docs: add comprehensive Stripe billing guide

Covers architecture, configuration steps, user flows, API routes,
webhooks, pricing, testing with Stripe CLI, production checklist,
and troubleshooting.

memento-note/components/ai-chat.tsx

@@ -58,13 +58,9 @@ export function AIChat({ showFloatingTrigger = true }: { showFloatingTrigger?: b
         if (parsed.error === 'QUOTA_EXCEEDED') {
           const isBasic = (parsed.currentTier || 'BASIC') === 'BASIC'
           toast.error(
-            language === 'fr'
-              ? isBasic
-                ? 'Le chat IA est réservé au plan PRO et supérieur.'
-                : `Limite mensuelle atteinte pour le plan ${parsed.currentTier}. Elle se réinitialise le mois prochain.`
-              : isBasic
-                ? 'AI Chat is available from the PRO plan onwards.'
-                : `Monthly quota reached for ${parsed.currentTier} plan. It will reset next month.`,
+            isBasic
+              ? t('chat.quotaExceededBasic')
+              : t('chat.quotaExceededTier', { tier: parsed.currentTier }),
             { duration: 8000 }
           )
           return

memento-note/components/brainstorm/activity-feed.tsx

@@ -40,7 +40,7 @@ function getActionLabel(action: string, t: (key: string) => string | undefined):
 function timeAgo(dateStr: string, t: (key: string) => string | undefined): string {
   const diff = Date.now() - new Date(dateStr).getTime()
   const mins = Math.floor(diff / 60000)
-  if (mins < 1) return t('brainstorm.justNow') || 'just now'
+  if (mins < 1) return t('brainstorm.justNow')
   if (mins < 60) return `${mins}m`
   const hours = Math.floor(mins / 60)
   if (hours < 24) return `${hours}h`
@@ -63,7 +63,7 @@ export function ActivityFeed({ activities, isOpen, onToggle, t }: ActivityFeedPr
             <div className="flex items-center gap-2">
               <Activity size={14} className="text-orange-500" />
               <h3 className="text-[10px] font-bold uppercase tracking-[0.2em] text-foreground">
-                {t('brainstorm.activityTitle') || 'Activity'}
+                {t('brainstorm.activityTitle')}
               </h3>
             </div>
             <button
@@ -78,7 +78,7 @@ export function ActivityFeed({ activities, isOpen, onToggle, t }: ActivityFeedPr
             {activities.length === 0 ? (
               <div className="p-6 text-center">
                 <p className="text-xs italic text-muted-foreground">
-                  {t('brainstorm.noActivity') || 'No activity yet'}
+                  {t('brainstorm.noActivity')}
                 </p>
               </div>
             ) : (

memento-note/components/brainstorm/brainstorm-page.tsx

@@ -289,7 +289,7 @@ export function BrainstormPage() {
             </motion.div>
             <div className="flex-1">
               <h1 className="text-4xl font-serif font-medium text-foreground tracking-tight">
-                {t('brainstorm.title') || 'Waves of Thought'}
+                {t('brainstorm.title')}
               </h1>
               <div className="flex items-center gap-2 mt-1">
                 <span className="w-8 h-px bg-brand-accent/40" />

memento-note/components/home-client.tsx

@@ -185,7 +185,7 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
         handleNoteCreated(newNote)
         setEditingNote({ note: newNote, readOnly: false })
       } catch {
-        toast.error(t('notes.createFailed') || 'Failed to create note')
+        toast.error(t('notes.createFailed'))
       }
     })
   }
@@ -429,10 +429,10 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
   }, [sortedNotes])
 
   const sortLabels: Record<SortOrder, string> = {
-    newest: t('sidebar.sortNewest') || 'Plus récentes',
-    oldest: t('sidebar.sortOldest') || 'Plus anciennes',
-    alpha: t('sidebar.sortAlpha') || 'A → Z',
-    manual: t('sidebar.sortManual') || 'Libre',
+    newest: t('sidebar.sortNewest'),
+    oldest: t('sidebar.sortOldest'),
+    alpha: t('sidebar.sortAlpha'),
+    manual: t('sidebar.sortManual'),
   }
 
