Show stage pill next to profit target on dashboards

State API now returns stage = 1 + number of withdrawals. Both the main
dashboard and the account detail page show a small Stage N pill next to
the profit target value.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/page.tsx

@@ -135,7 +135,12 @@ function AccountRow({ account, firm, hideDead, privacy }: { account: AccountStat
             </td>
             <td className="px-4 py-3 text-slate-600 tabular-nums">
                 <div className="flex flex-col">
-                    <span>${(account.effectiveProfitTarget ?? cfg?.profitTarget ?? 0).toLocaleString(undefined, { maximumFractionDigits: 2 })}</span>
+                    <div className="flex items-center gap-1.5">
+                        <span>${(account.effectiveProfitTarget ?? cfg?.profitTarget ?? 0).toLocaleString(undefined, { maximumFractionDigits: 2 })}</span>
+                        <span className="inline-block px-1.5 py-0.5 rounded text-[10px] font-semibold bg-indigo-100 text-indigo-700">
+                            Stage {account.stage}
+                        </span>
+                    </div>
                     {account.dailyTarget && (
                         <span className="text-xs text-slate-400">${fmt(account.dailyTarget.amount)} today</span>
                     )}