diff --git a/src/modules/rag-chat/rag-chat.service.ts b/src/modules/rag-chat/rag-chat.service.ts
index e7018f3..dddb8d9 100644
--- a/src/modules/rag-chat/rag-chat.service.ts
+++ b/src/modules/rag-chat/rag-chat.service.ts
@@ -52,6 +52,7 @@ export class RagChatService {
     });
 
     // Retrieve knowledge base context
+    this.logger.log(`RAG: kbId=${session.knowledgeBaseId}, content preview: ${content.substring(0, 30)}`);
     const context = await this.loadContext(session.knowledgeBaseId);
     this.logger.log(`RAG context: isEmpty=${context.isEmpty}, textLen=${context.text.length}, citations=${context.citations.length}, aiGateway=${!!this.aiGateway}`);