diff --git a/cmd/core-runtime/main.go b/cmd/core-runtime/main.go
index c61a1fc..b195ad4 100644
--- a/cmd/core-runtime/main.go
+++ b/cmd/core-runtime/main.go
@@ -792,7 +792,9 @@ func main() {
 						replies = append(replies, "По запросу «"+part+"»: "+clarification)
 						continue
 					}
-					searchQuery := interactiondomain.TravelResearchQuery(part, conversationHistory, now)
+					learnedLexicon := interactiondomain.TaskLexiconFromHistory(conversationHistory)
+					searchQuery := interactiondomain.SearchQueryWithLexicon(part, learnedLexicon)
+					searchQuery = interactiondomain.TravelResearchQuery(searchQuery, conversationHistory, now)
 					researchCtx, cancelResearch := context.WithTimeout(r.Context(), 8*time.Second)
 					result, researchErr := researchClient.SearchWeb(researchCtx, epistemics.WebSearchRequest{
 						Plan:           epistemics.ResearchPlan{ID: epistemics.ResearchPlanID(fmt.Sprintf("plan:%s:%d", planID, index)), Question: searchQuery, SourceClasses: []string{"web-search"}, FreshnessPolicy: "current"},
diff --git a/modules/interaction/domain/chat_test.go b/modules/interaction/domain/chat_test.go
index 6038a19..bbd5d99 100644
--- a/modules/interaction/domain/chat_test.go
+++ b/modules/interaction/domain/chat_test.go
@@ -204,6 +204,14 @@ func TestDecomposeUsesRememberedAliasesAcrossWordings(t *testing.T) {
 	}
 }
 
+func TestTaskLexiconFromHistoryFeedsSearchQueryWithoutCoreAlias(t *testing.T) {
+	history := []interaction.HumanUtterance{{Content: "запомни: WB — это Wildberries, источник для поиска"}}
+	lexicon := TaskLexiconFromHistory(history)
+	if got := SearchQueryWithLexicon("найди на WB бренд marka-wear", lexicon); got != "найди на WB бренд marka-wear wildberries" {
+		t.Fatalf("learned source was not applied to search: %q", got)
+	}
+}
+
 func TestDecomposeCreativeRequestDoesNotInventResearch(t *testing.T) {
 	lexicon := TaskLexicon{ObjectAliases: []TaskLexiconEntry{{Alias: "медвед", Value: "IMAGE"}}}
 	got := DecomposeTaskWithLexicon("нарисуй бурого медведя", lexicon)
diff --git a/modules/interaction/domain/task_decomposition.go b/modules/interaction/domain/task_decomposition.go
index b55e2e9..6890c3f 100644
--- a/modules/interaction/domain/task_decomposition.go
+++ b/modules/interaction/domain/task_decomposition.go
@@ -2,6 +2,8 @@ package domain
 
 import "strings"
 
+import "git.cin.su/m/Assistant/contracts/interaction"
+
 // TaskDecomposition is the small, typed intermediate representation used
 // before a capability is called. It separates the user's goal from the
 // object, source and target instead of treating the whole sentence as a
@@ -38,6 +40,51 @@ func DecomposeTask(message string) TaskDecomposition {
 	return DecomposeTaskWithLexicon(message, TaskLexicon{})
 }
 
+// TaskLexiconFromHistory rebuilds learned search-source aliases from ordinary
+// human utterances. The fact remains user-owned conversational memory; core
+// code never embeds mutable marketplace or provider names.
+//
+// A source fact has the deliberately explicit form:
+// "запомни: <alias> — это <source>, источник для поиска".
+func TaskLexiconFromHistory(history []interaction.HumanUtterance) TaskLexicon {
+	lexicon := TaskLexicon{}
+	for _, utterance := range history {
+		message := strings.TrimSpace(utterance.Content)
+		lower := strings.ToLower(message)
+		if !strings.Contains(lower, "источник") || !strings.Contains(lower, "поиск") || !strings.Contains(lower, "это") {
+			continue
+		}
+		before, after, found := strings.Cut(lower, "это")
+		if !found {
+			continue
+		}
+		alias := strings.TrimSpace(strings.TrimPrefix(before, "запомни:"))
+		alias = strings.Trim(alias, " \t—-:;,")
+		value := strings.TrimSpace(after)
+		if index := strings.IndexAny(value, ",;."); index >= 0 {
+			value = strings.TrimSpace(value[:index])
+		}
+		if len([]rune(alias)) < 2 || len([]rune(value)) < 2 {
+			continue
+		}
+		lexicon.SourceAliases = append(lexicon.SourceAliases, TaskLexiconEntry{Alias: alias, Value: value})
+	}
+	return lexicon
+}
+
+// SearchQueryWithLexicon keeps a learned source in the external query without
+// turning its alias into core vocabulary.
+func SearchQueryWithLexicon(message string, lexicon TaskLexicon) string {
+	decomposition := DecomposeTaskWithLexicon(message, lexicon)
+	if decomposition.Intent == TaskIntentSearch && decomposition.Source != "" {
+		if decomposition.Target != "" {
+			return decomposition.Target + " " + decomposition.Source
+		}
+		return strings.TrimSpace(message) + " " + decomposition.Source
+	}
+	return strings.TrimSpace(message)
+}
+
 // DecomposeTaskWithLexicon performs a cheap semantic pass. The lexicon is
 // intentionally an input: a remembered alias may be revalidated or replaced
 // without changing the parser or shipping a new hard-coded branch.