Point three design documents at the code that exists for them

Their subject matter has been built and proven for days and their frontmatter
still said code: [] — which is what the cross-cutting view is generated from,
so it was claiming nothing existed for the substrate, the node lifecycle and
delivery.

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

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

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