feat: brainstorm sessions, PDF document Q&A, embedding fixes, and UI improvements

- Add brainstorm feature with collaborative canvas, AI idea generation, live cursors, playback, and export
- Add PDF upload/extraction/ingestion pipeline with pgvector document search (RAG)
- Add document Q&A overlay with streaming chat and PDF preview
- Add note attachments UI with status polling, grid layout, and auto-scroll
- Add task extraction AI tool and agent executor improvements
- Fix NoteEmbedding missing updatedAt column, re-index 66 notes with 1536-dim embeddings
- Fix brainstorm 'Create Note' button: add success toast and redirect to created note
- Fix memory echo notification infinite polling
- Fix chat route to always include document_search tool
- Add brainstorm i18n keys across all 14 locales
- Add socket server for real-time brainstorm collaboration
- Add hierarchical notebook selector and organize notebook dialog improvements
- Add sidebar brainstorm section with session management
- Update prisma schema with brainstorm tables, attachments, and document chunks

memento-note/components/note-inline-editor.tsx

@@ -561,7 +561,7 @@ export function NoteInlineEditor({
             <Button variant="ghost" size="sm"
               className={cn('h-8 gap-1.5 px-2 text-xs font-medium transition-colors', aiOpen && 'bg-primary/10 text-primary')}
               onClick={() => setAiOpen(!aiOpen)}
-              title="IA Note">
+              title={t('ai.aiNoteTitle')}>
               {isProcessingAI
                 ? <Loader2 className="h-3.5 w-3.5 animate-spin" />
                 : <Sparkles className="h-3.5 w-3.5" />}
@@ -601,7 +601,7 @@ export function NoteInlineEditor({
               <GitCommitHorizontal className="h-3.5 w-3.5" />
             </Button>
           )}
-          <span className="mr-1 flex items-center gap-1 text-[11px] text-muted-foreground/50 select-none">
+          <span className="me-1 flex items-center gap-1 text-[11px] text-muted-foreground/50 select-none">
             {isSaving ? (
               <><Loader2 className="h-3 w-3 animate-spin" /> {t('notes.saving')}</>
             ) : isDirty ? (
@@ -624,7 +624,7 @@ export function NoteInlineEditor({
                       })
                   }}
                 >
-                  <span className="h-1.5 w-1.5 rounded-full bg-amber-400 mr-1.5" />
+                  <span className="h-1.5 w-1.5 rounded-full bg-amber-400 me-1.5" />
                   {t('notes.saveNow') || 'Enregistrer'}
                 </Button>
               ) : (
@@ -664,8 +664,8 @@ export function NoteInlineEditor({
             <DropdownMenuContent align="end">
               <DropdownMenuItem onClick={handleToggleArchive}>
                 {note.isArchived
-                  ? <><ArchiveRestore className="h-4 w-4 mr-2" />{t('notes.unarchive')}</>
-                  : <><Archive className="h-4 w-4 mr-2" />{t('notes.archive')}</>}
+                  ? <><ArchiveRestore className="h-4 w-4 me-2" />{t('notes.unarchive')}</>
+                  : <><Archive className="h-4 w-4 me-2" />{t('notes.archive')}</>}
               </DropdownMenuItem>
               {onOpenHistory && (
                 <DropdownMenuItem
@@ -677,7 +677,7 @@ export function NoteInlineEditor({
                     }
                   }}
                 >
-                  <History className="h-4 w-4 mr-2" />
+                  <History className="h-4 w-4 me-2" />
                   {note.historyEnabled
                     ? (t('notes.history') || 'Historique')
                     : (t('notes.enableHistory') || "Activer l'historique")}
@@ -685,7 +685,7 @@ export function NoteInlineEditor({
               )}
               <DropdownMenuSeparator />
               <DropdownMenuItem className="text-red-600 dark:text-red-400" onClick={handleDelete}>
-                <Trash2 className="h-4 w-4 mr-2" />{t('notes.delete')}
+                <Trash2 className="h-4 w-4 me-2" />{t('notes.delete')}
               </DropdownMenuItem>
             </DropdownMenuContent>
           </DropdownMenu>
@@ -813,7 +813,7 @@ export function NoteInlineEditor({
                   </a>
                 </div>
                 <button type="button"
-                  className="absolute right-2 top-2 rounded-full bg-background/80 p-1 opacity-0 transition-opacity group-hover:opacity-100 hover:bg-destructive/10"
+                  className="absolute end-2 top-2 rounded-full bg-background/80 p-1 opacity-0 transition-opacity group-hover:opacity-100 hover:bg-destructive/10"
                   onClick={() => handleRemoveLink(idx)}
                 >
                   <X className="h-3 w-3" />