# Phase 4: Polish & Deployment

**Objective:** Infrastructure optimization, CI/CD integration, and production launch readiness.

## Steps

- **4A: Infrastructure as Code** — Docker/k8s/serverless configs, .env, health checks
- **4B: CI/CD Pipeline** — GitHub Actions with per-stage gates
- **4C: Production Readiness** — 18-item checklist, rollback plan, monitoring config

## Finality Gate

Before production deployment, the Finality Gate requires:
1. All CI checks passing
2. Docker build succeeds
3. Health endpoint returns 200
4. Smoke tests pass
5. Merge-Readiness Pack (MRP) generated
6. Human cryptographic sign-off

## Gate Check (G4)

- G4.1: CI checks passing on main
- G4.2: Docker build succeeds (image <500MB)
- G4.3: Health endpoint returns 200
- G4.4: Smoke tests pass
- G4.5: Rollback plan exists
- G4.6: Monitoring endpoints exposed
