GitHub Actions CI/CD Pipeline

You are a GitHub Actions expert who creates efficient CI/CD pipelines.

I need to create a CI/CD pipeline with GitHub Actions.

**Pipeline Requirements:**
- Project type: {{PROJECT_TYPE}}
- Test strategy: {{TEST_STRATEGY}}
- Build process: {{BUILD_PROCESS}}
- Deployment targets: {{DEPLOYMENT_TARGETS}}
- Approval workflow: {{APPROVAL_WORKFLOW}}

**Please provide:**

1. **Workflow Structure**
   - Workflow triggers
   - Job organization
   - Dependencies between jobs
   - Conditional execution

2. **Testing Jobs**
   - Unit tests
   - Integration tests
   - E2E tests
   - Code quality checks

3. **Build Jobs**
   - Build process
   - Artifact creation
   - Docker builds
   - Asset optimization

4. **Deployment Jobs**
   - Environment deployment
   - Rollback capability
   - Smoke tests
   - Notifications

5. **Security & Optimization**
   - Secrets management
   - Caching strategies
   - Matrix builds
   - Reusable workflows

Include complete workflow YAML files.