cmd/core-runtime/main.go

@@ -813,6 +813,11 @@ func main() {
 				log.Printf("cognitive response review proposed stable semantic rewrite; preserving semantic reply")
 			}
 		}
+		if !responseResult.Handled && identityReply == "" {
+			if stableReply, stable := interactiondomain.StableConversationalReply(utterance.Content, deterministicSpeechAct); stable {
+				planningReply = stableReply
+			}
+		}
 		response := interaction.ChatMessageResponse{
 			ConversationID:                 conversation.ID,
 			UtteranceID:                    utterance.ID,

modules/interaction/domain/semantics.go

@@ -358,6 +358,29 @@ func semanticReply(message string, result SemanticResult, previousFocus *situati
 	return FallbackText(result.Interpretation.SpeechAct)
 }
 
+// StableConversationalReply returns the small set of low-risk conversational
+// replies whose meaning must remain owned by interaction even after a sampled
+// cognitive audit or a capability fast path.
+func StableConversationalReply(message string, act interaction.SpeechAct) (string, bool) {
+	switch act {
+	case interaction.SpeechActConversational:
+		lower := strings.ToLower(message)
+		if strings.Contains(lower, "спасибо") || strings.Contains(lower, "благодар") {
+			return "Пожалуйста.", true
+		}
+		if strings.Contains(lower, "привет") || strings.Contains(lower, "здравств") {
+			return "Здравствуйте.", true
+		}
+		return "Я рядом.", true
+	case interaction.SpeechActConfirmation:
+		return "Хорошо.", true
+	case interaction.SpeechActRejection:
+		return "Понял.", true
+	default:
+		return "", false
+	}
+}
+
 func isCurrentFocusQuestion(message string, act interaction.SpeechAct) bool {
 	if act != interaction.SpeechActQuestion {
 		return false

modules/interaction/domain/semantics_test.go

@@ -53,6 +53,13 @@ func TestInterpretUtteranceThanksHasNaturalConversationalReply(t *testing.T) {
 	}
 }
 
+func TestStableConversationalReplySurvivesCognitiveRewrite(t *testing.T) {
+	reply, stable := StableConversationalReply("спасибо", interaction.SpeechActConversational)
+	if !stable || reply != "Пожалуйста." {
+		t.Fatalf("unexpected stable conversational reply: stable=%t reply=%q", stable, reply)
+	}
+}
+
 func TestInterpretUtteranceDirectiveRecordsOutcomeWithoutExecution(t *testing.T) {
 	result := interpretForTest(t, "Поменяй базу на УПО1.", activeFocus("upo", "УПО"), "")
 	if result.Interpretation.SpeechAct != interaction.SpeechActDirective {