fix: replace raw ai_consent_required code with translatable message and consent prompt

- Centralize AI consent 403 responses in server-consent helpers
- Return human-readable message + code + i18n errorKey from all AI APIs
- Update dashboard and AI clients to detect code/errorKey and translate
- Add consent.ai.requiredToast i18n keys (fr/en)

memento-note/components/home-client.tsx

@@ -20,7 +20,7 @@ import {
 
 import { NotebookSuggestionToast } from '@/components/notebook-suggestion-toast'
 import { Button } from '@/components/ui/button'
-import { Plus, ArrowUpDown, Search, Sparkles, FileText, FolderOpen, ChevronRight, ChevronDown, Tag as TagIcon, X, Menu, LayoutGrid, List, Table, Columns3, CalendarDays, Wand2, Download, Upload, Globe } from 'lucide-react'
+import { Plus, ArrowUpDown, Search, Sparkles, FileText, FolderOpen, ChevronRight, ChevronDown, Tag as TagIcon, X, Menu, LayoutGrid, List, Table, Columns3, CalendarDays, Wand2, Download, Upload, Globe, Presentation } from 'lucide-react'
 import { emitNoteChange, NOTE_CHANGE_EVENT, type NoteChangeEvent } from '@/lib/note-change-sync'
 import { useReminderCheck } from '@/hooks/use-reminder-check'
 import { useAutoLabelSuggestion } from '@/hooks/use-auto-label-suggestion'
@@ -67,6 +67,10 @@ const NotebookSiteDialog = dynamic(
   () => import('@/components/wizard/notebook-site-dialog').then(m => ({ default: m.NotebookSiteDialog })),
   { ssr: false }
 )
+const NotebookSlidesDialog = dynamic(
+  () => import('@/components/wizard/notebook-slides-dialog').then(m => ({ default: m.NotebookSlidesDialog })),
+  { ssr: false }
+)
 const StructuredViewsIntro = dynamic(
   () => import('@/components/structured-views/structured-views-intro').then(m => ({ default: m.StructuredViewsIntro })),
   { ssr: false }
@@ -151,6 +155,7 @@ export function HomeClient({
   const [isEnablingStructured, setIsEnablingStructured] = useState(false)
   const [showStructuredWizard, setShowStructuredWizard] = useState(false)
   const [showNotebookSite, setShowNotebookSite] = useState(false)
+  const [showNotebookSlides, setShowNotebookSlides] = useState(false)
   const [aiMenuOpen, setAiMenuOpen] = useState(false)
   const aiMenuRef = useRef<HTMLDivElement>(null)
   const [showStudyPlanner, setShowStudyPlanner] = useState(false)
@@ -179,7 +184,7 @@ export function HomeClient({
         toast.success(`${data.created} notes importées !`)
         window.location.reload()
       } else {
-        toast.error(data.error || 'Erreur')
+        toast.error(data.errorKey ? t(data.errorKey) : (data.error || 'Erreur'))
       }
     }
     input.click()
@@ -1136,6 +1141,11 @@ export function HomeClient({
                               label: t('notebookSite.shortTitle') || 'Site web',
                               action: () => { setShowNotebookSite(true); setAiMenuOpen(false) },
                             },
+                            {
+                              icon: <Presentation size={14} />,
+                              label: t('notebook.slides') || 'Présentation',
+                              action: () => { setShowNotebookSlides(true); setAiMenuOpen(false) },
+                            },
                           ].map((item, i) => (
                             <button
                               key={i}
@@ -1452,6 +1462,14 @@ export function HomeClient({
           onClose={() => setShowNotebookSite(false)}
         />
       )}
+
+      {showNotebookSlides && currentNotebook && (
+        <NotebookSlidesDialog
+          notebookId={currentNotebook.id}
+          notebookName={currentNotebook.name}
+          onClose={() => setShowNotebookSlides(false)}
+        />
+      )}
     </div>
   )
 }