Add per-account-type splitEnabled flag from the catalog

When the master marks an account type splitEnabled=false, big days trade
as one unsplit leg (the legacy one-and-done behavior); min-day bumps are
unaffected. Missing field — older master or pre-toggle cached catalog —
defaults to enabled.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/api/firms/route.ts

@@ -36,6 +36,7 @@ export async function GET() {
                     maxLoss: a.maxLoss,
                     maxPositionSize: a.maxPositionSize,
                     targetSameEquity: a.targetSameEquity,
+                    splitEnabled: a.splitEnabled,
                     withdrawalStages: a.withdrawalStages,
                 })),
                 catalogUpdatedAt: firm.updatedAt,

app/api/state/route.ts

@@ -69,7 +69,8 @@ export async function GET() {
                     const equityProfit = cash.amount - cfg.accountSize;
                     const plan = computeDayPlan(
                         acc.id, tradeDate, effective.profitTarget, effective.consistency,
-                        dailyPnL, cfg.minDayPnL, effective.minTradingDays, equityProfit, cash.realizedPnL
+                        dailyPnL, cfg.minDayPnL, effective.minTradingDays, equityProfit, cash.realizedPnL,
+                        cfg.splitEnabled
                     );
                     dailyTarget = plan ? { amount: plan.dayTarget, path: plan.path } : null;
                     remainingToday = plan?.remainingToday ?? null;