feat: Publication de pages — notes publiques sur URL

- Migration: champs isPublic + publicSlug + publishedAt sur Note
- Route publique /p/[slug] — rendu SSR sans auth, prose styled
- Server actions: publishNote / unpublishNote / getPublishedNote
- API /api/notes/publish — toggle publication + génération slug
- PublishDialog — modal avec lien copiable + bouton dépublier
- Bouton Globe dans le toolbar (vert si publiée)
- i18n FR/EN
- Pattern inspiré de BrainstormSession.isPublic

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

@@ -19,10 +19,11 @@ import { Badge } from '@/components/ui/badge'
 import {
   X, Plus, Palette, Image as ImageIcon, Bell, Eye, Link as LinkIcon, Sparkles,
   Maximize2, Copy, ArrowLeft, ChevronRight, PanelRight, Check, Loader2, Save, MoreHorizontal,
-  Trash2, LogOut, Wand2, Share2, Wind, Paperclip, GraduationCap, FileDown, FileUp, Mic, MicOff, Printer, PenTool, Loader2 as Loader2Icon
+  Trash2, LogOut, Wand2, Share2, Wind, Paperclip, GraduationCap, FileDown, FileUp, Mic, MicOff, Printer, PenTool, Loader2 as Loader2Icon, Globe
 } from 'lucide-react'
 import { FlashcardGenerateDialog } from '@/components/flashcards/flashcard-generate-dialog'
 import { NoteShareDialog } from './note-share-dialog'
+import { PublishDialog } from './publish-dialog'
 import { deleteNote, leaveSharedNote } from '@/app/actions/notes'
 import { emitNoteChange } from '@/lib/note-change-sync'
 import { useLanguage } from '@/lib/i18n'
@@ -46,6 +47,7 @@ export function NoteEditorToolbar({ mode, onClose, onToggleAttachments, attachme
   const [isConverting, setIsConverting] = useState(false)
   const [shareOpen, setShareOpen] = useState(false)
   const [flashcardsOpen, setFlashcardsOpen] = useState(false)
+  const [publishOpen, setPublishOpen] = useState(false)
   const notebookName = notebooks.find(nb => nb.id === note.notebookId)?.name || null
 
   const undoSnapshotRef = useRef<{ content: string; isMarkdown: boolean } | null>(null)
@@ -496,6 +498,21 @@ export function NoteEditorToolbar({ mode, onClose, onToggleAttachments, attachme
             </div>
           )}
 
+          {!readOnly && (
+            <button
+              title={t('richTextEditor.publishTitle') || 'Publication publique'}
+              onClick={() => setPublishOpen(true)}
+              className={cn(
+                "p-1.5 rounded-full border transition-all",
+                note.isPublic
+                  ? "border-green-400/40 text-green-600 dark:text-green-400 bg-green-50 dark:bg-green-950/20"
+                  : "border-black/20 dark:border-white/20 text-foreground hover:bg-black/5 dark:hover:bg-white/5"
+              )}
+            >
+              <Globe size={16} />
+            </button>
+          )}
+
           {!readOnly && (
             <button
               title={t('notes.shareNoteTitle')}
@@ -588,6 +605,17 @@ export function NoteEditorToolbar({ mode, onClose, onToggleAttachments, attachme
             }}
           />
 
+          {publishOpen && (
+            <PublishDialog
+              open={publishOpen}
+              onClose={() => setPublishOpen(false)}
+              noteId={note.id}
+              noteTitle={state.title || note.title || 'Untitled'}
+              isPublic={note.isPublic}
+              publicSlug={note.publicSlug ?? null}
+            />
+          )}
+
           <button
             aria-label={t('notes.documentInfoAria')}
             onClick={() => { actions.setInfoOpen(!state.infoOpen); actions.setAiOpen(false) }}