 
@@ -495,9 +495,9 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                   {currentNotebook 
                     ? currentNotebook.name 
                     : searchParams.get('shared') === '1' 
-                      ? (t('sidebar.sharedWithMe') || 'Partagées avec moi')
+                      ? t('sidebar.sharedWithMe')
                       : searchParams.get('reminders') === '1'
-                        ? (t('sidebar.reminders') || 'Rappels')
+                        ? t('sidebar.reminders')
                         : t('notes.title')}
                 </h1>
               </div>
@@ -511,7 +511,7 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                   className="flex items-center gap-2 text-[13px] text-foreground font-medium hover:opacity-70 transition-opacity"
                 >
                   <Plus size={16} />
-                  <span>{t('notes.newNote') || 'Add Note'}</span>
+                  <span>{t('notes.newNote')}</span>
                 </button>
 
                 {currentNotebook && (
@@ -520,7 +520,7 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                     className="flex items-center gap-2 text-[13px] text-foreground font-medium hover:opacity-70 transition-opacity"
                   >
                     <FolderOpen size={16} />
-                    <span>{t('notebook.createSubNotebook') || 'Nouveau sous-carnet'}</span>
+                    <span>{t('notebook.createSubNotebook')}</span>
                   </button>
                 )}
 
@@ -558,7 +558,7 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                           router.push(`/home?${params.toString()}`)
                         }
                       }}
-                      placeholder={t('search.placeholder') || 'Rechercher...'}
+                      placeholder={t('search.placeholder')}
                       className="w-48 bg-transparent border-b border-foreground/20 focus:border-foreground outline-none text-[13px] text-foreground placeholder:text-muted-foreground/50 py-0.5 transition-colors"
                     />
                     {inlineSearchQuery && (
@@ -585,7 +585,7 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                     className="flex items-center gap-2 text-[13px] text-foreground font-medium hover:opacity-70 transition-opacity"
                   >
                     <Search size={16} />
-                    <span>{t('notes.search') || 'Search'}</span>
+                    <span>{t('notes.search')}</span>
                   </button>
                 )}
 
@@ -595,7 +595,7 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                     className="flex items-center gap-2 text-[13px] text-foreground font-medium hover:opacity-70 transition-opacity"
                   >
                     <Sparkles size={16} />
-                    <span>{t('notes.reorganize') || 'Réorganiser les notes'}</span>
+                    <span>{t('notes.reorganize')}</span>
                   </button>
                 )}
 
