diff --git a/03-DESIGN/01-to-be/07-the-substrate.md b/03-DESIGN/01-to-be/07-the-substrate.md
index 03bb12c..70c3660 100644
--- a/03-DESIGN/01-to-be/07-the-substrate.md
+++ b/03-DESIGN/01-to-be/07-the-substrate.md
@@ -1,7 +1,10 @@
 ---
 layer: to-be
 status: designed
-code: []
+code:
+  - mesh-host examples/substrate-first-node.lock
+  - mesh-host internal/apply
+  - mesh-lab test/integration/mesh.test.ts (a bare machine becomes a mesh)
 updated: 2026-08-30
 decisions:
   - 02-DECISIONS/0004-a-node-and-how-it-joins.md
diff --git a/03-DESIGN/01-to-be/09-the-node-lifecycle.md b/03-DESIGN/01-to-be/09-the-node-lifecycle.md
index 3c5a23a..c797723 100644
--- a/03-DESIGN/01-to-be/09-the-node-lifecycle.md
+++ b/03-DESIGN/01-to-be/09-the-node-lifecycle.md
@@ -1,7 +1,10 @@
 ---
 layer: to-be
 status: designed
-code: []
+code:
+  - mesh-host internal/link/enrol.go
+  - mesh-control internal/token
+  - mesh-control internal/inventory/nodes.go
 updated: 2026-08-27
 decisions:
   - 02-DECISIONS/0004-a-node-and-how-it-joins.md
diff --git a/03-DESIGN/01-to-be/10-delivery.md b/03-DESIGN/01-to-be/10-delivery.md
index 4bded52..ee10bc4 100644
--- a/03-DESIGN/01-to-be/10-delivery.md
+++ b/03-DESIGN/01-to-be/10-delivery.md
@@ -1,7 +1,10 @@
 ---
 layer: to-be
 status: designed
-code: []
+code:
+  - mesh-control internal/builder
+  - mesh-control cmd/mesh-control (build, build --behind, push, status)
+  - mesh-control internal/inventory/builds.go
 updated: 2026-08-28
 decisions:
   - 02-DECISIONS/0010-delivery.md