fix: Outline se met à jour en temps réel quand les titres changent

Ajout d'un listener editor.on('update') dans OutlineView.
Avant: le sommaire était figé au moment de l'insertion.
Maintenant: il se recalcule à chaque ajout/modif/suppression de titre.

memento-note/components/tiptap-outline-extension.tsx

@@ -1,5 +1,6 @@
 'use client'
 
+import { useState, useEffect, useRef } from 'react'
 import { Node, mergeAttributes } from '@tiptap/core'
 import { ReactNodeViewRenderer, NodeViewWrapper } from '@tiptap/react'
 import { List, X } from 'lucide-react'
@@ -37,7 +38,14 @@ function collectHeadings(editor: Editor): HeadingEntry[] {
 
 const OutlineView = ({ editor, deleteNode }: any) => {
   const { t } = useLanguage()
-  const headings = collectHeadings(editor as Editor)
+  const [headings, setHeadings] = useState<HeadingEntry[]>(() => collectHeadings(editor as Editor))
+
+  // Re-collect headings when the editor content changes
+  useEffect(() => {
+    const update = () => setHeadings(collectHeadings(editor as Editor))
+    editor.on('update', update)
+    return () => { editor.off('update', update) }
+  }, [editor])
 
   const scrollToHeading = (pos: number) => {
     const docSize = editor.state.doc.content.size