@@ -622,7 +622,7 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                     title={initialSettings.aiAssistantEnabled ? t('notebook.summary') : t('notebook.assistantRequiredForSummarize')}
                   >
                     <FileText size={16} />
-                    <span>{t('notebook.summary') || 'Summarize'}</span>
+                    <span>{t('notebook.summary')}</span>
                   </button>
                 )}
                 <button
@@ -640,7 +640,7 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                 <div className="flex items-center justify-between">
                   <div className="flex items-center gap-3 text-[10px] font-bold uppercase tracking-[0.2em] text-muted-foreground">
                     <TagIcon size={12} />
-                    <span>{t('labels.filterByTags') || 'Filter by Tags'}</span>
+                    <span>{t('labels.filterByTags')}</span>
                     {selectedTagIds.length > 0 && (
                       <span className="bg-brand-accent/10 text-brand-accent px-2 py-0.5 rounded-full text-[9px] lowercase tracking-normal">
                         {selectedTagIds.length} active
@@ -650,7 +650,7 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                   {availableTags.length > 10 && (
                     <input
                       type="text"
-                      placeholder={t('labels.searchTags') || 'Search tags...'}
+                      placeholder={t('labels.searchTags')}
                       className="bg-transparent border-b border-foreground/10 text-[10px] outline-none focus:border-brand-accent/40 py-1 px-2 w-32 transition-all focus:w-48 placeholder:text-muted-foreground/40"
                       value={tagSearchQuery}
                       onChange={e => setTagSearchQuery(e.target.value)}
@@ -696,7 +696,7 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                       className="px-3 py-1.5 text-[10px] font-bold uppercase tracking-wider text-muted-foreground/60 hover:text-foreground transition-colors border border-dashed border-border rounded-full"
                     >
                       {isTagsExpanded
-                        ? (t('labels.showLess') || 'Show less')
+                        ? t('labels.showLess')
                         : `+ ${availableTags.length - 10} more`}
                     </button>
                   )}
@@ -706,7 +706,7 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                       onClick={() => setSelectedTagIds([])}
                       className="px-3 py-1.5 text-[10px] font-bold uppercase tracking-wider text-red-500 hover:underline ms-auto"
                     >
-                      {t('labels.clearAll') || 'Clear all'}
+                      {t('labels.clearAll')}
                     </button>
                   )}
                 </div>
@@ -745,14 +745,14 @@ export function HomeClient({ initialNotes, initialSettings }: HomeClientProps) {
                 {notes.length === 0 && (
                   <div className="h-64 flex flex-col items-center justify-center text-center space-y-4">
                     <p className="font-memento-serif text-xl italic text-muted-foreground">
-                      {t('notes.emptyState') || 'This notebook is waiting for its first vision.'}
+                      {t('notes.emptyState')}
                     </p>
                     <button
                       onClick={handleAddNote}
                       disabled={isCreating}
                       className="px-6 py-2 border border-foreground text-[13px] uppercase tracking-[0.2em] hover:bg-foreground hover:text-background transition-all"
                     >
-                      {t('notes.createFirst') || 'Begin Drawing'}
+                      {t('notes.createFirst')}
                     </button>
                   </div>
                 )}

memento-note/components/legal/cookie-preferences-dialog.tsx

@@ -0,0 +1,126 @@
+'use client'
+
+import { useEffect, useState } from 'react'
+import { useLanguage } from '@/lib/i18n'
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog'
+import { getConsent, setConsent } from '@/lib/consent/cookie-consent'
+import { toast } from 'sonner'
+
+interface CookiePreferencesDialogProps {
+  open: boolean
+  onOpenChange: (open: boolean) => void
+}
+
+export function CookiePreferencesDialog({ open, onOpenChange }: CookiePreferencesDialogProps) {
+  const { t } = useLanguage()
+  const [analytics, setAnalytics] = useState(false)
+
+  useEffect(() => {
+    if (!open) return
+    const current = getConsent()
+    setAnalytics(current?.analytics ?? false)
+  }, [open])
+
+  const handleSave = () => {
+    setConsent({ analytics, marketing: false })
+    toast.success(t('consent.preferences.saved'))
+    onOpenChange(false)
+  }
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="max-w-lg border-border bg-memento-paper dark:bg-background">
+        <DialogHeader>
+          <DialogTitle className="font-memento-serif text-xl text-ink">
+            {t('consent.preferences.title')}
+          </DialogTitle>
+          <DialogDescription className="text-[11px] text-concrete leading-relaxed">
+            {t('consent.preferences.description')}
+          </DialogDescription>
+        </DialogHeader>
+
+        <motionless className="space-y-6 py-2">
+          <CategoryRow
+            title={t('consent.preferences.necessaryTitle')}
+            description={t('consent.preferences.necessaryDesc')}
+            locked
+            checked
+          />
+          <CategoryRow
+            title={t('consent.preferences.analyticsTitle')}
+            description={t('consent.preferences.analyticsDesc')}
+            checked={analytics}
+            onChange={setAnalytics}
+          />
+        </motionless>
+
+        <DialogFooter className="gap-2 sm:gap-2">
+          <button
+            type="button"
+            onClick={() => onOpenChange(false)}
+            className="px-5 py-2.5 text-[10px] font-bold uppercase tracking-[0.2em] text-concrete hover:text-ink transition-colors"
+          >
+            {t('common.cancel')}
+          </button>
+          <button
+            type="button"
+            onClick={handleSave}
+            className="px-6 py-2.5 bg-foreground text-background rounded-xl text-[10px] font-bold uppercase tracking-[0.2em] hover:opacity-90 transition-opacity"
+          >
+            {t('consent.preferences.save')}
+          </button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  )
+}
+
+function CategoryRow({
+  title,
+  description,
+  checked,
+  onChange,
+  locked,
+}: {
+  title: string
+  description: string
+  checked: boolean
+  onChange?: (v: boolean) => void
+  locked?: boolean
+}) {
+  return (
+    <motionless className="flex items-start justify-between gap-4 border-b border-border/40 pb-5 last:border-0 last:pb-0">
+      <div className="space-y-1 pe-4">
+        <p className="text-xs font-bold text-ink">{title}</p>
+        <p className="text-[10px] text-concrete leading-relaxed">{description}</p>
+        {locked && (
+          <p className="text-[9px] font-bold uppercase tracking-widest text-concrete/80">
+            {title.includes('—') ? '' : ''}
+          </p>
+        )}
+      </motionless>
+      <label className={`relative inline-flex shrink-0 items-center ${locked ? 'opacity-50 pointer-events-none' : 'cursor-pointer'}`}>
+        <input
+          type="checkbox"
+          className="sr-only peer"
+          checked={checked}
+          disabled={locked}
+          onChange={(e) => onChange?.(e.target.checked)}
+        />
+        <motionless className="w-11 h-6 bg-gray-200 dark:bg-white/10 rounded-full peer peer-checked:after:translate-x-[20px] after:content-[''] after:absolute after:top-[4px] after:left-[4px] after:bg-white after:rounded-full after:h-4 after:w-4 after:transition-all peer-checked:bg-ink" />
+      </label>
+    </motionless>
+  )
+}
+
+/** Avoid pulling motion into dialog — plain wrapper */
+function motionless({ children, className }: { children: React.ReactNode; className?: string }) {
+  return <motionless className={className}>{children}</motionless>
+}

