fix: organize-notebook orphelin (sed console.log) + migration DB indexes

- organize-notebook.ts: lignes orphelines supprimées (console.log multi-ligne cassé par sed)
- Migration 20260629000000: CREATE INDEX contentUpdatedAt DESC + isPublic sur Note
- schema.prisma: commentaire SQL brut retiré (invalidait prisma)

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