ARCH: проверить и расширить gate ответа MCP discovery

llm_normalizer/backend/tests/assistantLivingChatRuntimeAdapter.test.ts

@@ -229,6 +229,54 @@ describe("assistant living chat runtime adapter", () => {
     expect(executeLlmChat).not.toHaveBeenCalled();
   });
 
+  it("replaces discovery-ready llm chat business answer with guarded MCP discovery response", async () => {
+    const executeLlmChat = vi.fn(async () => "stale llm answer with old date");
+    const input = buildRuntimeInput({
+      userMessage: "how long has svk been active",
+      modeDecision: { mode: "chat", reason: "non_domain_query_indexed" },
+      addressRuntimeMeta: {
+        mcpDiscoveryRuntimeEntryPoint: {
+          schema_version: "assistant_mcp_discovery_runtime_entry_point_v1",
+          policy_owner: "assistantMcpDiscoveryRuntimeEntryPoint",
+          entry_status: "bridge_executed",
+          hot_runtime_wired: false,
+          discovery_attempted: true,
+          turn_input: {
+            adapter_status: "ready",
+            should_run_discovery: true
+          },
+          bridge: {
+            bridge_status: "answer_draft_ready",
+            user_facing_response_allowed: true,
+            business_fact_answer_allowed: true,
+            requires_user_clarification: false,
+            answer_draft: {
+              answer_mode: "confirmed_with_bounded_inference",
+              headline: "Confirmed scoped answer.",
+              confirmed_lines: ["Confirmed fact"],
+              inference_lines: ["Bounded inference"],
+              unknown_lines: ["Unconfirmed legal fact"],
+              limitation_lines: [],
+              next_step_line: null
+            }
+          },
+          reason_codes: ["runtime_entry_point_bridge_executed"]
+        }
+      },
+      executeLlmChat
+    });
+
+    const output = await runAssistantLivingChatRuntime(input);
+
+    expect(output.handled).toBe(true);
+    expect(output.chatText).toContain("Confirmed fact");
+    expect(output.chatText).not.toContain("old date");
+    expect(output.debug?.living_chat_response_source).toBe("mcp_discovery_response_candidate_guarded");
+    expect(output.debug?.mcp_discovery_response_applied).toBe(true);
+    expect(output.debug?.mcp_discovery_entry_status).toBe("bridge_executed");
+    expect(executeLlmChat).toHaveBeenCalledTimes(1);
+  });
+
   it("adds proactive organization offer on first smalltalk turn when multiple organizations are available", async () => {
     const resolveDataScopeProbe = vi.fn(async () => ({
       status: "resolved",

llm_normalizer/backend/tests/assistantMcpDiscoveryResponsePolicy.test.ts

@@ -63,6 +63,30 @@ describe("assistant MCP discovery response policy", () => {
     expect(result.reply_text).toBe("regular chat");
     expect(result.reply_source).toBe("llm_chat");
     expect(result.reason_codes).toContain("mcp_discovery_response_policy_not_unsupported_boundary");
+    expect(result.reason_codes).toContain("mcp_discovery_response_policy_not_discovery_ready_chat_candidate");
+  });
+
+  it("applies a guarded candidate for discovery-ready llm chat business answers", () => {
+    const result = applyAssistantMcpDiscoveryResponsePolicy({
+      currentReply: "stale llm business answer",
+      currentReplySource: "llm_chat",
+      modeDecisionReason: "non_domain_query_indexed",
+      addressRuntimeMeta: {
+        mcpDiscoveryRuntimeEntryPoint: entryPoint({
+          turn_input: {
+            adapter_status: "ready",
+            should_run_discovery: true
+          }
+        })
+      }
+    });
+
+    expect(result.applied).toBe(true);
+    expect(result.decision).toBe("apply_candidate");
+    expect(result.reply_source).toBe("mcp_discovery_response_candidate_guarded");
+    expect(result.reply_text).toContain("Confirmed fact");
+    expect(result.reason_codes).toContain("mcp_discovery_response_policy_not_unsupported_boundary");
+    expect(result.reason_codes).not.toContain("mcp_discovery_response_policy_not_discovery_ready_chat_candidate");
   });
 
   it("keeps the current reply when the candidate has no grounded text", () => {