fix: align SynthesisListItem with backend response (preview fields, not sections)

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

frontend/src/i18n/fr.ts

@@ -58,6 +58,7 @@ const fr = {
   'home.deleteTooltip': 'Supprimer',
   'home.deleteConfirmTooltip': 'Cliquer a nouveau pour confirmer',
   'home.noPreview': 'Aucune annonce majeure cette semaine.',
+  'home.previewCount': '{count} articles',
   'home.loadError': 'Erreur lors du chargement des syntheses.',
   'home.deleteError': 'Erreur lors de la suppression de la synthese.',
   'home.generationInProgress': 'Une generation est en cours...',

frontend/src/pages/Home.tsx

@@ -178,16 +178,13 @@ const Home: Component = () => {
                     </h3>
                     <div class="text-sm text-gray-600 space-y-1.5">
                       <Show
-                        when={synth.sections?.[0]?.items?.length > 0}
+                        when={synth.first_section_title}
-                        fallback={
+                        fallback={<p>{t('home.noPreview')}</p>}
-                          <p>{t('home.noPreview')}</p>
-                        }
                       >
-                        <For each={synth.sections[0].items.slice(0, 4)}>
+                        <p class="font-medium text-gray-700">{synth.first_section_title}</p>
-                          {(item) => (
+                        <p class="text-gray-500">
-                            <p class="line-clamp-2">&bull; {item.title}</p>
+                          {t('home.previewCount', { count: String(synth.first_section_item_count) })}
-                          )}
+                        </p>
-                        </For>
                       </Show>
                     </div>
                   </div>

frontend/src/types.ts

@@ -122,9 +122,10 @@ export interface Synthesis {
 export interface SynthesisListItem {
   id: string;
   week: string;
-  sections: NewsSection[];
   status: string;
   created_at: string;
+  first_section_title: string | null;
+  first_section_item_count: number;
 }
 
 export interface GenerateResponse {