fix: removed redundant global add button from warehouse tab

src/pages/Admin.vue

@@ -33,7 +33,7 @@
             <input type="text" v-model="searchQuery" :placeholder="t('admin.searchPlaceholder', { tab: activeTab })"
               class="w-full bg-card/40 border border-border/50 rounded-xl pl-10 pr-4 py-2.5 focus:outline-none focus:ring-2 focus:ring-primary/20 transition-all text-sm" />
           </div>
-          <Button v-if="activeTab !== 'orders' && activeTab !== 'audit'" variant="hero" class="gap-2 sm:px-8" @click="handleAddNew">
+          <Button v-if="activeTab !== 'orders' && activeTab !== 'audit' && activeTab !== 'warehouse'" variant="hero" class="gap-2 sm:px-8" @click="handleAddNew">
             <Plus class="w-4 h-4" />{{ t("admin.addNew") }}
           </Button>
         </div>