Allow review of backed research answers

Reviewed-on: #401

cmd/core-runtime/main.go

@@ -999,7 +999,13 @@ func main() {
 				ConfidenceMillis:       semantic.Interpretation.ConfidenceMillis,
 			})
 			cancelReview()
-			stableSemanticReply := mediaAttempted || identityReply != "" || memoryInstructionReply != "" || creativeReply != "" || (creativeFallbackReply != "" && !cognitiveAvailable) || semantic.InformationRequestKind != "" || locationReply != "" || deterministicSpeechAct == interaction.SpeechActConversational || deterministicSpeechAct == interaction.SpeechActConfirmation || deterministicSpeechAct == interaction.SpeechActRejection
+			// A source-backed research result is owned by the research capability,
+			// but its wording is not canonical state. Let the cognitive editor turn
+			// it into a useful human answer while reviewPreservesResearchEvidence
+			// still requires the source evidence to remain present. Information
+			// requests without research (identity, channel state and so on) remain
+			// stable semantic replies and cannot be rewritten here.
+			stableSemanticReply := mediaAttempted || identityReply != "" || memoryInstructionReply != "" || creativeReply != "" || (creativeFallbackReply != "" && !cognitiveAvailable) || (semantic.InformationRequestKind != "" && !(researchAttempted && researchBacked)) || locationReply != "" || deterministicSpeechAct == interaction.SpeechActConversational || deterministicSpeechAct == interaction.SpeechActConfirmation || deterministicSpeechAct == interaction.SpeechActRejection
 			if reviewErr != nil {
 				log.Printf("cognitive response review unavailable: %v", reviewErr)
 			} else if reviewMayReplacePlanningReply(stableSemanticReply, stableKnowledgeReply, researchAttempted, researchBacked, reviewedReply, planningReply) {
@@ -1847,6 +1853,9 @@ func researchFindingMatchesIntent(query string, finding epistemics.ResearchFindi
 	if ticketSearchQuery(query) && !ticketFindingMatchesDestination(query, finding) {
 		return false
 	}
+	if distanceResearchQuery(query) && !containsDistanceEvidence(finding.Excerpt.Text) {
+		return false
+	}
 	if !nearestFlightQuery(query) {
 		return true
 	}
@@ -1876,6 +1885,15 @@ func researchFindingMatchesIntent(query string, finding epistemics.ResearchFindi
 	return true
 }
 
+func distanceResearchQuery(query string) bool {
+	lower := strings.ToLower(query)
+	return strings.Contains(lower, "расстоян") || strings.Contains(lower, "километр")
+}
+
+func containsDistanceEvidence(value string) bool {
+	return regexp.MustCompile(`(?i)\b\d[\d\s]*\s*(?:км|километр)`).MatchString(value)
+}
+
 func ticketSearchQuery(query string) bool {
 	return interactiondomain.TicketSearchDestination(query) != ""
 }

cmd/core-runtime/main_test.go

@@ -70,6 +70,18 @@ func TestTicketReplyRejectsGenericCategoryPageWithoutDestination(t *testing.T) {
 	}
 }
 
+func TestDistanceReplyRejectsCalculatorPageWithoutDistance(t *testing.T) {
+	query := "расстояние между Москве и Сочи в километрах по прямой и по дороге"
+	calculator := epistemics.ResearchFinding{Source: epistemics.Source{Title: "Расчет расстояний"}, Excerpt: epistemics.SourceExcerpt{Text: "Калькулятор рассчитывает точное расстояние между городами."}}
+	if researchFindingMatchesIntent(query, calculator) {
+		t.Fatal("distance calculator landing page was presented without a measured distance")
+	}
+	measured := epistemics.ResearchFinding{Source: epistemics.Source{Title: "Маршрут"}, Excerpt: epistemics.SourceExcerpt{Text: "Расстояние по дороге составляет 1 620 км."}}
+	if !researchFindingMatchesIntent(query, measured) {
+		t.Fatal("measured distance evidence was rejected")
+	}
+}
+
 func TestResearchReplyRejectsGenericLandingPageForConcreteIdentifier(t *testing.T) {
 	result := epistemics.ResearchResult{Findings: []epistemics.ResearchFinding{{
 		State:   epistemics.FindingSupported,
@@ -126,6 +138,11 @@ func TestResponseReviewPreservesAttemptedResearchOutcome(t *testing.T) {
 	if !reviewMayReplacePlanningReply(true, true, false, false, "Санкт-Петербург — город в России.", "Меня зовут Домовой. Санкт-Петербург — город в России.") {
 		t.Fatal("stable-knowledge draft must be eligible for semantic quality review")
 	}
+	// The caller must not mark a source-backed research result as immutable
+	// semantic state: it may be rewritten, but only with its evidence retained.
+	if !reviewMayReplacePlanningReply(false, false, true, true, "Из Москвы в Сочи можно добраться самолётом или поездом. Источник: https://example.test", "Сырые результаты. Источник: https://example.test") {
+		t.Fatal("source-backed research draft must be eligible for human-facing review")
+	}
 }
 
 func TestBearerTokenRequiresBearerScheme(t *testing.T) {