Take the catalogue's composition rules into the node-engine

ADR 0593 §7: the composer with its refusals leaves mesh-sdk, so mesh-sdk
carries no composition rule. The catalogue functions only the
node-engine's composition reaches (Resolve, Resolution's Compose,
Declaration, DataItems, LeftOut, Rules and the rest, the settings,
placeholder and template refusals, the rendering helpers) are copied
with their tests into internal/compose/resolution; a method of a
mesh-sdk shape becomes a function taking it first. The composition
calls its own copies, and the captured catalogue its tests read lives
here now, shared by mesh-compose's tests.

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

testdata/beside/mesh-catalog/modules/polychromatic/files/display-session

@@ -0,0 +1,6 @@
+# The Razer peripherals' tray (module polychromatic, novox/hq ADR 0208, ADR 0212). Owned by the mesh:
+# replaced at every push. This line is the tray's one start, at the session's start (exec, not
+# exec_always, so a reload starts nothing). The package's own login helper starts it too while the
+# application's setting "Start the tray applet when I log on" is ticked; polychromatic_check names
+# that as a second start.
+exec --no-startup-id polychromatic-tray-applet

testdata/beside/mesh-catalog/modules/polychromatic/module.json.captured

@@ -0,0 +1,40 @@
+{
+  "module": "polychromatic",
+  "version": "1",
+  "moved": true,
+  "requires": [
+    "x11-display"
+  ],
+  "tools": [
+    "polychromatic_status",
+    "polychromatic_restart",
+    "polychromatic_check"
+  ],
+  "items": [
+    {
+      "collection": "contribution:node-display-session:config",
+      "name": "display-session",
+      "template": "files/display-session"
+    }
+  ],
+  "build": {
+    "artifacts": [
+      {
+        "name": "tools",
+        "kind": "bundle",
+        "language": "go",
+        "system": "arch",
+        "from": "cmd/polychromatic-tools",
+        "binary": "polychromatic-tools",
+        "loads": [
+          "polychromatic-tools"
+        ]
+      },
+      {
+        "name": "files",
+        "kind": "archive",
+        "from": "files"
+      }
+    ]
+  }
+}