feat: expand admin and data sync workflows

apps/api/src/billing/billing.service.ts

@@ -112,6 +112,26 @@ function dec(v: Prisma.Decimal | null | undefined): string {
  */
 const NOT_VOIDED: Prisma.TransactionWhereInput = { voidedAt: null };
 
+/**
+ * Source tables excluded from the customer-facing statement.
+ *
+ * The legacy portal's `datosfreak` table was materialized from DATOS2 only
+ * (`objects.json:1358`), so the customer's "current balance" never saw
+ * EFECTIVO / EFECTIVO FM3 / CHEQUE FM3 / EFECTIVO_BACKUP cash receipts, nor
+ * the IVA 2015 snapshot. The unified `transactions` table has all of them, so
+ * the statement must drop them to match the legacy number the customer has
+ * been quoted for years. The staff-facing balances worklist and movement
+ * browser keep them — they're real money, just tracked separately
+ * (FM3 = visa fee stream, EFECTIVO = cash receipt stream).
+ */
+const STATEMENT_EXCLUDED_SOURCE_TABLES: readonly string[] = [
+  "EFECTIVO",
+  "EFECTIVO_BACKUP",
+  "EFECTIVO FM3",
+  "CHEQUE FM3",
+  "IVA 2015",
+];
+
 @Injectable()
 export class BillingService {
   constructor(private readonly prisma: PrismaService) {}
@@ -579,7 +599,10 @@ export class BillingService {
     }
 
     const rows = await this.prisma.transaction.findMany({
-      where: { customerId },
+      where: {
+        customerId,
+        legacySourceTable: { notIn: STATEMENT_EXCLUDED_SOURCE_TABLES as string[] },
+      },
       orderBy: [{ transactionDate: "asc" }, { id: "asc" }],
       select: {
         id: true,