feat(#37): módulo de cartão de crédito com faturas mensais

- Migration 011: closing_day/due_day em accounts + tabela credit_bills
- CreditBillService: cria/atualiza fatura corrente on-demand no GET /accounts
- Widget FATURA ATUAL no dashboard com total e botão PAGAR
- AccountsView: campos closing_day/due_day para contas credit + painel fatura
- Dashboard: current_bills lista faturas não pagas de todos os cartões

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

apps/api/internal/service/dashboard.go

@@ -21,10 +21,11 @@ type DashboardService struct {
 	repo       DashboardRepo
 	recurrSvc  *RecurringService
 	patrimony  PatrimonySource
+	billSvc    *CreditBillService
 }
 
-func NewDashboardService(repo DashboardRepo, recurrSvc *RecurringService, patrimony PatrimonySource) *DashboardService {
-	return &DashboardService{repo: repo, recurrSvc: recurrSvc, patrimony: patrimony}
+func NewDashboardService(repo DashboardRepo, recurrSvc *RecurringService, patrimony PatrimonySource, billSvc *CreditBillService) *DashboardService {
+	return &DashboardService{repo: repo, recurrSvc: recurrSvc, patrimony: patrimony, billSvc: billSvc}
 }
 
 func (s *DashboardService) Get(ctx context.Context, month string) (*model.DashboardData, error) {
@@ -95,6 +96,11 @@ func (s *DashboardService) Get(ctx context.Context, month string) (*model.Dashbo
 		return nil, err
 	}
 
+	currentBills, _ := s.billSvc.currentBillsForDashboard(ctx)
+	if currentBills == nil {
+		currentBills = []model.CreditBill{}
+	}
+
 	return &model.DashboardData{
 		Month:                   month,
 		TotalIncome:             income,
@@ -106,5 +112,6 @@ func (s *DashboardService) Get(ctx context.Context, month string) (*model.Dashbo
 		RecentTransactions:      recent,
 		PendingRecurring:        pending,
 		PendingIncomeRecurrings: pendingIncome,
+		CurrentBills:            currentBills,
 	}, nil
 }