- Create /admin/clients/[id]/page.tsx — Server Component using Radix Tabs (Fasi & Task, Pagamenti, Documenti, Commenti)
- Create PhasesTab: phases list with add-phase form, task lists with add-task form, status selects for phases and tasks
- Create PaymentsTab: accepted_total editor (splits to 50% on each payment), payment status selects with paid_at on saldato
- Create DocumentsTab: add document (label + URL) form, document list with delete action
- Create CommentsTab: chronological comment display (admin vs cliente style), admin reply form with entity selector
- All mutations via inline Server Action closures bound to action= props; revalidatePath ensures fresh data
Simone Cavalli