RETIRED — Immutable Deployment Contract

This document is retired. Its content has been absorbed into rules/deployment-rule.md.

Why retired: 2026-09-15 audit found ~80% content overlap with deployment-rule.md. Both carried the same Standard ID (ES-DEPLOY) — a naming collision. The unique content (Failure Contract section) has been moved to deployment-rule.md §Failure Contract.

Do not cite this file. Use deployment-rule.md instead.