whetstone_DSL/sprint219_plan.md

Sprint 219 Plan: Migration/Rollback Contract Hardening

Goal

Ensure migration category tasks require rollback and data-safety declarations.

Steps

• Step 2134: Enforce migration.rollback_required=true for migration category.
• Step 2135: Validate data-loss prohibition contract for migration tasks.
• Step 2136: Emit migration contract blocker reason classes.
• Step 2137: Add migration contract coverage metrics.
• Step 2138: Add Sprint219IntegrationSummary.h.