feat: payments plans, phase auto-cascade, transcripts, manual timer

- Pagamenti: totale ereditato dalla somma accepted_total delle offerte
  attive (con override) + selettore schema rate 1/2/3 step; nuova colonna
  payments.percent per rescalare gli importi preservando label/stato
- Fasi & Task: recomputePhaseStatus auto-cascade (task -> fase) su
  updateTaskStatus/addTask, fix UI stale, etichette Da iniziare/In corso/Completata
- Pagina pubblica: colori fasi (grigio/blu/#1A463C) + fasi collassabili
- Transcript del cliente visibili in tab Documenti admin e dashboard pubblica
- Timer: inserimento manuale (+30/+60, minuti liberi, data) + elimina entry
- CLAUDE.md: procedura Deploy & DB Access; push su main automatico

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/admin/projects/project-actions.ts

@@ -65,6 +65,7 @@ export async function updateProjectAcceptedTotal(projectId: string, acceptedTota
 }
 
 // Creates Acconto 50% + Saldo 50% stubs for a project that has no payments yet.
+// Kept for backward compatibility; prefer setPaymentPlan for new code.
 export async function initProjectPayments(projectId: string): Promise<void> {
   await requireAdmin();
   const rows = await db
@@ -74,11 +75,50 @@ export async function initProjectPayments(projectId: string): Promise<void> {
     .limit(1);
   if (!rows[0]) throw new Error("Progetto non trovato");
   const total = parseFloat(rows[0].accepted_total ?? "0");
-  const half = (total / 2).toFixed(2);
-  await db.insert(payments).values([
-    { project_id: projectId, label: "Acconto 50%", amount: half, status: "da_saldare" },
-    { project_id: projectId, label: "Saldo 50%", amount: half, status: "da_saldare" },
-  ]);
+  await setPaymentPlan(projectId, "two", total);
+}
+
+// Replaces all payments for a project with a fresh plan at a given total.
+// Modes:
+//   single → 1 row 100%  "Pagamento unico (100%)"
+//   two    → 2 rows 50%/50%  "Acconto 50% (inizio lavori)" / "Saldo 50% (alla consegna)"
+//   three  → 3 rows 50%/30%/20%
+export async function setPaymentPlan(
+  projectId: string,
+  mode: "single" | "two" | "three",
+  total: number
+): Promise<void> {
+  await requireAdmin();
+
+  type PaymentDef = { label: string; percent: number };
+  const plans: Record<string, PaymentDef[]> = {
+    single: [{ label: "Pagamento unico (100%)", percent: 100 }],
+    two: [
+      { label: "Acconto 50% (inizio lavori)", percent: 50 },
+      { label: "Saldo 50% (alla consegna)", percent: 50 },
+    ],
+    three: [
+      { label: "Acconto 50% (inizio lavori)", percent: 50 },
+      { label: "30% (post revisioni)", percent: 30 },
+      { label: "Saldo 20% (alla consegna)", percent: 20 },
+    ],
+  };
+
+  const plan = plans[mode];
+  if (!plan) throw new Error("Modalità pagamento non valida");
+
+  // Delete existing payments for this project, then insert new ones.
+  await db.delete(payments).where(eq(payments.project_id, projectId));
+  await db.insert(payments).values(
+    plan.map((p) => ({
+      project_id: projectId,
+      label: p.label,
+      percent: p.percent.toFixed(2),
+      amount: ((total * p.percent) / 100).toFixed(2),
+      status: "da_saldare" as const,
+    }))
+  );
+
   revalidatePath(`/admin/projects/${projectId}`);
 }