fix(ui) : show type name and ref in slot selects, stay on page after save

- PieceSelect, ProductSelect, ComposantSelect: show type name and
  "Ref." prefix in dropdown descriptions (matching create page format)
- Category edit pages (component, piece, product): stay on page after
  successful save instead of navigating back to list
- Component and product edit pages: same — stay on page after save

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

app/components/ComposantSelect.vue

@@ -98,8 +98,12 @@ const updateValue = (value: string | number | null | undefined) => {
 
 const formatDescription = (option: any) => {
   const parts: string[] = []
+  const typeName = option?.typeComposant?.name
+  if (typeName) {
+    parts.push(typeName)
+  }
   if (option?.reference) {
-    parts.push(option.reference)
+    parts.push(`Ref. ${option.reference}`)
   }
   if (option?.prix !== undefined && option.prix !== null) {
     const price = Number(option.prix)

app/components/PieceSelect.vue

@@ -98,8 +98,12 @@ const updateValue = (value: string | number | null | undefined) => {
 
 const formatDescription = (option: any) => {
   const parts: string[] = []
+  const typeName = option?.typePiece?.name
+  if (typeName) {
+    parts.push(typeName)
+  }
   if (option?.reference) {
-    parts.push(option.reference)
+    parts.push(`Ref. ${option.reference}`)
   }
   if (option?.prix !== undefined && option.prix !== null) {
     const price = Number(option.prix)

app/components/ProductSelect.vue

@@ -98,8 +98,12 @@ const updateValue = (value: string | number | null | undefined) => {
 
 const formatDescription = (option: any) => {
   const parts: string[] = []
+  const typeName = option?.typeProduct?.name
+  if (typeName) {
+    parts.push(typeName)
+  }
   if (option?.reference) {
-    parts.push(option.reference)
+    parts.push(`Ref. ${option.reference}`)
   }
   if (option?.supplierPrice !== undefined && option.supplierPrice !== null) {
     const price = Number(option.supplierPrice)