memento-note/components/note-actions.tsx

@@ -234,7 +234,7 @@ export function NoteActions({
             <DropdownMenuItem onClick={onOpenHistory}>
               <History className="h-4 w-4 mr-2" />
               {historyEnabled
-                ? (t('notes.history') || 'Historique')
+                ? t('notes.history')
                 : (t('notes.enableHistory') || "Activer l'historique")}
             </DropdownMenuItem>
           )}

memento-note/components/note-card.tsx

@@ -351,9 +351,9 @@ export const NoteCard = memo(function NoteCard({
       refreshNotes(note?.notebookId)
 
       if (!note.isPinned) {
-        toast.success(t('notes.pinned') || 'Note pinned')
+        toast.success(t('notes.pinned'))
       } else {
-        toast.info(t('notes.unpinned') || 'Note unpinned')
+        toast.info(t('notes.unpinned'))
       }
     })
   }
@@ -483,8 +483,8 @@ export const NoteCard = memo(function NoteCard({
       {/* Drag Handle - Only visible on mobile/touch devices */}
       <div
         className="muuri-drag-handle absolute top-2 start-2 z-20 cursor-grab active:cursor-grabbing p-2 md:hidden"
-        aria-label={t('notes.dragToReorder') || 'Drag to reorder'}
-        title={t('notes.dragToReorder') || 'Drag to reorder'}
+        aria-label={t('notes.dragToReorder')}
+        title={t('notes.dragToReorder')}
       >
         <GripVertical className="h-5 w-5 text-muted-foreground" />
       </div>
@@ -563,7 +563,7 @@ export const NoteCard = memo(function NoteCard({
              <DropdownMenuSeparator />
              <DropdownMenuItem className="text-muted-foreground" onSelect={() => onCreateSubNotebook?.()}>
                <Plus className="h-4 w-4 me-2" />
-               {t('notebook.createSubNotebook') || 'Nouveau sous-carnet…'}
+               {t('notebook.createSubNotebook')}
              </DropdownMenuItem>
           </DropdownMenuContent>
         </DropdownMenu>
@@ -605,7 +605,7 @@ export const NoteCard = memo(function NoteCard({
           <button
             onClick={handleRemoveFusedBadge}
             className="ms-1 opacity-0 group-hover/badge:opacity-100 hover:opacity-100 transition-opacity"
-            title={t('notes.remove') || 'Remove'}
+            title={t('notes.remove')}
           >
             <Trash2 className="h-2.5 w-2.5" />
           </button>
@@ -873,13 +873,13 @@ export const NoteCard = memo(function NoteCard({
           <AlertDialogHeader>
             <AlertDialogTitle>{t('notes.confirmDeleteTitle') || t('notes.delete')}</AlertDialogTitle>
             <AlertDialogDescription>
-              {t('notes.confirmDelete') || 'Are you sure you want to delete this note?'}
+              {t('notes.confirmDelete')}
             </AlertDialogDescription>
           </AlertDialogHeader>
           <AlertDialogFooter>
-            <AlertDialogCancel>{t('common.cancel') || 'Cancel'}</AlertDialogCancel>
+            <AlertDialogCancel>{t('common.cancel')}</AlertDialogCancel>
             <AlertDialogAction variant="destructive" onClick={handleDelete}>
-              {t('notes.delete') || 'Delete'}
+              {t('notes.delete')}
             </AlertDialogAction>
           </AlertDialogFooter>
         </AlertDialogContent>

