feat: image AI titles (3 suggestions), describe-images action, pin/list fixes, i18n

- Add image description service + API route for AI-powered image analysis
- Image title generation returns 3 selectable suggestions via TitleSuggestions component
- Add "Describe images" action in AI assistant (individual + collective)
- Fix pin refresh propagation in card and tabs view
- Fix note creation refresh in tabs mode, pass all notes to tabs view
- Add RTL support (dir="auto") on note content elements
- Pass UI language dynamically to AI endpoints instead of hardcoded 'fr'
- Add 18 missing i18n keys in both en.json and fr.json
- Sparkles button on images for AI title generation (bottom-right, pulse animation)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

memento-note/components/notes-tabs-view.tsx

@@ -86,6 +86,7 @@ interface NotesTabsViewProps {
   noteHistoryMode?: 'manual' | 'auto'
   onOpenHistory?: (note: Note) => void
   onEnableHistory?: (noteId: string) => Promise<void>
+  onNoteCreated?: (note: Note) => void
 }
 
 type SortOrder = 'date-desc' | 'date-asc' | 'title-asc' | 'title-desc'
@@ -256,6 +257,7 @@ function SortableNoteListItem({
 
         {/* Row 2: title */}
         <p
+          dir="auto"
           className={cn(
             'mb-1.5 text-[13.5px] leading-snug transition-colors',
             selected
@@ -268,7 +270,7 @@ function SortableNoteListItem({
 
         {/* Row 3: snippet */}
         {snippet && (
-          <p className="line-clamp-2 text-[12px] leading-relaxed text-muted-foreground/60">
+          <p dir="auto" className="line-clamp-2 text-[12px] leading-relaxed text-muted-foreground/60">
             {snippet}
           </p>
         )}
@@ -560,7 +562,6 @@ function NoteMetaSidebar({
             icon={note.isPinned ? <PinOff className="h-3.5 w-3.5" /> : <Pin className="h-3.5 w-3.5" />}
             label={note.isPinned ? t('notes.unpin') : t('notes.pin')}
             onClick={() => onPinToggle(note)}
-            disabled
           />
 
           {/* Archive */}
@@ -593,10 +594,11 @@ export function NotesTabsView({
   notes,
   onEdit,
   currentNotebookId,
-  
+
   noteHistoryMode = 'manual',
   onOpenHistory,
   onEnableHistory,
+  onNoteCreated,
 }: NotesTabsViewProps) {
   const { t, language } = useLanguage()
   const { triggerRefresh } = useNoteRefreshOptional()
@@ -667,21 +669,18 @@ export function NotesTabsView({
     return () => window.removeEventListener('label-deleted', handler)
   }, [])
 
-  // Sorted display items (does NOT affect persisted order)
+  // Sorted display items — pinned notes always float to the top
   const sortedItems = useMemo(() => {
-    if (sortOrder === 'date-desc') return [...items]
-    return [...items].sort((a, b) => {
-      if (sortOrder === 'date-asc') {
-        return new Date(a.updatedAt).getTime() - new Date(b.updatedAt).getTime()
-      }
-      if (sortOrder === 'title-asc') {
-        return (a.title || '').localeCompare(b.title || '')
-      }
-      if (sortOrder === 'title-desc') {
-        return (b.title || '').localeCompare(a.title || '')
-      }
+    const pinned = items.filter(n => n.isPinned)
+    const unpinned = items.filter(n => !n.isPinned)
+    const sortFn = (a: Note, b: Note) => {
+      if (sortOrder === 'date-desc') return new Date(b.updatedAt).getTime() - new Date(a.updatedAt).getTime()
+      if (sortOrder === 'date-asc') return new Date(a.updatedAt).getTime() - new Date(b.updatedAt).getTime()
+      if (sortOrder === 'title-asc') return (a.title || '').localeCompare(b.title || '')
+      if (sortOrder === 'title-desc') return (b.title || '').localeCompare(a.title || '')
       return 0
-    })
+    }
+    return [...pinned.sort(sortFn), ...unpinned.sort(sortFn)]
   }, [items, sortOrder])
 
   const sensors = useSensors(
@@ -727,6 +726,7 @@ export function NotesTabsView({
           return [...pinned, newNote, ...unpinned]
         })
         setSelectedId(newNote.id)
+        onNoteCreated?.(newNote)
         triggerRefresh()
       } catch {
         toast.error(t('notes.createFailed') || 'Impossible de créer la note')
@@ -739,6 +739,7 @@ export function NotesTabsView({
     setItems((prev) => prev.map((n) => n.id === note.id ? { ...n, isPinned: next } : n))
     try {
       await updateNote(note.id, { isPinned: next }, { skipRevalidation: true })
+      triggerRefresh()
       toast.success(next ? (t('notes.pinned') || 'Épinglée') : (t('notes.unpinned') || 'Désépinglée'))
     } catch {
       setItems((prev) => prev.map((n) => n.id === note.id ? { ...n, isPinned: note.isPinned } : n))