backend/src/main/java/com/printcalculator/controller/QuoteSessionController.java

@@ -130,6 +130,7 @@ public class QuoteSessionController {
     }
 
     @GetMapping("/{id}")
+    @Transactional(readOnly = true)
     public ResponseEntity<Map<String, Object>> getQuoteSession(@PathVariable UUID id) {
         QuoteSession session = sessionRepo.findById(id)
                 .orElseThrow(() -> new RuntimeException("Session not found"));

backend/src/main/java/com/printcalculator/repository/QuoteLineItemRepository.java

@@ -1,6 +1,7 @@
 package com.printcalculator.repository;
 
 import com.printcalculator.entity.QuoteLineItem;
+import org.springframework.data.jpa.repository.EntityGraph;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import java.util.List;
@@ -8,9 +9,16 @@ import java.util.Optional;
 import java.util.UUID;
 
 public interface QuoteLineItemRepository extends JpaRepository<QuoteLineItem, UUID> {
+    @EntityGraph(attributePaths = {"filamentVariant", "shopProduct", "shopProductVariant"})
     List<QuoteLineItem> findByQuoteSessionId(UUID quoteSessionId);
+
+    @EntityGraph(attributePaths = {"filamentVariant", "shopProduct", "shopProductVariant"})
     List<QuoteLineItem> findByQuoteSessionIdOrderByCreatedAtAsc(UUID quoteSessionId);
+
+    @EntityGraph(attributePaths = {"filamentVariant", "shopProduct", "shopProductVariant"})
     Optional<QuoteLineItem> findByIdAndQuoteSession_Id(UUID lineItemId, UUID quoteSessionId);
+
+    @EntityGraph(attributePaths = {"shopProductVariant"})
     Optional<QuoteLineItem> findFirstByQuoteSession_IdAndLineItemTypeAndShopProductVariant_Id(
             UUID quoteSessionId,
             String lineItemType,