fix(sat, payments, admin): multiple production fixes

- sat sweep-stale-jobs: increase initial/custom sync threshold 8h→24h to prevent watchdog killing long historical syncs
- sat-client: fix formatDateForSat same-day rejection by auto-adjusting fechaFin
- sat-sync job: check fiel_contribuyente in addition to fiel_credentials for cron eligibility
- database: extend pool idle cleanup from 5min to 12h to prevent pool closure during long syncs
- webhook controller: auto-extend currentPeriodEnd on recurring MercadoPago payments
- invoicing service: auto-send FacturAPI invoice by email after creation
- admin-clientes: fix no-renovaciones detection to include expired trials and deleted subscriptions

apps/api/src/config/database.ts

@@ -187,11 +187,13 @@ class TenantConnectionManager {
   }
 
   /**
-   * Remove idle pools (not accessed in last 5 minutes).
+   * Remove idle pools (not accessed in last 12 hours).
+   * SAT syncs (initial/daily) can run for hours in background;
+   * a 5-minute timeout caused 'pool already ended' errors mid-sync.
    */
   private cleanupIdlePools(): void {
     const now = Date.now();
-    const maxIdle = 5 * 60 * 1000;
+    const maxIdle = 12 * 60 * 60 * 1000;
 
     for (const [tenantId, entry] of this.pools.entries()) {
       if (now - entry.lastAccess.getTime() > maxIdle) {