memento-note/components/note-history-modal.tsx

@@ -48,6 +48,7 @@ function fmtDate(date: Date | string, language: string): string {
 }
 
 function VersionPreview({ entry, language }: { entry: NoteHistoryEntry; language: string }) {
+  const { t } = useLanguage()
   const isMd = entry.type === 'markdown' || entry.isMarkdown
   const isCl = entry.type === 'checklist'
   const isRt = entry.type === 'richtext'
@@ -56,15 +57,15 @@ function VersionPreview({ entry, language }: { entry: NoteHistoryEntry; language
     <div className="space-y-4">
       <div>
         <p className="text-[11px] font-semibold uppercase tracking-wider text-muted-foreground mb-1">
-          {language === 'fr' ? 'Titre' : 'Title'}
+          {t('noteHistory.title')}
         </p>
         <p className="text-sm text-foreground font-medium">
-          {entry.title || (language === 'fr' ? 'Sans titre' : 'Untitled')}
+          {entry.title || t('noteHistory.untitled')}
         </p>
       </div>
       <div>
         <p className="text-[11px] font-semibold uppercase tracking-wider text-muted-foreground mb-1">
-          {language === 'fr' ? 'Contenu' : 'Content'}
+          {t('noteHistory.content')}
         </p>
         <div className="rounded-md border border-border/70 bg-muted/30 p-3 text-sm text-foreground overflow-auto max-h-[48vh]">
           {isCl && entry.checkItems ? (

memento-note/components/settings/billing-plans.tsx

@@ -222,7 +222,7 @@ export function BillingPlans() {
       buttonClass: effectiveTier === 'ENTERPRISE'
         ? 'bg-paper text-concrete cursor-default'
         : 'bg-ink text-white shadow-xl shadow-ink/20 hover:scale-[1.02] active:scale-95',
-      onClick: () => { window.location.href = 'mailto:sales@momento.app'; },
+      onClick: () => { window.location.href = 'mailto:sales@memento-note.com'; },
     },
   ];
 

