automatic code review on PR open/update
- Inline comments on specific lines
- Reviews for correctness, readability, testing, performance, DX
**Usage:**
```bash
# Copy the workflow file
cp examples/github-actions/claude-pr-auto-review.yml .github/workflows/
# Open a PR - Claude will automatically review it
```
---
### 2. Security Review (`claude-security-review.yml`)
Runs a focused security scan and comments findings directly on the PR.
**Features:**
- Security-focused analysis on every PR
- Identifies potential vulnerabilities
- OWASP Top 10 considerations
- Posts findings as PR comments
**Configuration:**
```yaml
# Optional parameters in the workflow file:
exclude-directories: "docs,examples" # Skip certain directories
claudecode-timeout: "20" # Timeout in minutes
claude-model: "claude-3-5-sonnet-20240620" # Model to use
```
**Usage:**
```bash
# Copy the workflow file
cp examples/github-actions/claude-security-review.yml .github/workflows/
# Every PR will be automatically scanned for security issues
```
---
### 3. Issue Triage (`claude-issue-triage.yml`)
When a new issue opens, Claude proposes labels/severity and posts a tidy triage comment.
**Features:**
- Automatic issue classification
- Label suggestions
- Severity assessment (low, medium, high, critical)
- Duplicate detection
- Markdown triage comment
**Auto-apply Labels (Optional):**
To automatically apply suggested labels, edit the workflow file and change:
```yaml
- name: Apply labels (optional)
if: ${{ false }} # Change to true to auto-apply labels
```
**Usage:**
```bash
# Copy the workflow file
cp examples/github-actions/claude-issue-triage.yml .github/workflows/
# Open a new issue - Claude will automatically triage it
```
---
## Customization
### Model Selection
Set `CLAUDE_MODEL` or `claude-model` parameter in workflows:
```yaml
env:
CLAUDE_MODEL: claude-3-5-sonnet-20240620
```
### Permissions
Each workflow declares minimal required permissions:
- `pull-requests: write` for PR reviews
- `issues: write` for issue triage
- `contents: read` for reading repository content
Adjust only if your organization requires stricter policies.
### Scope Filtering
Use `paths:` filters to limit when workflows run:
```yaml
on:
pull_request:
paths:
- 'src/**'
- '!docs/**'
```
## Troubleshooting
**No comments appear on PRs:**
- Verify the Claude GitHub App is installed
- Check workflow has `pull-requests: write` permission
**403 when applying labels:**
- Ensure the job has `issues: write` permission
- Verify `GITHUB_TOKEN` has access to this repo
**Anthropic API errors:**
- Confirm `ANTHROPIC_API_KEY` is set at repository level
- Check the key is not expired
**YAML syntax errors:**
- Validate spacing: two spaces per nesting level, no tabs
- Use a YAML validator: [yamllint.com](https://www.yamllint.com/)
## Advanced Usage
### Combining Workflows
Run multiple workflows together for comprehensive automation:
- PR Review + Security Review on every PR
- Issue Triage + Auto-labeling for new issues
### Custom Prompts
Edit the `direct_prompt` section in workflows to customize Claude's focus:
```yaml
direct_prompt: |
Review this PR focusing on:
1. TypeScript type safety
2. React performance patterns
3. Accessibility compliance
4. Test coverage
```
### Integration with Other Actions
Combine with existing workflows:
```yaml
jobs:
tests:
runs-on: ubuntu-latest
steps:
- name: Run tests
run: npm test
claude-review:
needs: tests # Run after tests pass
runs-on: ubuntu-latest
steps:
- uses: anthropics/claude-code-action@main
# ...
```
## Cost Considerations
These workflows consume Anthropic API credits:
- **PR Review**: ~$0.10-$0.50 per review (depending on diff size)
- **Security Review**: ~$0.20-$0.80 per scan
- **Issue Triage**: ~$0.05-$0.20 per issue
**Tips to reduce costs:**
- Use `paths:` filters to skip docs/config changes
- Set conditions: `if: github.event.pull_request.draft == false`
- Review logs and adjust model selection
## Examples in This Directory
```
examples/github-actions/
├── README.md # This file
├── claude-pr-auto-review.yml # Auto PR review workflow
├── claude-security-review.yml # Security scanning workflow
└── claude-issue-triage.yml # Issue triage workflow
```
## Resources
- [Claude Code Documentation](https://claude.ai/code)
- [GitHub Actions Documentation](https://docs.github.com/en/actions)
- [Anthropic API Documentation](https://docs.anthropic.com/)
- [Claude GitHub App](https://github.com/apps/claude)
## License
These workflows are provided as examples. Adapt them to your needs.