fix(custom-fields) : propage le renommage d'un champ dans la formule de reference auto

src/Service/SkeletonStructureService.php

@@ -226,6 +226,13 @@ class SkeletonStructureService
             }
 
             if ($existingField) {
+                // Propagate rename to the parent ModelType's reference formula and required-fields list
+                // so existing `{oldName}` placeholders keep resolving after the field is renamed.
+                $oldName = $existingField->getName();
+                if ($oldName !== $normalized['name']) {
+                    $this->propagateCustomFieldRename($modelType, $oldName, $normalized['name']);
+                }
+
                 // Update existing field
                 $existingField->setName($normalized['name']);
                 $existingField->setType($normalized['type']);
@@ -264,6 +271,38 @@ class SkeletonStructureService
         }
     }
 
+    private function propagateCustomFieldRename(ModelType $modelType, string $oldName, string $newName): void
+    {
+        $formula = $modelType->getReferenceFormula();
+        if (null !== $formula && '' !== $formula) {
+            $newFormula = preg_replace(
+                '/\{'.preg_quote($oldName, '/').'\}/',
+                '{'.$newName.'}',
+                $formula
+            );
+            if (null !== $newFormula && $newFormula !== $formula) {
+                $modelType->setReferenceFormula($newFormula);
+            }
+        }
+
+        $required = $modelType->getRequiredFieldsForReference();
+        if ($required) {
+            $changed     = false;
+            $newRequired = [];
+            foreach ($required as $fieldName) {
+                if ($fieldName === $oldName) {
+                    $newRequired[] = $newName;
+                    $changed       = true;
+                } else {
+                    $newRequired[] = $fieldName;
+                }
+            }
+            if ($changed) {
+                $modelType->setRequiredFieldsForReference($newRequired);
+            }
+        }
+    }
+
     /**
      * Normalize frontend custom field data to a common shape.
      *