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/testdata/l2-moved/items/claude-code.shell-zsh-normal

@@ -0,0 +1,12 @@
+# The agent's session (module claude-code, novox/hq ADR 0266): where this machine names an account of the
+# agents' own, claude in an interactive zsh is claude-agent, which starts the session as that account. Where
+# agents run as the operator's account the file names that account, and nothing is added. claude-agent runs
+# the real claude: exec, sudo and its sh see no alias.
+if [[ -r /etc/claude-code/agent-account ]]; then
+	() {
+		local agent=$(</etc/claude-code/agent-account)
+		if [[ -n $agent && $agent != $USERNAME ]]; then
+			alias claude=claude-agent
+		fi
+	}
+fi