fix: Memory Echo sans vol de scroll, badge IA sidebar, wizard langue

- Ne plus auto-scroller vers Memory Echo : pastille bas de page + reset scroll au titre
- Badges notes/carnets générés par l’IA dans la sidebar
- Wizard : langue du contenu = langue de la requête ; refresh carnet après création
- Voix : erreurs not-allowed/no-speech moins bruyantes

memento-note/app/api/ai/notebook-wizard/route.ts

@@ -33,6 +33,7 @@ export async function POST(request: NextRequest) {
       throw err
     }
 
+    // language = UI locale (fallback only). Content language = language of the topic string.
     const result = await notebookWizardService.generateCarnet(
       profile as WizardProfile,
       topic,
@@ -47,13 +48,20 @@ export async function POST(request: NextRequest) {
       || topic.trim().slice(0, 60)
     ).slice(0, 80)
 
+    // Place new notebook at top of manual order (before existing min order)
+    const minOrder = await prisma.notebook.aggregate({
+      where: { userId: session.user.id, trashedAt: null },
+      _min: { order: true },
+    })
+    const nextOrder = (minOrder._min.order ?? 0) - 1
+
     // 1. Create notebook
     const notebook = await prisma.notebook.create({
       data: {
         name: resolvedName,
         icon: notebookIcon || '📚',
         userId: session.user.id,
-        order: 0,
+        order: nextOrder,
       },
     })
 
@@ -95,6 +103,8 @@ export async function POST(request: NextRequest) {
           notebookId: notebook.id,
           type: 'richtext',
           order: noteIndex++,
+          autoGenerated: true,
+          aiProvider: 'notebook-wizard',
         },
       })