diff --git a/frontend/app/components/layout/AppBreadcrumb.vue b/frontend/app/components/layout/AppBreadcrumb.vue
index bc31c72..bea7ab9 100644
--- a/frontend/app/components/layout/AppBreadcrumb.vue
+++ b/frontend/app/components/layout/AppBreadcrumb.vue
@@ -4,7 +4,7 @@
       <ul>
         <!-- First crumb (always visible) -->
         <li>
-          <NuxtLink :to="crumbs[0].path" class="text-base-content/60 hover:text-primary transition-colors">
+          <NuxtLink :to="crumbs[0].to" class="text-base-content/60 hover:text-primary transition-colors">
             {{ crumbs[0].label }}
           </NuxtLink>
         </li>
@@ -18,7 +18,7 @@
           :key="i"
           class="hidden sm:list-item"
         >
-          <NuxtLink :to="crumb.path" class="text-base-content/60 hover:text-primary transition-colors">
+          <NuxtLink :to="crumb.to" class="text-base-content/60 hover:text-primary transition-colors">
             {{ crumb.label }}
           </NuxtLink>
         </li>
@@ -32,15 +32,40 @@
 </template>
 
 <script setup lang="ts">
+import type { RouteLocationRaw } from 'vue-router'
+import { useListQueryMemory } from '~/composables/useListQueryMemory'
+
 interface Crumb {
   label: string
-  path: string
+  to: RouteLocationRaw
 }
 
 const route = useRoute()
+const { remember, recall } = useListQueryMemory()
+
+// Routes-listes dont la recherche / tri / pagination doit survivre à une
+// navigation par fil d'Ariane ou menu (qui ne passe pas par l'historique).
+const LIST_PATHS = ['/machines', '/catalogues/composants', '/catalogues/pieces', '/catalogues/produits']
+
+// On enregistre la query courante dès qu'on est sur une route-liste (et à chaque
+// changement de recherche/tri/pagination, qui modifie fullPath).
+watch(
+  () => route.fullPath,
+  () => {
+    if (LIST_PATHS.includes(route.path)) remember(route.path, route.query)
+  },
+  { immediate: true },
+)
+
+// Cible d'un crumb pointant vers une liste : on réinjecte la dernière query
+// mémorisée pour restaurer l'état, sinon chemin nu (liste neuve).
+const listTo = (path: string): RouteLocationRaw => {
+  const query = recall(path)
+  return query && Object.keys(query).length > 0 ? { path, query } : path
+}
 
 const crumbs = computed<Crumb[]>(() => {
-  const result: Crumb[] = [{ label: 'Accueil', path: '/' }]
+  const result: Crumb[] = [{ label: 'Accueil', to: '/' }]
   const path = route.path
 
   // Home page — no breadcrumb
@@ -48,88 +73,88 @@ const crumbs = computed<Crumb[]>(() => {
 
   // Machine context from query param (when navigating from a machine detail page)
   if (route.query.from === 'machine' && route.query.machineId) {
-    result.push({ label: 'Parc machines', path: '/machines' })
-    result.push({ label: 'Machine', path: `/machine/${route.query.machineId}` })
+    result.push({ label: 'Parc machines', to: listTo('/machines') })
+    result.push({ label: 'Machine', to: `/machine/${route.query.machineId}` })
   }
 
   // Machines
   if (path === '/machines') {
-    result.push({ label: 'Parc machines', path: '/machines' })
+    result.push({ label: 'Parc machines', to: listTo('/machines') })
   } else if (path.startsWith('/machine/') && !route.query.from) {
-    result.push({ label: 'Parc machines', path: '/machines' })
-    result.push({ label: 'Machine', path })
+    result.push({ label: 'Parc machines', to: listTo('/machines') })
+    result.push({ label: 'Machine', to: path })
   }
 
   // Catalogs
   else if (path.startsWith('/catalogues/composants')) {
-    result.push({ label: 'Composants', path: '/catalogues/composants' })
+    result.push({ label: 'Composants', to: listTo('/catalogues/composants') })
   } else if (path.startsWith('/catalogues/pieces')) {
-    result.push({ label: 'Pièces', path: '/catalogues/pieces' })
+    result.push({ label: 'Pièces', to: listTo('/catalogues/pieces') })
   } else if (path.startsWith('/catalogues/produits')) {
-    result.push({ label: 'Produits', path: '/catalogues/produits' })
+    result.push({ label: 'Produits', to: listTo('/catalogues/produits') })
   }
 
   // Entity detail pages (when NOT from machine context)
   else if (path.startsWith('/component/') && !route.query.from) {
-    result.push({ label: 'Composants', path: '/catalogues/composants' })
-    result.push({ label: 'Composant', path })
+    result.push({ label: 'Composants', to: listTo('/catalogues/composants') })
+    result.push({ label: 'Composant', to: path })
   } else if (path.startsWith('/piece/') && !route.query.from) {
-    result.push({ label: 'Pièces', path: '/catalogues/pieces' })
-    result.push({ label: 'Pièce', path })
+    result.push({ label: 'Pièces', to: listTo('/catalogues/pieces') })
+    result.push({ label: 'Pièce', to: path })
   } else if (path.startsWith('/product/') && !route.query.from) {
-    result.push({ label: 'Produits', path: '/catalogues/produits' })
-    result.push({ label: 'Produit', path })
+    result.push({ label: 'Produits', to: listTo('/catalogues/produits') })
+    result.push({ label: 'Produit', to: path })
   }
 
