feat(notes): liens internes, onglet Réseau, living blocks et consentement IA

Rend les liens entre notes visibles et persistants (sync NoteLink au save, auto-save, graphe réseau rafraîchi), ajoute living blocks, Memory Echo, recherche globale, consentement IA explicite et consolide les prototypes design en architectural-grid.

Co-authored-by: Cursor <cursoragent@cursor.com>

memento-note/components/note-editor/note-content-area.tsx

@@ -14,7 +14,7 @@ import { useLanguage } from '@/lib/i18n'
 import { cn } from '@/lib/utils'
 
 export function NoteContentArea() {
-  const { state, actions, readOnly, fullPage, textareaRef } = useNoteEditorContext()
+  const { state, actions, readOnly, fullPage, textareaRef, note, richTextEditorRef } = useNoteEditorContext()
   const { t } = useLanguage()
 
   const uploadImageFile = async (file: File) => {
@@ -101,10 +101,12 @@ export function NoteContentArea() {
     return (
       <div className="fullpage-editor">
         <RichTextEditor
+          ref={richTextEditorRef}
           content={state.content}
           onChange={(v: string) => actions.setContent(v)}
           className="min-h-[280px]"
           onImageUpload={uploadImageFile}
+          noteId={note.id}
         />
       </div>
     )
@@ -113,10 +115,12 @@ export function NoteContentArea() {
   return (
     <div className="space-y-2">
       <RichTextEditor
+        ref={richTextEditorRef}
         content={state.content}
         onChange={actions.setContent}
         className="min-h-[200px]"
         onImageUpload={uploadImageFile}
+        noteId={note.id}
       />
       <GhostTags
         suggestions={state.filteredSuggestions}