diff --git a/docs/architecture.md b/docs/architecture.md
index c8d9d83..9747e32 100644
--- a/docs/architecture.md
+++ b/docs/architecture.md
@@ -24,4 +24,4 @@ GitHub Actions is orchestration only. Workflows may check out code, provide cred
 
 Machine-readable stage artifacts and consumer configuration are versioned. A mutating stage consumes the artifact from the preceding stage and may revalidate external state, but must not silently recalculate values already finalized upstream.
 
-The public integration boundary is the CLI plus `actions/prepare`, `actions/post-merge`, and `actions/publication`. Organization workflow templates may consume those Actions, but they do not own release policy or release runtime code.
+The primary lifecycle integration boundary is the CLI plus `actions/prepare`, `actions/post-merge`, and `actions/publication`. Purpose-specific public Actions may also expose release operations that have independent consumers outside that lifecycle, currently stable selection, artifact validation, metadata inspection, release-note generation, manual release preflight, and App Store publication waiting. These Actions are thin adapters over the same versioned PHP product; they must not become parallel policy implementations. Organization workflow templates may consume the public Actions, but they do not own release policy or release runtime code.