diff --git a/memento-note/app/actions/organize-notebook.ts b/memento-note/app/actions/organize-notebook.ts
index 816bc58..6ccd3d5 100644
--- a/memento-note/app/actions/organize-notebook.ts
+++ b/memento-note/app/actions/organize-notebook.ts
@@ -205,10 +205,6 @@ export async function executeNotebookOrganization(plan: OrganizationPlan): Promi
     })
     if (!notebook) return { success: false, created: 0, moved: 0, error: 'Carnet introuvable' }
 
-      notebookId: plan.notebookId,
-      groups: plan.groups.map(g => ({ name: g.name, isNew: g.isNew, existingId: g.existingId, noteCount: g.notes.length }))
-    }))
-
     let created = 0
     let moved = 0
 
diff --git a/memento-note/prisma/migrations/20260629000000_add_note_indexes/migration.sql b/memento-note/prisma/migrations/20260629000000_add_note_indexes/migration.sql
new file mode 100644
index 0000000..d912ed7
--- /dev/null
+++ b/memento-note/prisma/migrations/20260629000000_add_note_indexes/migration.sql
@@ -0,0 +1,3 @@
+-- Add indexes for performance
+CREATE INDEX IF NOT EXISTS "Note_contentUpdatedAt_idx" ON "Note" ("contentUpdatedAt" DESC);
+CREATE INDEX IF NOT EXISTS "Note_isPublic_idx" ON "Note" ("isPublic");
diff --git a/memento-note/prisma/schema.prisma b/memento-note/prisma/schema.prisma
index faf363d..866c655 100644
--- a/memento-note/prisma/schema.prisma
+++ b/memento-note/prisma/schema.prisma
@@ -749,10 +749,6 @@ model DocumentChunk {
   @@index([attachmentId, chunkIndex])
 }
 
--- Index vectoriel pour recherche sémantique sur DocumentChunk (HNSW)
--- CREATE INDEX IF NOT EXISTS document_chunk_embedding_hnsw_idx
--- ON "DocumentChunk" USING hnsw ("embedding" vector_cosine_ops);
-
 // ===== BYOK (Story 3.5) =====
 
 model UserAPIKey {