feat(navigation) : preserve list state in URL and use browser history for back buttons

Add useUrlState composable to sync page, search, sort and filter state
with URL query params. Back/forward navigation now restores the exact
list position. Replace hardcoded NuxtLink back buttons with
router.back() across all create/edit pages. Fix documents attachment
filter that checked non-existent ID fields instead of relation objects.

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

app/pages/component/[id]/edit.vue

@@ -19,9 +19,9 @@
           </p>
         </div>
       </div>
-      <NuxtLink to="/component-catalog" class="btn btn-primary mt-6">
+      <button type="button" class="btn btn-primary mt-6" @click="$router.back()">
         Retour au catalogue
-      </NuxtLink>
+      </button>
     </div>
 
     <section v-else class="card border border-base-200 bg-base-100 shadow-sm max-w-5xl mx-auto">
@@ -33,9 +33,9 @@
               Mettez à jour les informations du composant et ses champs personnalisés.
             </p>
           </div>
-          <NuxtLink to="/component-catalog" class="btn btn-ghost btn-sm md:btn-md self-start">
+          <button type="button" class="btn btn-ghost btn-sm md:btn-md self-start" @click="$router.back()">
             Retour au catalogue
-          </NuxtLink>
+          </button>
         </header>
 
         <div class="grid grid-cols-1 gap-4 md:grid-cols-2">

app/pages/component/create.vue

@@ -7,9 +7,9 @@
           Sélectionnez la catégorie cible puis complétez les informations du composant.
         </p>
       </div>
-      <NuxtLink to="/component-catalog" class="btn btn-ghost btn-sm md:btn-md self-start">
+      <button type="button" class="btn btn-ghost btn-sm md:btn-md self-start" @click="$router.back()">
         Retour au catalogue
-      </NuxtLink>
+      </button>
     </header>
 
     <section class="card border border-base-200 bg-base-100 shadow-sm">