feat: expose canonical module display URLs

apps/api/tests/module-ui-host-e2e.test.ts

@@ -439,6 +439,7 @@ describe("end to end: a discovered module's UI mounts in the Ekklesia host", ()
       expect(bootstrap.descriptor).toEqual({
         apiBaseUrl: "/api/v1/modules/example",
         contributions: [],
+        displayPageUrl: "/display/example",
         id: "example",
         permissions: ["example.records.read", "example.display.view"],
         realtimeBaseUrl: "/api/v1/module-realtime/example",
@@ -454,8 +455,8 @@ describe("end to end: a discovered module's UI mounts in the Ekklesia host", ()
       );
       const artifactUrl = await publishedArtifactUrl(harness, sourceUrl);
 
-      // 4. The generic loader receives the unchanged five-member browser context and mounts the
-      // display artifact independently of the Dashboard artifact.
+      // 4. The generic loader receives the host-owned browser context, including the canonical
+      // display page, and mounts the display artifact independently of the Dashboard artifact.
       const context = createModuleUiContext({
         config: harness.config,
         descriptor: bootstrap.descriptor,
@@ -464,6 +465,7 @@ describe("end to end: a discovered module's UI mounts in the Ekklesia host", ()
       expect(Object.keys(context).sort()).toEqual([
         "api",
         "contributions",
+        "display",
         "moduleId",
         "permissions",
         "principal",