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/telegram/module.json.captured

@@ -0,0 +1,79 @@
+{
+  "module": "telegram",
+  "version": "1",
+  "slug": "tgrm",
+  "runs-as": "telegram",
+  "claims": [
+    {
+      "name": "channel",
+      "scope": "mesh",
+      "kind": "telegram",
+      "capabilities": [
+        "deliver",
+        "reaches-away",
+        "silent",
+        "edit",
+        "max-length:4096",
+        "choice",
+        "verified-sender",
+        "exact-render",
+        "code-factor"
+      ]
+    },
+    {
+      "name": "intake",
+      "scope": "mesh",
+      "kind": "telegram"
+    }
+  ],
+  "state": [
+    "offset",
+    {
+      "name": "messages",
+      "ttl-seconds": 2592000
+    }
+  ],
+  "own-secrets": {
+    "broker": "${dir:state}/broker",
+    "telegram-token": "${dir:state}/telegram-token"
+  },
+  "secrets-owner": "telegram",
+  "tools": [
+    "telegram_status"
+  ],
+  "resources": [
+    {
+      "id": "account",
+      "type": "user",
+      "name": "telegram",
+      "shell": "/usr/bin/nologin",
+      "home": "/var/lib/telegram"
+    },
+    {
+      "id": "state",
+      "type": "directory",
+      "mode": "0700",
+      "owner": "telegram",
+      "place": ".",
+      "unknown": "program"
+    }
+  ],
+  "build": {
+    "artifacts": [
+      {
+        "name": "tools",
+        "kind": "bundle",
+        "language": "go",
+        "system": "arch",
+        "from": "cmd/telegram",
+        "binary": "telegram",
+        "loads": [
+          "telegram"
+        ],
+        "env": {
+          "MESH_TELEGRAM_TOKEN_FILE": "${dir:state}/telegram-token"
+        }
+      }
+    ]
+  }
+}