fix(slots) : filter slot select options server-side instead of client-side

PieceSelect, ProductSelect and ComposantSelect were loading up to 200
items then filtering client-side by typeId. If the matching items were
not in the first 200, the dropdown appeared empty.

Now each select component uses API Platform filters (typePiece,
typeProduct, typeComposant) to fetch only relevant items server-side,
with local state to avoid overwriting the global catalog cache.

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

app/composables/usePieces.ts

@@ -43,6 +43,7 @@ interface LoadPiecesOptions {
   orderBy?: string
   orderDir?: 'asc' | 'desc'
   typeName?: string
+  typePieceId?: string
   force?: boolean
 }
 
@@ -119,17 +120,20 @@ export function usePieces() {
       orderBy = 'name',
       orderDir = 'asc',
       typeName,
+      typePieceId,
       force = false,
     } = options
 
-    if (!force && loaded.value && !search && !typeName && page === 1) {
+    // Only use cache for unfiltered full-catalog loads
+    if (!force && loaded.value && !search && !typeName && !typePieceId && page === 1) {
       return {
         success: true,
         data: { items: pieces.value, total: total.value, page, itemsPerPage },
       }
     }
 
-    if (loading.value) {
+    // For filtered queries, don't block on global loading state
+    if (!typePieceId && loading.value) {
       return {
         success: true,
         data: { items: pieces.value, total: total.value, page, itemsPerPage },
@@ -138,7 +142,6 @@ export function usePieces() {
 
     loading.value = true
     try {
-
       const params = new URLSearchParams()
       params.set('itemsPerPage', String(itemsPerPage))
       params.set('page', String(page))
@@ -151,20 +154,30 @@ export function usePieces() {
         params.set('typePiece.name', typeName.trim())
       }
 
+      if (typePieceId) {
+        params.set('typePiece', typePieceId)
+      }
+
       params.set(`order[${orderBy}]`, orderDir)
 
       const result = await get(`/pieces?${params.toString()}`)
       if (result.success) {
         const items = extractCollection(result.data)
         const enrichedItems = await Promise.all(items.map((item) => withResolvedConstructeurs(item)))
-        pieces.value = enrichedItems
-        total.value = extractTotal(result.data, items.length)
-        loaded.value = true
+        const resultTotal = extractTotal(result.data, items.length)
+
+        // Only update global cache for unfiltered queries
+        if (!typePieceId) {
+          pieces.value = enrichedItems
+          total.value = resultTotal
+          loaded.value = true
+        }
+
         return {
           success: true,
           data: {
             items: enrichedItems,
-            total: total.value,
+            total: resultTotal,
             page,
             itemsPerPage,
           },