# Sprint 218 Plan: Full-stack Contract Propagation Gate

## Goal
Enforce full-stack category constraints (compatibility/security/migration/SLO) at orchestration gate level.

## Steps
- Step 2129: Category-specific full-stack contract validation rules.
- Step 2130: Strict hard-fail behavior for invalid full-stack contracts.
- Step 2131: Persist full-stack contract packet in results JSONL.
- Step 2132: Aggregate invalid full-stack contract rates in summary.
- Step 2133: Add `Sprint218IntegrationSummary.h`.