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/app/(main)/home/page.tsx

@@ -1,16 +1,29 @@
+import { cookies } from 'next/headers'
 import { getAllNotes } from '@/app/actions/notes'
 import { getAISettings } from '@/app/actions/ai-settings'
 import { HomeClient } from '@/components/home-client'
+import {
+  NOTES_LAYOUT_COOKIE,
+  NOTES_VIEW_TYPE_COOKIE,
+  parseNotesLayoutMode,
+  parseNotesViewType,
+} from '@/lib/notes-view-preference'
 
 export default async function HomePage() {
-  const [allNotes, settings] = await Promise.all([
+  const [allNotes, settings, cookieStore] = await Promise.all([
     getAllNotes(),
     getAISettings(),
+    cookies(),
   ])
 
+  const initialLayoutMode = parseNotesLayoutMode(cookieStore.get(NOTES_LAYOUT_COOKIE)?.value)
+  const initialViewType = parseNotesViewType(cookieStore.get(NOTES_VIEW_TYPE_COOKIE)?.value)
+
   return (
     <HomeClient
       initialNotes={allNotes}
+      initialLayoutMode={initialLayoutMode}
+      initialViewType={initialViewType}
       initialSettings={{
         showRecentNotes: settings?.showRecentNotes !== false,
         noteHistory: settings?.noteHistory === true,