feat: #44 fatura de cartão com data futura fica pendente até confirmação

- Nova tabela pending_bill_imports (migration 016)
- ImportHandler.Confirm: quando is_credit_card=true e payment_date > hoje,
  salva como pending em vez de inserir transações
- Novos endpoints: GET /pending-bills, POST /pending-bills/:id/confirm,
  DELETE /pending-bills/:id
- Dashboard inclui pending_bill_imports no payload
- Frontend: resultado "fatura salva como pendente" no ImportView
- AccountsView exibe widget de faturas pendentes com ações de confirmar/descartar
- dashboard_test: mock de PendingBillRepo + TransactionRepository

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

apps/api/internal/repository/pending_bill.go

@@ -0,0 +1,93 @@
+package repository
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"financeiro-carvalho/internal/middleware"
+	"financeiro-carvalho/internal/model"
+)
+
+type PendingBillRepository interface {
+	List(ctx context.Context) ([]model.PendingBillImport, error)
+	Create(ctx context.Context, filename, paymentDate string, total float64, rows []model.ImportRow) (*model.PendingBillImport, error)
+	GetByID(ctx context.Context, id int) (*model.PendingBillImport, error)
+	Delete(ctx context.Context, id int) error
+}
+
+type pendingBillRepo struct{ pool *pgxpool.Pool }
+
+func NewPendingBillRepository(pool *pgxpool.Pool) PendingBillRepository {
+	return &pendingBillRepo{pool: pool}
+}
+
+func (r *pendingBillRepo) List(ctx context.Context) ([]model.PendingBillImport, error) {
+	pid := middleware.ProfileIDFromCtx(ctx)
+	rows, err := r.pool.Query(ctx, `
+		SELECT id, filename, payment_date::text, total, rows, created_at::text
+		FROM pending_bill_imports
+		WHERE profile_id = $1
+		ORDER BY payment_date
+	`, pid)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var out []model.PendingBillImport
+	for rows.Next() {
+		var p model.PendingBillImport
+		var rowsJSON []byte
+		if err := rows.Scan(&p.ID, &p.Filename, &p.PaymentDate, &p.Total, &rowsJSON, &p.CreatedAt); err != nil {
+			return nil, err
+		}
+		_ = json.Unmarshal(rowsJSON, &p.Rows)
+		out = append(out, p)
+	}
+	return out, rows.Err()
+}
+
+func (r *pendingBillRepo) Create(ctx context.Context, filename, paymentDate string, total float64, rows []model.ImportRow) (*model.PendingBillImport, error) {
+	pid := middleware.ProfileIDFromCtx(ctx)
+	rowsJSON, err := json.Marshal(rows)
+	if err != nil {
+		return nil, err
+	}
+	var p model.PendingBillImport
+	var rowsBack []byte
+	err = r.pool.QueryRow(ctx, `
+		INSERT INTO pending_bill_imports (profile_id, filename, payment_date, total, rows)
+		VALUES ($1, $2, $3, $4, $5)
+		RETURNING id, filename, payment_date::text, total, rows, created_at::text
+	`, pid, filename, paymentDate, total, rowsJSON).
+		Scan(&p.ID, &p.Filename, &p.PaymentDate, &p.Total, &rowsBack, &p.CreatedAt)
+	if err != nil {
+		return nil, err
+	}
+	_ = json.Unmarshal(rowsBack, &p.Rows)
+	return &p, nil
+}
+
+func (r *pendingBillRepo) GetByID(ctx context.Context, id int) (*model.PendingBillImport, error) {
+	pid := middleware.ProfileIDFromCtx(ctx)
+	var p model.PendingBillImport
+	var rowsJSON []byte
+	err := r.pool.QueryRow(ctx, `
+		SELECT id, filename, payment_date::text, total, rows, created_at::text
+		FROM pending_bill_imports
+		WHERE id = $1 AND profile_id = $2
+	`, id, pid).Scan(&p.ID, &p.Filename, &p.PaymentDate, &p.Total, &rowsJSON, &p.CreatedAt)
+	if err != nil {
+		return nil, err
+	}
+	_ = json.Unmarshal(rowsJSON, &p.Rows)
+	return &p, nil
+}
+
+func (r *pendingBillRepo) Delete(ctx context.Context, id int) error {
+	pid := middleware.ProfileIDFromCtx(ctx)
+	_, err := r.pool.Exec(ctx, `DELETE FROM pending_bill_imports WHERE id = $1 AND profile_id = $2`, id, pid)
+	return err
+}