Qualify read-only forwarding and scoped portable discovery

test/composite-fixture.ts

@@ -11,7 +11,7 @@ import { compileQuery } from "../src/query/compile.js";
 import { readReaderFixture } from "./reader-fixture.js";
 const directory = resolve("test/fixtures/local-first-composite");
 export async function loadCompositeWorkspace() {
-  const changed = new Set(["DocumentFactory", "DocumentMetadata", "CommentFactory"]);
+  const changed = new Set(["DocumentFactory", "DocumentMetadata", "DocumentLabel", "CommentFactory"]);
   const read = (name: string) => readFile(resolve(directory, `${name}.qx`), "utf8");
   const source = { repository: "https://example.test/composite.git", commit: "b".repeat(40) };
   const interfaces = new Map<string, InterfaceRevision>();
@@ -22,6 +22,7 @@ export async function loadCompositeWorkspace() {
     "DocumentActions",
     "DocumentFactory",
     "DocumentMetadata",
+    "DocumentLabel",
     "CommentFactory",
   ]) {
     const result = compileCapabilityResourceSource(