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/clipmenu/module.json.captured

@@ -0,0 +1,135 @@
+{
+  "module": "clipmenu",
+  "version": "1",
+  "moved": true,
+  "capabilities": [
+    "package-manager"
+  ],
+  "requires": [
+    "x11-display"
+  ],
+  "claims": [
+    {
+      "name": "node-clipboard",
+      "scope": "node",
+      "serves": [
+        "history",
+        "copy"
+      ]
+    }
+  ],
+  "tools": [
+    "clipmenu_paste",
+    "clipmenu_clear",
+    "clipmenu_delete"
+  ],
+  "items": [
+    {
+      "collection": "environment",
+      "name": "cm-selections",
+      "attributes": {
+        "kind": "variable",
+        "name": "CM_SELECTIONS"
+      },
+      "template": "files/env-cm-selections"
+    },
+    {
+      "collection": "environment",
+      "name": "cm-max-clips",
+      "attributes": {
+        "kind": "variable",
+        "name": "CM_MAX_CLIPS"
+      },
+      "template": "files/env-cm-max-clips"
+    },
+    {
+      "collection": "environment",
+      "name": "cm-histlength",
+      "attributes": {
+        "kind": "variable",
+        "name": "CM_HISTLENGTH"
+      },
+      "template": "files/env-cm-histlength"
+    },
+    {
+      "collection": "contribution:node-display-session:config",
+      "name": "display-session",
+      "template": "files/i3/50-clipmenu.conf"
+    }
+  ],
+  "resources": [
+    {
+      "id": "package",
+      "type": "package",
+      "package": "clipmenu"
+    },
+    {
+      "id": "greenclip",
+      "type": "package",
+      "package": "rofi-greenclip",
+      "absent": true
+    },
+    {
+      "id": "text-only",
+      "type": "file",
+      "path": "/usr/local/lib/mesh-clipmenu/xsel",
+      "mode": "0755",
+      "template": "files/bin/xsel"
+    },
+    {
+      "id": "daemon-dropins",
+      "type": "directory",
+      "path": "${machine:account-home}/.config/systemd/user/clipmenud.service.d",
+      "owner": "${machine:account}",
+      "mode": "0755",
+      "unknown": "move-out"
+    },
+    {
+      "id": "daemon-dropin",
+      "type": "file",
+      "path": "${machine:account-home}/.config/systemd/user/clipmenud.service.d/mesh.conf",
+      "owner": "${machine:account}",
+      "mode": "0644",
+      "template": "files/systemd/clipmenud-mesh.conf"
+    },
+    {
+      "id": "launcher",
+      "type": "file",
+      "path": "/usr/local/lib/mesh-clipmenu/clipmenud-session",
+      "mode": "0755",
+      "template": "files/bin/clipmenud-session"
+    },
+    {
+      "id": "daemon",
+      "type": "service",
+      "unit": "clipmenud.service",
+      "scope": "user",
+      "user": "${machine:account}",
+      "state": "running",
+      "boot": "enabled",
+      "health": {
+        "kind": "unit"
+      }
+    }
+  ],
+  "build": {
+    "artifacts": [
+      {
+        "name": "tools",
+        "kind": "bundle",
+        "language": "go",
+        "system": "arch",
+        "from": "cmd/clipmenu-tools",
+        "binary": "clipmenu-tools",
+        "loads": [
+          "clipmenu-tools"
+        ]
+      },
+      {
+        "name": "files",
+        "kind": "archive",
+        "from": "files"
+      }
+    ]
+  }
+}