   // Entity detail pages WITH machine context — add entity as last crumb
   else if (path.startsWith('/component/') && route.query.from === 'machine') {
-    result.push({ label: 'Composant', path })
+    result.push({ label: 'Composant', to: path })
   } else if (path.startsWith('/piece/') && route.query.from === 'machine') {
-    result.push({ label: 'Pièce', path })
+    result.push({ label: 'Pièce', to: path })
   } else if (path.startsWith('/product/') && route.query.from === 'machine') {
-    result.push({ label: 'Produit', path })
+    result.push({ label: 'Produit', to: path })
   }
 
   // Admin pages
   else if (path.startsWith('/sites')) {
-    result.push({ label: 'Sites', path: '/sites' })
+    result.push({ label: 'Sites', to: '/sites' })
   } else if (path.startsWith('/constructeurs')) {
-    result.push({ label: 'Fournisseurs', path: '/constructeurs' })
+    result.push({ label: 'Fournisseurs', to: '/constructeurs' })
   } else if (path.startsWith('/activity-log')) {
-    result.push({ label: 'Journal d\'activité', path: '/activity-log' })
+    result.push({ label: 'Journal d\'activité', to: '/activity-log' })
   } else if (path.startsWith('/admin')) {
-    result.push({ label: 'Administration', path: '/admin' })
+    result.push({ label: 'Administration', to: '/admin' })
   } else if (path.startsWith('/documents')) {
-    result.push({ label: 'Documents', path: '/documents' })
+    result.push({ label: 'Documents', to: '/documents' })
   } else if (path.startsWith('/comments')) {
-    result.push({ label: 'Commentaires', path: '/comments' })
+    result.push({ label: 'Commentaires', to: '/comments' })
   }
 
   // Category pages
   else if (path.startsWith('/component-category')) {
-    result.push({ label: 'Composants', path: '/catalogues/composants' })
-    result.push({ label: 'Catégorie', path })
+    result.push({ label: 'Composants', to: listTo('/catalogues/composants') })
+    result.push({ label: 'Catégorie', to: path })
   } else if (path.startsWith('/piece-category')) {
-    result.push({ label: 'Pièces', path: '/catalogues/pieces' })
-    result.push({ label: 'Catégorie', path })
+    result.push({ label: 'Pièces', to: listTo('/catalogues/pieces') })
+    result.push({ label: 'Catégorie', to: path })
   } else if (path.startsWith('/product-category')) {
-    result.push({ label: 'Produits', path: '/catalogues/produits' })
-    result.push({ label: 'Catégorie', path })
+    result.push({ label: 'Produits', to: listTo('/catalogues/produits') })
+    result.push({ label: 'Catégorie', to: path })
   }
 
   // Create pages
   else if (path.startsWith('/pieces/create')) {
-    result.push({ label: 'Pièces', path: '/catalogues/pieces' })
-    result.push({ label: 'Nouvelle pièce', path })
+    result.push({ label: 'Pièces', to: listTo('/catalogues/pieces') })
+    result.push({ label: 'Nouvelle pièce', to: path })
   } else if (path.startsWith('/component/create')) {
-    result.push({ label: 'Composants', path: '/catalogues/composants' })
-    result.push({ label: 'Nouveau composant', path })
+    result.push({ label: 'Composants', to: listTo('/catalogues/composants') })
+    result.push({ label: 'Nouveau composant', to: path })
   } else if (path.startsWith('/product/create')) {
-    result.push({ label: 'Produits', path: '/catalogues/produits' })
-    result.push({ label: 'Nouveau produit', path })
+    result.push({ label: 'Produits', to: listTo('/catalogues/produits') })
+    result.push({ label: 'Nouveau produit', to: path })
   } else if (path === '/machines/new') {
-    result.push({ label: 'Parc machines', path: '/machines' })
-    result.push({ label: 'Nouvelle machine', path })
+    result.push({ label: 'Parc machines', to: listTo('/machines') })
+    result.push({ label: 'Nouvelle machine', to: path })
   }
 
   return result
diff --git a/frontend/app/composables/useListQueryMemory.ts b/frontend/app/composables/useListQueryMemory.ts
new file mode 100644
index 0000000..5a18ce7
--- /dev/null
+++ b/frontend/app/composables/useListQueryMemory.ts
@@ -0,0 +1,17 @@
+import { reactive } from 'vue'
+import type { LocationQuery } from 'vue-router'
+
+// Singleton module-level : mémorise la dernière query (recherche / tri /
+// pagination / filtres) vue sur chaque route-liste. Permet aux navigations qui
+// ne passent PAS par l'historique du navigateur (fil d'Ariane, menu) de
+// restaurer l'état de la liste, là où router.back() le ferait pour le bouton
+// Retour. SPA only (SSR off) — pas de fuite d'état entre requêtes.
+const memory = reactive<Record<string, LocationQuery>>({})
+
+export function useListQueryMemory() {
+  const remember = (path: string, query: LocationQuery) => {
+    memory[path] = { ...query }
+  }
+  const recall = (path: string): LocationQuery | undefined => memory[path]
+  return { remember, recall }
+}