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

internal/compose/resolution/process_bus.go

@@ -0,0 +1,16 @@
+package resolution
+
+import (
+	mcat "git.novox.be/novox/mesh-sdk/go/catalogue"
+)
+
+// ToolsBusSecret says name is the own secret a tools bundle's bus account is held in: `broker-<binary>` for a bundle
+// whose bus the manifest declares (ADR 0564 Limits 4). Its file belongs to the runtime's account, which runs the bundle.
+func ToolsBusSecret(m mcat.Manifest, name string) bool {
+	for _, a := range m.BusAccounts() {
+		if a.Tools && name == "broker-"+a.ID {
+			return true
+		}
+	}
+	return false
+}