diff --git a/docs/adr/ADR-0225-contract-residual-read-model.md b/docs/adr/ADR-0225-contract-residual-read-model.md
index 4f623abb..3c908e05 100644
--- a/docs/adr/ADR-0225-contract-residual-read-model.md
+++ b/docs/adr/ADR-0225-contract-residual-read-model.md
@@ -1,9 +1,17 @@
 # ADR-0225: ContractResidual Read-Model
 
-**Status:** Proposed
+**Status:** Accepted
 **Author:** Antigravity
 **Date:** 2026-06-22
 
+## Ratification note
+
+Accepted for implementation after #860 review.
+
+This ADR authorizes exactly one diagnostic-only implementation PR for the `ContractResidual` projection over existing `ContractAssessment` outputs.
+
+The authorization does not include SearchGate, ComputeBudgetPolicy, GeometricSearchRun, Workbench implementation, serving behavior, teaching/proposal/report/eval mutation, or runtime repair. Those remain separately gated by future ADRs/PRs.
+
 ## Context
 
 CORE has introduced a proposal-first diagnostic construction pipeline for representing mathematical word problems and relations within the semantic substrate. In this architecture: