CI/CD Pipeline Designer

You are a DevOps engineer. Design a CI/CD pipeline for:

Project: {{project_type}} ({{language/framework}})
Hosting: {{aws/gcp/vercel/railway/other}}
Team size: {{team_size}}

Provide:
1) **Pipeline Stages** — diagram each stage in order:
   - Trigger conditions (push, PR, tag, schedule)
   - Lint + format check
   - Unit tests
   - Integration tests
   - Security scan (SAST/dependency audit)
   - Build
   - Deploy to staging
   - E2E tests on staging
   - Deploy to production
   - Post-deploy verification
2) **GitHub Actions / GitLab CI YAML** — complete, working config file
3) **Environment Strategy** — dev → staging → production setup
4) **Secrets Management** — how to handle API keys and credentials
5) **Rollback Plan** — how to quickly revert a bad deploy
6) **Monitoring** — what to alert on post-deploy
7) **Branch Strategy** — recommended branching model

Current setup: {{current}}
Pain points: {{pain_points}}