ARCH: ранжировать metadata surface objects только для честного tie-break

llm_normalizer/backend/tests/assistantMcpDiscoveryPilotExecutor.test.ts

@@ -435,6 +435,50 @@ describe("assistant MCP discovery pilot executor", () => {
     );
   });
 
+  it("can break a weak metadata family tie by ranking surface objects against the requested scope", async () => {
+    const planner = planAssistantMcpDiscovery({
+      turnMeaning: {
+        asked_domain_family: "metadata",
+        asked_action_family: "inspect_surface",
+        explicit_entity_candidates: ["НДС"]
+      }
+    });
+    const deps = buildMetadataDeps([
+      {
+        FullName: "Document.НДССчетФактура",
+        MetaType: "Document",
+        attributes: [{ Name: "Дата" }]
+      },
+      {
+        FullName: "AccumulationRegister.BankOperations",
+        MetaType: "AccumulationRegister",
+        resources: [{ Name: "Amount" }]
+      }
+    ]);
+
+    const result = await executeAssistantMcpDiscoveryPilot(planner, deps);
+
+    expect(result.pilot_status).toBe("executed");
+    expect(result.derived_metadata_surface).toMatchObject({
+      metadata_scope: "НДС",
+      available_entity_sets: ["Document", "AccumulationRegister"],
+      selected_entity_set: null,
+      selected_surface_objects: ["Document.НДССчетФактура"],
+      surface_family_scores: {
+        document_evidence: 1,
+        movement_evidence: 1,
+        catalog_drilldown: 0
+      },
+      downstream_route_family: "document_evidence",
+      route_family_selection_basis: "dominant_surface_objects",
+      recommended_next_primitive: "query_documents",
+      ambiguity_detected: false,
+      ambiguity_entity_sets: [],
+      surface_object_ranking_applied: true
+    });
+    expect(result.reason_codes).toContain("pilot_selected_metadata_route_family_from_surface_object_ranking");
+  });
+
   it("keeps metadata ambiguity unresolved when surface-family scores are nearly tied", async () => {
     const planner = planAssistantMcpDiscovery({
       turnMeaning: {