ARCH: заземлить metadata surface в следующий MCP lane

llm_normalizer/backend/tests/assistantMcpDiscoveryAnswerAdapter.test.ts

@@ -130,11 +130,49 @@ describe("assistant MCP discovery answer adapter", () => {
     const confirmedText = draft.confirmed_lines.join("\n");
 
     expect(draft.answer_mode).toBe("confirmed_with_bounded_inference");
-    expect(draft.headline).toContain("метаданным 1С");
+    expect(draft.headline).toContain("заземлена вероятная поверхность");
     expect(confirmedText).toContain("Подтвержденная metadata-поверхность 1С");
     expect(confirmedText).toContain("Документ.СчетФактураВыданный");
+    expect(confirmedText).toContain("Выбранное family: Документ");
     expect(confirmedText).toContain("Дата");
+    expect(draft.inference_lines.join("\n")).toContain("контур документов");
+    expect(draft.next_step_line).toContain("surface «Документ»");
     expect(draft.must_not_claim).toContain("Do not present metadata surface as confirmed business data rows.");
+    expect(draft.must_not_claim).toContain("Do not present the inferred next checked lane as already executed data retrieval.");
+  });
+
+  it("keeps metadata answer honest when schema surface stays ambiguous", async () => {
+    const planner = planAssistantMcpDiscovery({
+      turnMeaning: {
+        asked_domain_family: "metadata",
+        asked_action_family: "inspect_fields",
+        explicit_entity_candidates: ["НДС"]
+      }
+    });
+    const pilot = await executeAssistantMcpDiscoveryPilot(
+      planner,
+      buildMetadataDeps([
+        {
+          FullName: "Документ.СчетФактураВыданный",
+          MetaType: "Документ",
+          attributes: [{ Name: "Дата" }]
+        },
+        {
+          FullName: "РегистрНакопления.НДСПокупок",
+          MetaType: "РегистрНакопления",
+          resources: [{ Name: "СуммаНДС" }]
+        }
+      ])
+    );
+
+    const draft = buildAssistantMcpDiscoveryAnswerDraft(pilot);
+
+    expect(draft.headline).toContain("конкурирующие schema-поверхности");
+    expect(draft.inference_lines.join("\n")).toContain("несколько конкурирующих family");
+    expect(draft.unknown_lines).toContain(
+      "Exact downstream metadata surface remains ambiguous across: Документ, РегистрНакопления"
+    );
+    expect(draft.next_step_line).toContain("Документ, РегистрНакопления");
   });
 
   it("turns value-flow evidence into a bounded turnover answer draft", async () => {

llm_normalizer/backend/tests/assistantMcpDiscoveryPilotExecutor.test.ts

@@ -138,6 +138,12 @@ describe("assistant MCP discovery pilot executor", () => {
       matched_rows: 2,
       available_entity_sets: ["Документ"],
       matched_objects: ["Документ.СчетФактураВыданный", "Документ.СчетФактураПолученный"],
+      selected_entity_set: "Документ",
+      selected_surface_objects: ["Документ.СчетФактураВыданный", "Документ.СчетФактураПолученный"],
+      downstream_route_family: "document_evidence",
+      recommended_next_primitive: "query_documents",
+      ambiguity_detected: false,
+      ambiguity_entity_sets: [],
       available_fields: ["Дата", "Организация", "Контрагент"],
       inference_basis: "confirmed_1c_metadata_surface_rows"
     });
@@ -150,6 +156,45 @@ describe("assistant MCP discovery pilot executor", () => {
     });
   });
 
+  it("keeps metadata grounding ambiguous when several surface families compete", async () => {
+    const planner = planAssistantMcpDiscovery({
+      turnMeaning: {
+        asked_domain_family: "metadata",
+        asked_action_family: "inspect_fields",
+        explicit_entity_candidates: ["НДС"]
+      }
+    });
+    const deps = buildMetadataDeps([
+      {
+        FullName: "Документ.СчетФактураВыданный",
+        MetaType: "Документ",
+        attributes: [{ Name: "Дата" }]
+      },
+      {
+        FullName: "РегистрНакопления.НДСПокупок",
+        MetaType: "РегистрНакопления",
+        resources: [{ Name: "СуммаНДС" }]
+      }
+    ]);
+
+    const result = await executeAssistantMcpDiscoveryPilot(planner, deps);
+
+    expect(result.pilot_status).toBe("executed");
+    expect(result.derived_metadata_surface).toMatchObject({
+      metadata_scope: "НДС",
+      available_entity_sets: ["Документ", "РегистрНакопления"],
+      selected_entity_set: null,
+      downstream_route_family: null,
+      recommended_next_primitive: null,
+      ambiguity_detected: true,
+      ambiguity_entity_sets: ["Документ", "РегистрНакопления"]
+    });
+    expect(result.evidence.inferred_facts).toEqual([]);
+    expect(result.evidence.unknown_facts).toContain(
+      "Exact downstream metadata surface remains ambiguous across: Документ, РегистрНакопления"
+    );
+  });
+
   it("executes value-flow query_movements and derives a guarded turnover sum", async () => {
     const planner = planAssistantMcpDiscovery({
       turnMeaning: {

llm_normalizer/backend/tests/assistantMcpDiscoveryResponseCandidate.test.ts

@@ -223,10 +223,17 @@ describe("assistant MCP discovery response candidate", () => {
             confirmed_lines: [
               'Confirmed 1C metadata surface for scope "НДС": 7 rows and 3 matching objects',
               "Available metadata object sets: accumulation_register, document",
+              "Selected metadata entity set: Документ",
+              "Selected metadata objects: Документ.СчетФактураВыданный",
               "Available metadata fields/sections: amount, vat_rate, organization"
             ],
-            inference_lines: [],
-            unknown_lines: ['No matching 1C metadata objects were confirmed for scope "Прибыль"'],
+            inference_lines: [
+              "A likely next checked lane may be inferred as document_evidence from the confirmed metadata surface"
+            ],
+            unknown_lines: [
+              'No matching 1C metadata objects were confirmed for scope "Прибыль"',
+              "Exact downstream metadata surface remains ambiguous across: Документ, РегистрНакопления"
+            ],
             limitation_lines: ["Detailed metadata fields were not returned by this MCP metadata probe"],
             next_step_line: null
           }
@@ -236,8 +243,12 @@ describe("assistant MCP discovery response candidate", () => {
 
     expect(candidate.reply_text).toContain('В 1С подтверждена metadata-поверхность по области "НДС"');
     expect(candidate.reply_text).toContain("Доступные типы metadata-объектов");
+    expect(candidate.reply_text).toContain("Выбранное семейство metadata-объектов: Документ");
+    expect(candidate.reply_text).toContain("Выбранные metadata-объекты для следующего шага");
     expect(candidate.reply_text).toContain("Доступные metadata-поля/секции");
+    expect(candidate.reply_text).toContain("контур документов");
     expect(candidate.reply_text).toContain('В 1С не подтверждены metadata-объекты по области "Прибыль"');
+    expect(candidate.reply_text).toContain("неоднозначна между family");
     expect(candidate.reply_text).toContain("Эта MCP-проверка metadata не вернула детальный список полей");
     expect(candidate.reply_text).not.toContain("Confirmed 1C metadata surface");
   });