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/mssql/files/backup.sql

@@ -0,0 +1,14 @@
+SET NOCOUNT ON;
+DECLARE @n sysname, @s nvarchar(max);
+DECLARE c CURSOR LOCAL FAST_FORWARD FOR
+  SELECT name FROM sys.databases WHERE database_id > 4 AND state = 0 AND source_database_id IS NULL;
+OPEN c;
+FETCH NEXT FROM c INTO @n;
+WHILE @@FETCH_STATUS = 0
+BEGIN
+  SET @s = N'BACKUP DATABASE ' + QUOTENAME(@n) + N' TO DISK = N''/var/opt/mssql/backup/' + REPLACE(@n, N'''', N'''''') + N'.bak'' WITH INIT, COPY_ONLY, CHECKSUM';
+  EXEC (@s);
+  FETCH NEXT FROM c INTO @n;
+END
+CLOSE c;
+DEALLOCATE c;