ARCH: проверить и расширить gate ответа MCP discovery

llm_normalizer/backend/src/services/assistantMcpDiscoveryResponsePolicy.ts

@@ -109,6 +109,19 @@ function isUnsupportedCurrentTurnBoundary(input: ApplyAssistantMcpDiscoveryRespo
   );
 }
 
+function isDiscoveryReadyChatCandidate(
+  input: ApplyAssistantMcpDiscoveryResponsePolicyInput,
+  entryPoint: AssistantMcpDiscoveryRuntimeEntryPointContract | null
+): boolean {
+  const turnInput = toRecordObject(entryPoint?.turn_input);
+  return (
+    entryPoint?.entry_status === "bridge_executed" &&
+    entryPoint.discovery_attempted === true &&
+    turnInput?.should_run_discovery === true &&
+    (input.livingChatSource === "llm_chat" || input.currentReplySource === "llm_chat")
+  );
+}
+
 export function applyAssistantMcpDiscoveryResponsePolicy(
   input: ApplyAssistantMcpDiscoveryResponsePolicyInput
 ): AssistantMcpDiscoveryResponsePolicyResult {
@@ -118,13 +131,18 @@ export function applyAssistantMcpDiscoveryResponsePolicy(
   const entryPoint = resolveEntryPoint(input);
   const candidate = buildAssistantMcpDiscoveryResponseCandidate(entryPoint);
   const reasonCodes = [...candidate.reason_codes];
+  const unsupportedBoundary = isUnsupportedCurrentTurnBoundary(input);
+  const discoveryReadyChatCandidate = isDiscoveryReadyChatCandidate(input, entryPoint);
 
   if (!entryPoint) {
     pushReason(reasonCodes, "mcp_discovery_response_policy_no_entry_point");
   }
-  if (!isUnsupportedCurrentTurnBoundary(input)) {
+  if (!unsupportedBoundary) {
     pushReason(reasonCodes, "mcp_discovery_response_policy_not_unsupported_boundary");
   }
+  if (!discoveryReadyChatCandidate) {
+    pushReason(reasonCodes, "mcp_discovery_response_policy_not_discovery_ready_chat_candidate");
+  }
   if (!ALLOWED_CANDIDATE_STATUSES.has(candidate.candidate_status)) {
     pushReason(reasonCodes, "mcp_discovery_response_policy_candidate_status_not_allowed");
   }
@@ -140,7 +158,7 @@ export function applyAssistantMcpDiscoveryResponsePolicy(
 
   const canApply =
     Boolean(entryPoint) &&
-    isUnsupportedCurrentTurnBoundary(input) &&
+    (unsupportedBoundary || discoveryReadyChatCandidate) &&
     ALLOWED_CANDIDATE_STATUSES.has(candidate.candidate_status) &&
     candidate.eligible_for_future_hot_runtime &&
     Boolean(toNonEmptyString(candidate.reply_text)) &&