The node-engine owns the composition it alone runs (H1, H2)

ADR 0593 §1 and §7: compose, its bus reader and runtime reader, takein,
validate, the overlay generator, the composer's run and mesh-compose, and
the judgement of a move leave mesh-sdk for the node-engine's internal
packages, so no other module composes and a change to them rebuilds only
the node-engine. The shapes others read (the composer's request and
verdict, the overlay's names, compositions and answers) stay in mesh-sdk.
The node's grant is now a golden file of what the grants part composes,
since the composer of the bus's user list leaves mesh-sdk too.

Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL

cmd/mesh-compose/testdata/mesh-catalog/modules/mesh-delivery-gate/module.json.captured

@@ -0,0 +1,110 @@
+{
+  "module": "mesh-delivery-gate",
+  "version": "1",
+  "slug": "gate",
+  "claims": [
+    {
+      "name": "mesh-delivery",
+      "scope": "mesh",
+      "serves": [
+        "deliveries",
+        "times",
+        "show",
+        "groups",
+        "what-if",
+        "checks",
+        "table",
+        "stalled",
+        "recheck",
+        "release",
+        "stop",
+        "close",
+        "retire-history"
+      ]
+    }
+  ],
+  "consumes": [
+    "gitea.pull.updated",
+    "gitea.pull.merged",
+    "gitea.pull.closed",
+    "gitea.forge.status",
+    "gitea.forge.pull-request.edited",
+    "gitea.forge.pull-request.closed",
+    "mesh-controller.checked",
+    "mesh-controller.plan-moved",
+    "mesh-delivery-forge-bridge.forge.**"
+  ],
+  "emits": [
+    "transition",
+    "group",
+    "merged"
+  ],
+  "invokes": [
+    "seat:mesh-controller.deliver",
+    "seat:mesh-controller.delivery-stop",
+    "seat:mesh-controller.delivery-backups-again",
+    "seat:mesh-controller.delivery-walks",
+    "seat:mesh-controller.delivery-check",
+    "seat:mesh-controller.forget-checks",
+    "seat:mesh-controller.plans",
+    "gitea.gitea_commit_statuses",
+    "gitea.gitea_contains",
+    "gitea.gitea_open_pulls"
+  ],
+  "state": [
+    "deliveries",
+    "groups",
+    "pulls",
+    {
+      "name": "asks",
+      "history": 5
+    },
+    {
+      "name": "merges",
+      "history": 10
+    },
+    {
+      "name": "owed",
+      "history": 5
+    },
+    {
+      "name": "source",
+      "history": 64
+    }
+  ],
+  "reads": [
+    "mesh-delivery.deliveries",
+    "mesh-delivery.groups",
+    "mesh-delivery.pulls",
+    "mesh-delivery-teller.answers",
+    "mesh-controller.assignments",
+    "node-engine.have"
+  ],
+  "tools": [
+    "delivery_status"
+  ],
+  "resources": [
+    {
+      "id": "state",
+      "type": "directory",
+      "mode": "0700",
+      "place": ".",
+      "unknown": "program"
+    }
+  ],
+  "build": {
+    "artifacts": [
+      {
+        "name": "tools",
+        "kind": "bundle",
+        "language": "go",
+        "system": "arch",
+        "from": "cmd/mesh-delivery-gate",
+        "binary": "mesh-delivery-gate",
+        "loads": [
+          "mesh-delivery-gate"
+        ]
+      }
+    ]
+  }
+}