memento-note/components/sidebar.tsx

@@ -298,21 +298,21 @@ function SidebarCarnetItem({
               <button
                 onClick={(e) => { e.stopPropagation(); onAddSubNotebook() }}
                 className="p-1 hover:bg-ink/10 rounded-md transition-all text-concrete hover:text-ink"
-                title={t('notebook.createSubNotebook') || 'Add sub-carnet'}
+                title={t('notebook.createSubNotebook')}
               >
                 <Plus size={10} />
               </button>
               <button
                 onClick={(e) => { e.stopPropagation(); onRename() }}
                 className="p-1 hover:bg-ink/10 rounded-md transition-all text-concrete hover:text-ink"
-                title={t('notebook.rename') || 'Rename'}
+                title={t('notebook.rename')}
               >
                 <Pencil size={10} />
               </button>
               <button
                 onClick={(e) => { e.stopPropagation(); onDelete() }}
                 className="p-1 hover:bg-rose-50 rounded-md transition-all text-concrete hover:text-rose-500"
-                title={t('notebook.delete') || 'Delete'}
+                title={t('notebook.delete')}
               >
                 <Trash2 size={10} />
               </button>
@@ -399,7 +399,7 @@ function SidebarCarnetItem({
                 ))}
                 {isActive && notes.length === 0 && !hasChildren && (
                   <p className="ps-8 py-2 text-[10px] italic text-muted-foreground/40 font-light">
-                    {t('common.noResults') || 'No notes found'}
+                    {t('common.noResults')}
                   </p>
                 )}
               </div>
@@ -583,7 +583,7 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
     try {
       await moveNotebookToParent(dragId, targetId)
     } catch (err) {
-      toast.error(err instanceof Error ? err.message : t('sidebar.moveFailed') || 'Failed to move notebook')
+      toast.error(err instanceof Error ? err.message : t('sidebar.moveFailed'))
       setOrderedNotebooks(sortedNotebooks)
     }
   }
@@ -602,7 +602,7 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
     try {
       await moveNotebookToParent(dragId, null)
     } catch (err) {
-      toast.error(err instanceof Error ? err.message : t('sidebar.moveFailed') || 'Failed to move notebook')
+      toast.error(err instanceof Error ? err.message : t('sidebar.moveFailed'))
       setOrderedNotebooks(sortedNotebooks)
     }
   }
@@ -835,14 +835,14 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
                 <DropdownMenuItem asChild>
                   <Link href="/settings/profile" className="flex items-center gap-2 cursor-pointer">
                     <User className="h-4 w-4" />
-                    {t('sidebar.profile') || 'Profil'}
+                    {t('sidebar.profile')}
                   </Link>
                 </DropdownMenuItem>
                 {(user as { role?: string } | undefined)?.role === 'ADMIN' && (
                   <DropdownMenuItem asChild>
                     <a href="/admin" className="flex items-center gap-2 cursor-pointer">
                       <Shield className="h-4 w-4" />
-                      {t('nav.adminDashboard') || 'Administration'}
+                      {t('nav.adminDashboard')}
                     </a>
                   </DropdownMenuItem>
                 )}
@@ -852,7 +852,7 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
                   onClick={() => signOut({ callbackUrl: '/login' })}
                 >
                   <LogOut className="h-4 w-4 me-2" />
-                  {t('sidebar.signOut') || 'Se déconnecter'}
+                  {t('sidebar.signOut')}
                 </DropdownMenuItem>
               </DropdownMenuContent>
             </DropdownMenu>
@@ -873,7 +873,7 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
               <button
                 onClick={() => { router.push('/home') }}
                 className="p-1.5 text-muted-ink hover:text-ink transition-all hover:bg-white/50 dark:hover:bg-white/10 rounded-lg border border-transparent hover:border-border"
-                title={t('nav.home') || 'Accueil'}
+                title={t('nav.home')}
               >
                 <Home size={14} />
               </button>
@@ -1016,7 +1016,7 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
                     <div
                       className="h-10 rounded-lg border-2 border-dashed border-brand-accent/20 flex items-center justify-center text-[11px] text-brand-accent/50"
                     >
-                      {t('sidebar.dropToRoot') || 'Drop here to move to root'}
+                      {t('sidebar.dropToRoot')}
                     </div>
                   )}
                 </div>
@@ -1034,7 +1034,7 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
                 </p>
                 <div className="px-4 py-8 text-center border border-dashed border-border rounded-2xl bg-paper/30">
                   <Clock size={24} className="mx-auto text-concrete/40 mb-3" />
-                  <p className="text-[11px] text-concrete italic">{t('sidebar.noReminders') || 'No active reminders.'}</p>
+                  <p className="text-[11px] text-concrete italic">{t('sidebar.noReminders')}</p>
                 </div>
               </motion.div>
             ) : activeView === 'agents' ? (
@@ -1118,7 +1118,7 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
               )}
             >
               <Users size={14} className={searchParams.get('shared') === '1' && pathname === '/home' ? 'text-accent' : 'text-muted-ink group-hover:text-ink'} />
-              <span>{t('sidebar.sharedWithMe') || 'Shared'}</span>
+              <span>{t('sidebar.sharedWithMe')}</span>
             </Link>
 
