Split compositions from the inline body so their large files' objects are put, and refuse a composition naming an object the bucket lacks (issue 1945)

cmd/mesh-controller/composed_live.go

@@ -83,7 +83,7 @@ func composeModules(ctx context.Context, open *stores, nodes []string) (map[stri
 			errs = append(errs, fmt.Errorf("%s: %w", node, err))
 			continue
 		}
-		body, err := declared.Body()
+		body, err := compositionBody(declared)
 		if err != nil {
 			errs = append(errs, fmt.Errorf("%s: %w", node, err))
 			continue
@@ -360,3 +360,13 @@ func sliceOfModule(resources []json.RawMessage, module string) []json.RawMessage
 	}
 	return out
 }
+
+// compositionBody is the body a node's compositions are split from: every file's content inline, never by digest, so
+// writeComposed puts each object of a file over 64 KiB in the node's bucket before it writes the composition that names
+// it (ADR 0539 §4). A send's body names those files by digest for a node that reads references, and a send put their
+// objects itself; with sends gone, a composition split from that body named objects nothing put (issue 1945, live on
+// 2026-10-25: novox's nats.bus-users).
+func compositionBody(declared sendable) ([]byte, error) {
+	declared.fileReferences = false
+	return declared.Body()
+}