refactor: remove unused page hero components

app/pages/index.vue

@@ -1,12 +1,5 @@
 <template>
   <main class="container mx-auto px-6 py-8">
-    <!-- Hero Section -->
-    <PageHero
-      title="Dashboard Inventaire"
-      subtitle="Vue hiérarchique de vos sites et machines industrielles."
-      min-height="min-h-[24vh]"
-      max-width="max-w-md"
-    />
 
     <!-- Hierarchical View -->
     <div class="my-8">
@@ -430,7 +423,7 @@ import { useSites } from '~/composables/useSites'
 import { useMachineTypesApi } from '~/composables/useMachineTypesApi'
 import { useMachines } from '~/composables/useMachines'
 import { useToast } from '~/composables/useToast'
-import PageHero from '~/components/PageHero.vue'
+
 
 const { sites, loading, loadSites, createSite } = useSites()
 const { machineTypes, loadMachineTypes } = useMachineTypesApi()