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/actions/notes-sharing.ts

@@ -255,7 +255,7 @@ export async function getPendingShareCount() {
   }
 }
 
-export async function leaveSharedNote(noteId: string) {
+export async function leaveSharedNote(noteId: string, options?: { skipRevalidation?: boolean }) {
   const session = await auth()
   if (!session?.user?.id) throw new Error('Unauthorized')
 
@@ -268,7 +268,9 @@ export async function leaveSharedNote(noteId: string) {
 
     await prisma.noteShare.update({ where: { id: share.id }, data: { status: 'removed' } })
 
-    revalidatePath('/home')
+    if (!options?.skipRevalidation) {
+      revalidatePath('/home')
+    }
     return { success: true }
   } catch (error: unknown) {
     console.error('Error leaving shared note:', error)