From 2547519be410b4d6134f8dd8ab6308571beb2038 Mon Sep 17 00:00:00 2001
From: Derek Ables <derekables@gmail.com>
Date: Fri, 24 Jul 2026 14:54:01 -0700
Subject: [PATCH 1/2] feat: add policy decision adapter skeleton

---
 packages/decision-pipeline/src/policy-adapter.ts | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 packages/decision-pipeline/src/policy-adapter.ts

diff --git a/packages/decision-pipeline/src/policy-adapter.ts b/packages/decision-pipeline/src/policy-adapter.ts
new file mode 100644
index 0000000..916ca97
--- /dev/null
+++ b/packages/decision-pipeline/src/policy-adapter.ts
@@ -0,0 +1,11 @@
+import type { Decision } from './decision';
+
+/**
+ * Boundary adapter between policy evaluation and decision output.
+ *
+ * This layer translates policy results into pipeline decisions.
+ * It does not own policy rules or execute actions.
+ */
+export interface PolicyDecisionAdapter {
+  adapt(policyResult: unknown): Promise<Decision>;
+}

From 8f84b39b342360c5bc151c7bbd80ff3107599fd6 Mon Sep 17 00:00:00 2001
From: Derek Ables <derekables@gmail.com>
Date: Fri, 24 Jul 2026 14:54:06 -0700
Subject: [PATCH 2/2] docs: document policy decision adapter boundary

---
 .../decision-pipeline/src/policy-adapter.md   | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 packages/decision-pipeline/src/policy-adapter.md

diff --git a/packages/decision-pipeline/src/policy-adapter.md b/packages/decision-pipeline/src/policy-adapter.md
new file mode 100644
index 0000000..d1debca
--- /dev/null
+++ b/packages/decision-pipeline/src/policy-adapter.md
@@ -0,0 +1,32 @@
+# Policy Decision Adapter
+
+## Purpose
+
+The policy decision adapter creates the translation boundary between policy evaluation and the decision pipeline.
+
+## Responsibility
+
+The adapter converts policy output into a standardized Decision contract.
+
+```
+Policy Result
+      |
+      v
+Policy Decision Adapter
+      |
+      v
+Decision
+```
+
+## Non-Responsibilities
+
+The adapter does not:
+
+- Define policy rules
+- Evaluate domain events
+- Execute actions
+- Communicate with external systems
+
+## Design Goal
+
+Policies should remain independent from the pipeline while decisions remain consistent across future implementations.