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(

test/fixtures/local-first-composite/DocumentLabel.qx

@@ -0,0 +1,6 @@
+interface DocumentLabel id "interface:reader:document-label"
+revision "interface:reader:document-label@1" {
+  queryable value title id "document:view-title" : string {
+    get id "document:view-title:get" execution snapshot targets [browser, server];
+  }
+}

test/fixtures/local-first-composite/workspace.qx

@@ -7,6 +7,7 @@ workspace Reader id "workspace:reader" revision "workspace:reader@1" commit "aaa
   import package ReaderRuntime;
   import package CommentRuntime;
   import interface DocumentMetadata;
+  import interface DocumentLabel;
   import interface CommentFactory;
   // Shared record definitions, repeated explicitly in independently locked resources.
 
@@ -62,6 +63,10 @@ workspace Reader id "workspace:reader" revision "workspace:reader@1" commit "aaa
     };
   }
 
+  conform Document as DocumentLabel id "conformance:reader:document-label" {
+    bind title.get to interface DocumentMetadata.label.get;
+  }
+
   conform Document as DocumentMetadata id "conformance:reader:document-metadata" {
     private state Label id "slot:document:label" on Document : string policy register;
     initialize { label to state Label; };