feat: dashboard Second Brain, essai 7 jours et vérification e-mail

Rendre le dashboard actionnable (inbox, peek, carte mentale), aligner la facturation sur l’essai 7 jours, et bloquer le login e-mail tant que l’adresse n’est pas confirmée.

Co-authored-by: Cursor <cursoragent@cursor.com>

memento-note/components/dashboard-widget-grid.tsx

@@ -40,6 +40,7 @@ import { toast } from 'sonner'
 
 interface DashboardWidgetGridProps {
   renderWidget: (id: DashboardWidgetId) => React.ReactNode
+  isWidgetEmpty?: (id: DashboardWidgetId) => boolean
 }
 
 function SortableWidget({
@@ -139,7 +140,7 @@ function ZoneColumn({
   )
 }
 
-export function DashboardWidgetGrid({ renderWidget }: DashboardWidgetGridProps) {
+export function DashboardWidgetGrid({ renderWidget, isWidgetEmpty }: DashboardWidgetGridProps) {
   const { t } = useLanguage()
   const [layout, setLayout] = useState<DashboardLayout>(() => getDefaultDashboardLayout())
   const [editMode, setEditMode] = useState(false)
@@ -228,8 +229,11 @@ export function DashboardWidgetGrid({ renderWidget }: DashboardWidgetGridProps)
   }, [persistLayout, t])
 
   const fullWidgets = visibleWidgetsInZone(layout, 'full')
+    .filter(w => editMode || !isWidgetEmpty?.(w.id))
   const mainWidgets = visibleWidgetsInZone(layout, 'main')
+    .filter(w => editMode || !isWidgetEmpty?.(w.id))
   const sideWidgets = visibleWidgetsInZone(layout, 'side')
+    .filter(w => editMode || !isWidgetEmpty?.(w.id))
   const hidden = hiddenWidgetIds(layout)
   const catalog = catalogByCategory(layout)
   const hasVisibleWidgets = fullWidgets.length + mainWidgets.length + sideWidgets.length > 0