ARCH: сделать catalog drilldown отдельным user-facing metadata шагом

llm_normalizer/backend/tests/assistantMcpDiscoveryAnswerAdapter.test.ts

@@ -486,6 +486,42 @@ describe("assistant MCP discovery answer adapter", () => {
     expect(draft.must_not_claim).toContain("Do not present the inferred next checked lane as already executed data retrieval.");
   });
 
+  it("uses a distinct human headline for catalog drilldown instead of repeating a generic metadata overview", async () => {
+    const planner = planAssistantMcpDiscovery({
+      metadataSurface: {
+        selected_entity_set: "Catalog",
+        selected_surface_objects: ["Catalog.Counterparties"],
+        downstream_route_family: "catalog_drilldown",
+        route_family_selection_basis: "selected_entity_set",
+        recommended_next_primitive: "drilldown_related_objects",
+        ambiguity_detected: false,
+        ambiguity_entity_sets: []
+      },
+      turnMeaning: {
+        asked_domain_family: "metadata",
+        asked_action_family: "inspect_catalog",
+        unsupported_but_understood_family: "schema_surface"
+      }
+    });
+    const pilot = await executeAssistantMcpDiscoveryPilot(
+      planner,
+      buildMetadataDeps([
+        {
+          FullName: "Catalog.Counterparties",
+          MetaType: "Catalog",
+          attributes: [{ Name: "Description" }]
+        }
+      ])
+    );
+
+    const draft = buildAssistantMcpDiscoveryAnswerDraft(pilot);
+
+    expect(draft.answer_mode).toBe("confirmed_with_bounded_inference");
+    expect(draft.headline).toContain("углубиться");
+    expect(draft.headline).toContain("справочников");
+    expect(draft.headline).toContain("catalog drilldown");
+  });
+
   it("keeps metadata answer honest when schema surface stays ambiguous", async () => {
     const planner = planAssistantMcpDiscovery({
       turnMeaning: {