feat(search) : display reference alongside name in all entity select components

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/shared/utils/structureAssignmentLabels.ts

@@ -85,7 +85,8 @@ export const componentOptionLabel = (component?: ComponentOption | null): string
   if (!component) {
     return 'Composant sans nom'
   }
-  return component.name || 'Composant sans nom'
+  const name = component.name || 'Composant sans nom'
+  return component.reference ? `${name} — ${component.reference}` : name
 }
 
 export const componentOptionDescription = (component?: ComponentOption | null): string => {
@@ -110,9 +111,10 @@ export const componentOptionDescription = (component?: ComponentOption | null):
 
 export const pieceOptionLabel = (piece?: PieceOption | null): string => {
   if (!piece) {
-    return 'Pi\u00e8ce'
+    return 'Pièce'
   }
-  return piece.name || 'Pi\u00e8ce'
+  const name = piece.name || 'Pièce'
+  return piece.reference ? `${name} — ${piece.reference}` : name
 }
 
 export const pieceOptionDescription = (piece?: PieceOption | null): string => {
@@ -139,7 +141,8 @@ export const productOptionLabel = (product?: ProductOption | null): string => {
   if (!product) {
     return 'Produit'
   }
-  return product.name || product.reference || 'Produit'
+  const name = product.name || 'Produit'
+  return product.reference ? `${name} — ${product.reference}` : name
 }
 
 export const productOptionDescription = (product?: ProductOption | null): string => {