             <Link
@@ -1175,7 +1175,7 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
               onClick={(e) => e.stopPropagation()}
             >
               <h3 className="text-sm font-semibold mb-4 font-memento-serif">
-                {t('notebook.rename') || 'Rename notebook'}
+                {t('notebook.rename')}
               </h3>
               <input
                 autoFocus
@@ -1183,7 +1183,7 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
                 onChange={(e) => setRenameValue(e.target.value)}
                 onKeyDown={(e) => { if (e.key === 'Enter') handleConfirmRename(); if (e.key === 'Escape') setRenamingNotebook(null) }}
                 className="w-full px-3 py-2 text-sm border border-border rounded-lg bg-transparent focus:outline-none focus:ring-2 focus:ring-foreground/20"
-                placeholder={t('notebook.namePlaceholder') || 'Notebook name'}
+                placeholder={t('notebook.namePlaceholder')}
               />
               <div className="flex justify-end gap-2 mt-4">
                 <button
@@ -1191,14 +1191,14 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
                   disabled={isRenaming}
                   className="px-4 py-1.5 text-xs font-medium text-muted-foreground hover:text-foreground transition-colors rounded-lg"
                 >
-                  {t('common.cancel') || 'Cancel'}
+                  {t('common.cancel')}
                 </button>
                 <button
                   onClick={handleConfirmRename}
                   disabled={isRenaming || !renameValue.trim()}
                   className="px-4 py-1.5 text-xs font-medium bg-foreground text-background rounded-lg hover:opacity-90 transition-opacity disabled:opacity-50"
                 >
-                  {isRenaming ? '...' : (t('common.confirm') || 'Rename')}
+                  {isRenaming ? '...' : t('notebook.confirmRename')}
                 </button>
               </div>
             </motion.div>
@@ -1228,7 +1228,7 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
                 <Trash2 size={16} className="text-red-500" />
               </div>
               <h3 className="text-sm font-semibold mb-1 font-memento-serif">
-                {t('notebook.trashTitle') || 'Move to trash'}
+                {t('notebook.trashTitle')}
               </h3>
               <p className="text-xs text-muted-foreground mb-4">
                 {t('notebook.trashConfirm', { name: deletingNotebook.name }) || `Move "${deletingNotebook.name}" to trash? You can restore it within 30 days.`}
@@ -1244,14 +1244,14 @@ export function Sidebar({ className, user }: { className?: string; user?: any })
                   disabled={isDeleting}
                   className="px-4 py-1.5 text-xs font-medium text-muted-foreground hover:text-foreground transition-colors rounded-lg"
                 >
-                  {t('common.cancel') || 'Cancel'}
+                  {t('common.cancel')}
                 </button>
                 <button
                   onClick={handleConfirmDelete}
                   disabled={isDeleting}
                   className="px-4 py-1.5 text-xs font-medium bg-red-500 text-white rounded-lg hover:bg-red-600 transition-colors disabled:opacity-50"
                 >
-                  {isDeleting ? '...' : (t('notebook.moveToTrash') || 'Move to trash')}
+                  {isDeleting ? '...' : t('notebook.moveToTrash')}
                 </button>
               </div>
             </motion.div>

memento-note/components/usage-meter.tsx

@@ -188,7 +188,7 @@ export function UsageMeter({ className }: UsageMeterProps) {
                       onClick={(e) => { e.stopPropagation(); router.push('/settings/billing'); }}
                       className="w-full mt-2 py-2 bg-brand-accent/10 hover:bg-brand-accent text-brand-accent hover:text-white text-[9px] font-bold uppercase tracking-widest rounded-xl transition-all duration-300 border border-brand-accent/20"
                     >
-                      {t('usageMeter.upgradePricing') || 'Passer à Pro'}
+                      {t('usageMeter.upgradePricing')}
                     </button>
                   )}
                 </div>