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/tiptap-unique-id-extension.ts

@@ -0,0 +1,65 @@
+import { Extension } from '@tiptap/core'
+import { Plugin, PluginKey } from '@tiptap/pm/state'
+
+const BLOCK_TYPES = ['paragraph', 'heading', 'blockquote', 'bulletList', 'orderedList', 'taskList', 'codeBlock']
+
+function generateBlockId(): string {
+  if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
+    return crypto.randomUUID()
+  }
+  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
+    const r = (Math.random() * 16) | 0
+    const v = c === 'x' ? r : (r & 0x3) | 0x8
+    return v.toString(16)
+  })
+}
+
+export const UniqueIdExtension = Extension.create({
+  name: 'uniqueId',
+
+  addProseMirrorPlugins() {
+    return [
+      new Plugin({
+        key: new PluginKey('uniqueId'),
+        appendTransaction(transactions, _oldState, newState) {
+          const hasDocChanged = transactions.some(t => t.docChanged)
+          if (!hasDocChanged) return null
+
+          const { tr, doc } = newState
+          let modified = false
+
+          doc.descendants((node, pos) => {
+            if (!BLOCK_TYPES.includes(node.type.name)) return
+            if (node.attrs['data-id']) return
+
+            tr.setNodeMarkup(pos, undefined, {
+              ...node.attrs,
+              'data-id': generateBlockId(),
+            })
+            modified = true
+          })
+
+          return modified ? tr : null
+        },
+      }),
+    ]
+  },
+
+  addGlobalAttributes() {
+    return [
+      {
+        types: BLOCK_TYPES,
+        attributes: {
+          'data-id': {
+            default: null,
+            parseHTML: element => element.getAttribute('data-id'),
+            renderHTML: attributes => {
+              if (!attributes['data-id']) return {}
+              return { 'data-id': attributes['data-id'] }
+            },
+          },
+        },
+      },
+    ]
+  },
+})