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/api/notes/[id]/route.ts

@@ -9,6 +9,7 @@ import {
   shouldCaptureHistorySnapshot,
   shouldCreateAutoSnapshot,
 } from '@/lib/note-history'
+import { syncNoteLinksForNote } from '@/lib/notes/sync-note-links'
 
 // GET /api/notes/[id] - Get a single note
 export async function GET(
@@ -167,9 +168,11 @@ export async function PUT(
       console.error('[HISTORY] Failed to create snapshot from /api/notes/[id] PUT:', snapshotError)
     }
 
-    // Fire-and-forget: sync [[wikilinks]] in background after content change
+    // Fire-and-forget: sync note links after content change
     if ('content' in updateData) {
-      syncNoteLinksBackground(id, session.user.id, note.content).catch(() => {})
+      syncNoteLinksForNote(id, session.user.id, note.content).catch(err => {
+        console.error('[NoteLink] sync failed after PUT:', err)
+      })
     }
 
     return NextResponse.json({
@@ -185,56 +188,6 @@ export async function PUT(
   }
 }
 
-/** Background job: parse [[wikilinks]] and sync NoteLink table */
-async function syncNoteLinksBackground(noteId: string, userId: string, content: string) {
-  const WIKILINK_RE = /\[\[([^\]|#]+?)(?:[|#][^\]]+)?\]\]/g
-  const plain = content.replace(/<[^>]+>/g, ' ')
-  const wikilinks: { title: string; snippet: string }[] = []
-  const seen = new Set<string>()
-  let match: RegExpExecArray | null
-
-  WIKILINK_RE.lastIndex = 0
-  while ((match = WIKILINK_RE.exec(plain)) !== null) {
-    const title = match[1].trim()
-    if (!title || seen.has(title.toLowerCase())) continue
-    seen.add(title.toLowerCase())
-    const start = Math.max(0, match.index - 50)
-    const end = Math.min(plain.length, match.index + match[0].length + 50)
-    const snippet = plain.slice(start, end).replace(/\s+/g, ' ').trim()
-    wikilinks.push({ title, snippet })
-  }
-
-  const upsertedIds: string[] = []
-
-  for (const { title, snippet } of wikilinks) {
-    let targetNote = await prisma.note.findFirst({
-      where: { userId, title: { equals: title, mode: 'insensitive' }, trashedAt: null },
-      select: { id: true },
-    })
-    if (!targetNote) {
-      targetNote = await prisma.note.create({
-        data: { title, content: '', userId, type: 'richtext', color: 'default', isMarkdown: true, order: 0 },
-        select: { id: true },
-      })
-    }
-    if (targetNote.id === noteId) continue
-    await (prisma as any).noteLink.upsert({
-      where: { sourceNoteId_targetNoteId: { sourceNoteId: noteId, targetNoteId: targetNote.id } },
-      update: { contextSnippet: snippet.slice(0, 200) },
-      create: { id: crypto.randomUUID(), sourceNoteId: noteId, targetNoteId: targetNote.id, contextSnippet: snippet.slice(0, 200) },
-    })
-    upsertedIds.push(targetNote.id)
-  }
-
-  if (upsertedIds.length > 0) {
-    await (prisma as any).noteLink.deleteMany({
-      where: { sourceNoteId: noteId, targetNoteId: { notIn: upsertedIds } },
-    })
-  } else {
-    await (prisma as any).noteLink.deleteMany({ where: { sourceNoteId: noteId } })
-  }
-}
-
 // DELETE /api/notes/[id] - Delete a note
 export async function DELETE(
   request: NextRequest,