feat(piece) : add quantity input to composant structure editor

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/components/StructureNodeEditor.vue

@@ -280,6 +280,18 @@
                       {{ piece.typePieceId ? `Sélection : ${getPieceTypeLabel(piece.typePieceId) || 'Inconnue'}` : 'Aucune famille sélectionnée' }}
                     </p>
                   </div>
+                  <div class="form-control">
+                    <label class="label py-1"><span class="label-text text-xs">Quantité</span></label>
+                    <input
+                      v-model.number="piece.quantity"
+                      type="number"
+                      :min="1"
+                      step="1"
+                      placeholder="Qté"
+                      class="input input-bordered input-sm md:input-md w-20"
+                      @input="piece.quantity = Math.max(1, piece.quantity || 1)"
+                    />
+                  </div>
                 </div>
                 <button v-if="!isPieceLocked(index)" type="button" class="btn btn-error btn-xs btn-square" @click="removePiece(index)">
                   <IconLucideTrash class="w-4 h-4" aria-hidden="true" />

app/composables/useStructureNodeCrud.ts

@@ -115,6 +115,7 @@ export function useStructureNodeCrud(props: StructureNodeCrudDeps) {
       reference: '',
       familyCode: '',
       role: '',
+      quantity: 1,
     })
   }